Seals and methods of making and using the same

Abstract

A seal includes: an annular jacket including a body including a first lip and a second lip defining an annular recess, the first lip including an arcuate outer portion, the second lip including a rectilinear outer portion and a rectilinear tapered edge; and an annular energizer disposed within the annular recess adjacent to at least one of the first lip and the second lip.

Description

Technical Field

[0001] The present disclosure relates to seals, and more particularly to annular seals, or seals adapted to be placed under pressure conditions. Background Art

[0002] Seals are used in environments where fluids (liquids, gases, slurries, etc.) are separated from each other. Typically, these seals may include an energizer. Typically, these seals must show minimal leakage under strict pressure requirements over a wide temperature range. Typically, seal wear and leakage issues occur during cycles of low to high fluid pressures in applications such as, but not limited to, UHPLC and HPLC pumps. Therefore, the industry continues to require improved seals that can withstand a wider range of pressure and temperature conditions while maintaining operational effectiveness over time. Summary of the invention

[0003] Embodiments herein may include a seal comprising: an annular jacket including a body including a first lip and a second lip defining an annular recess, the first lip including an arcuate outer portion, the second lip including a linear outer portion and a linear tapered edge; and an annular energizer disposed within the annular recess adjacent to at least one of the first lip and the second lip.

[0004] Embodiments herein may include a seal assembly comprising: a first member; a second member; and a seal disposed between the first member and the second member, the seal comprising: an annular jacket comprising a body including a first lip and a second lip defining an annular recess, the second lip comprising a linear tapered edge; and an annular energizer disposed within the annular recess, wherein the second lip contacts at least one of the first member or the second member at greater than 0.1% of a surface area of ​​the second lip.

[0005] Embodiments herein may include a seal assembly comprising: a first member; a second member; and a seal disposed between the first member and the second member, the seal comprising: an annular jacket comprising a body comprising a first lip and a second lip defining an annular recess, the second lip comprising a linear tapered edge; and an annular energizer disposed within the annular recess, wherein a pressure applied to a surface area of ​​the second lip is less than 250 MPa. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The embodiments are shown by way of example and are not intended to be limited to the accompanying drawings.

[0007] Figure 1Included is a cross-sectional perspective view of a seal according to one embodiment.

[0008] Figure 2A Included is a cross-sectional perspective view of a sealing pre-assembly according to one embodiment.

[0009] Figure 2B Included is a cross-sectional perspective view of a seal assembly according to one embodiment.

[0010] Technicians should understand that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size of some elements in the elements in the drawings may be enlarged relative to other elements to help improve understanding of embodiments of the present invention. DETAILED DESCRIPTION

[0011] The following description in conjunction with the accompanying drawings is provided to help understand the teachings disclosed herein. The following discussion will focus on the specific implementation and implementation scheme of the teachings. This focus is provided to help describe the teachings and should not be interpreted as limiting the scope or applicability of the teachings. However, based on the teachings disclosed in the present application, other embodiments may be used.

[0012] The terms "comprises," "including," "having," or any other variation thereof, are intended to cover non-exclusive inclusions. For example, a method, article, or device that includes a list of features is not necessarily limited to only those features, but may include other features not expressly listed or inherent to such method, article, or device. In addition, unless expressly stated to the contrary, "or" refers to an inclusive or, not an exclusive or. For example, a condition A or B is satisfied by any of the following: A is true (or exists) and B is false (or does not exist), A is false (or does not exist) and B is true (or exists), and both A and B are true (or exist).

[0013] In addition, "a" or "an" is used to describe the elements and components described herein. This is done only for convenience and to give a general sense of the scope of the invention. The description should be understood to include one, at least one, or the singular, as well as the plural, or vice versa, unless it is clearly indicated that it has another meaning. For example, when a single item is described in this article, more than one item can be used to replace the single item. Similarly, in the case of more than one item described in this article, a single item can replace the more than one item.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. The materials, methods, and examples are exemplary only and are not intended to be limiting. To the extent not described herein, many details about specific materials and processing actions are conventional and can be found in textbooks and other sources within the sealing field.

[0015] Figure 1 A cross-sectional perspective view of a seal according to various embodiments is shown. Figure 1 , a seal 100 according to some embodiments described herein may generally include a jacket 102 and an energizer 108. The jacket 102 may include a body 104 having a heel 116, a first lip 112, and a second lip 114. In one embodiment, the body 104 may include an inner sidewall 105 that may define an annular recess 106. In various embodiments, the energizer 108 may be disposed within the annular recess 106.

[0016] Under load conditions, the energizer 108 may deform in a radial direction within the axial width of the seal 100 so as to contact or even push against the lips 112, 114 of the jacket 102. Thus, the lips 112, 114 may provide an outward force against adjacent components (e.g., the first and second components, respectively) within the assembly. At the same time, the lips 112 and 114 compressed between the first and second components may bias the energizer 108 in a direction transverse to the axial width of the seal 100, thereby generally generating four biasing force directions, two inward axial forces and two opposite outward axial forces. The forces provided by the energizer 108 on the lips 112, 114 may be different from the forces provided by the first or second components. Note that in certain applications, the described biasing forces may indirectly load against the energizer 108. Additionally, the energizer 108 may operate over a wider temperature and pressure range than conventional energizers.

[0017] The seal 100 (including at least one of the jacket 102 or the energizer 108) can be formed of any suitable material in the sealing field. In a specific embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) can at least partially include a polymer. The polymer can be selected from the group including the following items: polyketone, polyaramide, polyphenylene sulfide, polyethersulfone, polyphenylsulfone, polyamideimide, ultra-high molecular weight polyethylene, fluoropolymer, polybenzimidazole, polyacetal, polybutylene terephthalate (PBT), polypropylene (PP), polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), polyethylene terephthalate (PET), polyimide (PI), polyetherimide, polyetheretherketone (PEEK), polyethylene (PE), polysulfone, polyamide (PA), polyphenylene oxide, polyphenylene sulfide (PPS), polyurethane, polyester, liquid crystal polymer (LCP), elastomer, or any combination thereof. The polymer may be a thermoplastic or thermosetting polymer. In one embodiment, the jacket 102 may include a fluoropolymer, or even substantially consist of a fluoropolymer. Exemplary fluoropolymers include polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), polyimide (PI), polyamideimide (PAI), fluorinated ethylene propylene (FEP), polyvinylidene fluoride (PVDF), perfluoroalkoxy (PFA), tetrafluoroethylene and hexafluoropropylene and vinylidene fluoride terpolymer (THV), polychlorotrifluoroethylene (PCTFE), ethylene tetrafluoroethylene copolymer (ETFE), ethylene chlorotrifluoroethylene copolymer (ECTFE), or any combination thereof. Other fluoropolymers, polymers, and blends may be included in the composition of the jacket 102. In another specific embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) may at least partially include polyethylene (PE) such as ultra-high molecular weight polyethylene (UHMWPE), or even substantially consist of it. In another specific embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) may include a thermoplastic elastomeric hydrocarbon block copolymer, a polyether-ester block copolymer, a thermoplastic polyamide elastomer, a thermoplastic polyurethane elastomer, a thermoplastic polyolefin elastomer, a thermoplastic vulcanizate, an olefin-based copolymer, an olefin-based terpolymer, a polyolefin plastomer, or a combination thereof. In one embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) may include a styrene-based block copolymer, such as styrene-butadiene, styrene-isoprene, blends or mixtures thereof, and the like.Exemplary styrenic thermoplastic elastomers include triblock styrenic block copolymers (SBCs), such as styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS), styrene-ethylene butylene-styrene (SEBS), styrene-ethylene propylene-styrene (SEPS), styrene-ethylene-ethylene-butadiene-styrene (SEEBS), styrene-ethylene-ethylene-propylene-styrene (SEEPS), styrene-isoprene-butadiene-styrene (SIBS), or combinations thereof. Commercial examples include some grades of Kraton. TM and Hybrar TM In one embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) may include an elastomer including acrylonitrile-butadiene (NBR) carboxylated nitrile (XNBR) ethylene acrylate (AEM, ), ethylene propylene rubber (EPR, EPDM), butyl rubber (IIR), chloroprene rubber (CR), fluorocarbon (FKM, FPM), fluorosilicone (FVMQ), hydrogenated nitrile (HNBR), perfluoroelastomer (FFKM), polyacrylate (ACM), polyurethane (AU, EU), silicone rubber (Q, MQ, VMQ, PVMQ), tetrafluoroethylene-propylene At least one of (FEPM).

[0018] In one embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) can be treated, impregnated, filled, or coated with a lubricating material. Exemplary lubricating materials include molybdenum disulfide, tungsten disulfide, graphite, graphene, expanded graphite, boron nitride, talc, calcium fluoride, or any combination thereof. Additionally, the lubricating material can include aluminum oxide, silicon dioxide, titanium dioxide, calcium fluoride, boron nitride, mica, wollastonite, silicon carbide, silicon nitride, zirconium oxide, carbon black, pigments, or any combination thereof.

[0019] In one embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) may at least partially comprise a metal. According to certain embodiments, the metal may include iron, copper, titanium, tin, aluminum, alloys thereof, or may be another type of metal. In one embodiment, the seal 100 (including at least one of the jacket 102 or the energizer 108) may comprise a metal such as aluminum, zinc, copper, magnesium, tin, platinum, titanium, tungsten, iron, bronze, steel, energizer steel, stainless steel, a metal alloy (including the listed metals), anodized metal (including the listed metals), or any combination thereof.

[0020] As described above, the seal 100 may include a jacket 102. The jacket 102 may include a plurality of lips 112, 114 defining an annular recess 106. In one specific example, the lips 112 and 114 may extend from a heel 116 of the body 104. In one specific embodiment, the lips 112 and 114 may extend from the heel 116 relative to each other in substantially the same direction. In one embodiment, the first lip 112 may be located radially inward of the second lip 114 (e.g., the second lip 114 forms an outer diameter of the seal 100). In another specific embodiment, the lips 112 and 114 may extend parallel to each other. In an optional embodiment, either or both of the lips 112 and 114 may include a turned lip (not shown) adapted to provide a scraper interface for sealing abrasive or sticky materials or environmental components such as dust, debris, and environmental fluids. In one particular embodiment, the heel 116 may be secured to hardware (eg, a valve housing or a shaft) to prevent the seal 100 from rotating relative to the hardware within the assembly.

[0021] In one embodiment, the heel 116 of the jacket 102 can be substantially straight or planar. That is, the heel 116 can be placed substantially along a plane with minimal surface undulations and deviations. In a more specific embodiment, the heel 116 of the jacket 102 can be planar. As described in more detail below, the planar or substantially planar heel 116 of the jacket 102 can facilitate improved contact between adjacent seals, thereby providing better sealing properties. In one embodiment, the heel 116 may include an elongated heel portion 116a. In multiple embodiments, the elongated heel portion 116a may have a straight or polygonal cross section. In multiple embodiments, the elongated heel portion 116a may have an arcuate cross section. In multiple embodiments, the elongated heel portion 116a may be oriented substantially perpendicular to at least one of the first lip 112 or the second lip 114 along the central axis 1000. In multiple embodiments, the elongated heel portion 116a may have a straight end portion 116b. In various embodiments, the elongated heel portion 116a may have a straight end portion 116b that forms three, four, five, six, seven or even more polygonal sides. In various embodiments, the elongated heel portion 116a may have an arcuate end portion 116b. The heel 116 may include a heel head portion 116c extending along the central axis 1000. The heel head portion 116c may extend parallel to the central axis 1000. In various embodiments, the heel head portion 116c may have a straight or polygonal cross section. In various embodiments, the heel head portion 116c may form three, four, five, six, seven or even more polygonal sides. In various embodiments, the heel head portion 116c may have an arcuate cross section. In various embodiments, the heel head portion 116c may have a straight or polygonal portion adjacent to the first lip 112. In various embodiments, the heel head portion 116c may have an arcuate portion adjacent to the second lip 114.

[0022] In one embodiment, at least one of the lips 112 and 114 can be a generally planar profile extending from the heel 116. In one embodiment, at least one of the lips 112 and 114 can include a protrusion extending outwardly from the corresponding lip 112 or 114 in a direction away from the annular recess 106, thereby creating an arcuate shape. The protrusion can extend around the entire circumference of the seal 100. Similar to the machined lip described above, the protrusion can prevent the ingress or egress of material while exhibiting lower frictional resistance. In another embodiment, one of the lips 112 or 114 can include a machined lip and the other lip 112 or 114 can include a protrusion. In one embodiment, at least one of the lips 112 and 114 can include a straight line or a planar shape. As Figure 1As shown, in one embodiment, the first lip 112 may include a protrusion extending outward from the lip 112 in a direction away from the annular recess 106, thereby creating an arcuate shape and an outer portion 112a that may be partially or completely arcuate. The first lip 112 may also include an arcuate inner portion 112b facing the recess. Figure 1 As shown, in one embodiment, the second lip 114 may include a straight outer portion 114a, which may be partially or completely straight. The straight outer portion 114a may be planar and extend over the entire length of the second lip 114. The straight outer portion 114a may be parallel to the central axis 1000 of the seal 100. The second lip 114 may also include an arcuate inner portion 114b toward the recess.

[0023] As shown, the lips 112 and 114 of the jacket 102 may be curved outwardly after the energizer 108 is installed. After the energizer 108 is installed, at least one of the lips 112 and 114 may be at least partially curved when viewed in cross-section, biased outwardly by a biasing force provided by the energizer 108. After the energizer 108 is installed, at least one of the lips 112 and 114 may be straight or planar when viewed in cross-section, biased outwardly by a biasing force provided by the energizer 108 or an adjacent component. Figure 1 As shown, the first lip 112 may include an arcuate profile (e.g., an arcuate inner portion) along its inner portion 112b (facing the recess 106) and an arcuate profile 112a (e.g., an arcuate outer portion) along its outer portion (facing the adjacent component). Figure 1 As shown, the second lip 114 may include an arcuate profile (e.g., an arcuate inner portion) along its inner portion 114b (facing the recess 106) and a plane, straight or flat profile (e.g., a straight outer portion) along its outer portion 114a (facing the adjacent component). In various embodiments, the entire inner portion of the first lip 112 or the second lip 114 may be arcuate.

[0024] In one embodiment, the outer portion of the first lip 112 may have a radius of curvature R FE In various embodiments, the outer portion of the first lip 112 can have a radius of curvature R which can be positive. FE In various embodiments, the outer portion of the first lip 112 may have a radius of curvature R FE , the radius of curvature may be greater than 0.1, such as greater than 0.5, such as greater than 1, such as greater than 2, such as greater than 5, such as greater than 10, such as greater than 20, such as greater than 25, such as greater than 50, such as greater than 100, or such as greater than 200. In various embodiments, the outer portion of the first lip 112 may have a radius of curvature R which may be negative. FEIn various embodiments, the outer portion of the first lip 112 may have a radius of curvature R FE , the radius of curvature may be less than -0.1, such as less than -0.5, such as less than -1, such as less than -2, such as less than -5, such as less than -10, such as less than -20, such as less than -25, such as less than -50, such as less than -100 or such as less than -200. It should also be understood that the outer portion of the first lip 112 may have a radius of curvature R FE , the radius of curvature may be any value between any of the above minimum and maximum values. It is also understood that the outer portion of the first lip 112 may have a radius of curvature R FE , the radius of curvature can vary along its circumference and length.

[0025] In one embodiment, the inner portion of the first lip 112 may have a radius of curvature R FI In various embodiments, the inner portion of the first lip 112 can have a radius of curvature R which can be positive. FI In various embodiments, the inner portion of the first lip 112 may have a radius of curvature R FI , the radius of curvature may be greater than 0.1, such as greater than 0.5, such as greater than 1, such as greater than 2, such as greater than 5, such as greater than 10, such as greater than 20, such as greater than 25, such as greater than 50, such as greater than 100, or such as greater than 200. In various embodiments, the inner portion of the first lip 112 may have a radius of curvature R which may be negative. FI In various embodiments, the inner portion of the first lip 112 may have a radius of curvature R FI , the radius of curvature may be less than -0.1, such as less than -0.5, such as less than -1, such as less than -2, such as less than -5, such as less than -10, such as less than -20, such as less than -25, such as less than -50, such as less than -100 or such as less than -200. It should also be understood that the inner portion of the first lip 112 may have a radius of curvature R FI , the radius of curvature can be any value between any of the above minimum and maximum values. It is also understood that the inner portion of the first lip 112 can have a radius of curvature R FI , the radius of curvature can vary along its circumference and length.

[0026] In one embodiment, the seal 100 can have a radius of curvature R of the outer portion of the first lip 112 of at least 1:1, such as 2:1, such as 3:1, such as 4:1, such as 5:1, such as 10:1, such as 12:1, such as 15:1, such as 25:1, or such as 50:1. FE The curvature radius R of the inner portion of the first lip 112 is FI The ratio (RFE :R FI It should also be understood that the radius of curvature R of the outer portion of the first lip 112 is FE The curvature radius R of the inner portion of the first lip 112 is FI The ratio (R FE :R FI ) can be any value between any of the above minimum and maximum values. It can also be understood that the radius of curvature R of the outer portion of the first lip edge 112 is FE The curvature radius R of the inner portion of the first lip 112 is FI The ratio (R FE :R FI ) may vary along its circumference and length.

[0027] In one embodiment, at least one of the first lip 112 or the second lip 114 may include an inwardly directed extension. In some embodiments, the extension may be arcuate when viewed in cross section. In some embodiments, the extension may be linear or planar when viewed in cross section. The extension may include an edge on the inner side of the extension within the annular recess 106. In one embodiment, at least one of the first lip 112 or the second lip 114 may include edges 112c, 114c. The edges 112c, 114c of at least one of the first lip 112 or the second lip 114 may be linear. In multiple embodiments, the edges 112c, 114c of at least one of the first lip 112 or the second lip 114 may be linear, thereby forming three, four, five, six, seven, or even more polygonal sides. As Figure 1 As shown, the first lip 112 may include two arcuate sides and at least one or two straight sides forming an edge 112c. Figure 1 As shown, the second lip 114 may include three straight sides forming an edge 114c. The edge 112c, 114c of at least one of the first lip 112 or the second lip 114 may be arcuate. The edge 112c, 114c of at least one of the first lip 112 or the second lip 114 may be perpendicular to the central axis 1000, such as Figure 1 The edge 112c of the first lip 112 is best shown in FIG. The edge 112c, 114c of at least one of the first lip 112 or the second lip 114 may be tapered relative to the central axis 1000, such as Figure 1 The edge 114c of the second lip 114 is best shown. Figure 1As shown, the edge 114c of the second lip 114 can be tapered relative to the central axis 1000 at α, wherein α is less than 90°, such as less than 75°, such as less than 60°, such as less than 45°, or such as less than 30°. In one embodiment, the edge 112c of the first lip 112 can form a similar angle (not shown). In one embodiment, the edge 112c, 114c of at least one of the first lip 112 or the second lip 114 can have an inner portion 112b, 114b that is at least partially parallel to the central axis 1000.

[0028] In one embodiment, the jacket 102 can have a length L of at least 0.1 mm, at least 0.5 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. J The jacket 102 may have a length L that may be no greater than 1500 mm or no greater than 1000 mm. J In various embodiments, the jacket 102 can have a length L between 0.5 mm and 10 mm. J It should also be understood that the jacket 102 may have a length L that may be any value between any of the minimum and maximum values ​​noted above. J It is also understood that the jacket 102 may have a length L that may vary along its circumference. J In various embodiments, the jacket 102 can have an overall length L that can be comparable to the seal 100 itself. S Same length L J .

[0029] In one embodiment, the jacket 102 can have a width W of at least 0.1 mm, at least 0.5 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. J The jacket 102 may have a width W that may be no greater than 1500 mm or no greater than 1000 mm. J In various embodiments, the jacket 102 can have a width W between 0.5 mm and 40 mm. J It should also be understood that the jacket 102 may have a width W that may be any value between any of the minimum and maximum values ​​noted above. J It is also understood that the jacket 102 may have a width W that may vary along its circumference. J In various embodiments, the jacket 102 may have an overall width W that is comparable to the seal 100 itself. S Same width W J .

[0030] In one embodiment, the first lip 112 may have a length L of at least 0.1 mm, at least 0.3 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. FL The first lip 112 may have a length L which may be no greater than 1500 mm or no greater than 1000 mm. FL In various embodiments, the first lip 112 can have a length L between 0.3 mm and 10 mm. FL It should also be understood that the first lip 112 can have a length L that can be any value between any of the minimum and maximum values ​​noted above. FL It is also understood that the first lip 112 may have a length L that may vary along its circumference. FL .

[0031] In one embodiment, the first lip 112 may have a thickness W of at least 0.01 mm, at least 0.1 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. FL The first lip 112 may have a thickness W of not more than 1500 mm and not more than 1000 mm. FL In various embodiments, the first lip 112 can have a thickness W between 0.1 mm and 1 mm. FL It should also be understood that the first lip 112 can have a thickness W that can be any value between any of the minimum and maximum values ​​noted above. FL It is also understood that the first lip 112 may have a thickness W that may vary along its circumference. FL .

[0032] In one embodiment, the first lip 112 may have a length L of at least 2:1, such as 3:1, such as 4:1, such as 5:1, such as 10:1, such as 12:1, such as 15:1, such as 25:1, or such as 50:1. FL With thickness W FL It should also be understood that the first lip 112 may have a length L that may be any value between any of the minimum and maximum values ​​noted above. FL With thickness W FL It is also understood that the first lip 112 may have a length L that can vary along its circumference. FL With thickness W FL ratio.

[0033] In one embodiment, the second lip 114 may have a length L of at least 0.1 mm, at least 0.3 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. SL The second lip 114 may have a length L which may be no greater than 1500 mm or no greater than 1000 mm. SL In various embodiments, the second lip 114 can have a length L between 0.3 mm and 10 mm. SL It should also be understood that the second lip 114 can have a length L that can be any value between any of the minimum and maximum values ​​noted above. SL It is also understood that the second lip 114 may have a length L that may vary along its circumference. SL .

[0034] In one embodiment, the second lip 114 may have a thickness W of at least 0.01 mm, at least 0.1 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. SL The second lip 114 may have a thickness W that may be no greater than 1500 mm or no greater than 1000 mm. SL In various embodiments, the second lip 114 can have a thickness W between 0.1 mm and 1 mm. SL It should also be understood that the second lip 114 can have a thickness W that can be any value between any of the minimum and maximum values ​​noted above. SL It is also understood that the second lip 114 may have a thickness W that may vary along its circumference. SL .

[0035] In one embodiment, the second lip 114 may have a length L of at least 2:1, such as 3:1, such as 4:1, such as 5:1, such as 10:1, such as 12:1, such as 15:1, such as 25:1, or such as 50:1. SL With thickness W SL It should also be understood that the second lip 114 may have a length L that may be any value between any of the minimum and maximum values ​​noted above. SL With thickness W SL It is also understood that the second lip 114 may have a length L that can vary along its circumference. SL With thickness W SL In various embodiments, Figure 1 As shown, the thickness of the two lips 112, 114 may be different.

[0036] In one embodiment, the heel 116 may have a length L of at least 0.1 mm, at least 0.2 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. H The heel portion 116 may have a length L that may be no greater than 1500 mm or no greater than 1000 mm. H In various embodiments, the heel 116 can have a length L between 0.2 mm and 10 mm. H It should also be understood that the heel 116 may have a length L that may be any value between any of the minimum and maximum values ​​noted above. H It is also understood that the heel portion 116 may have a length L that may vary along its circumference. H .

[0037] In one embodiment, the heel 116 may have a thickness W of at least 0.1 mm, at least 0.5 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. H The heel portion 116 may have a thickness W that may be no greater than 1500 mm or no greater than 1000 mm. H In various embodiments, the heel portion 116 can have a thickness W between 0.5 mm and 40 mm. H It should also be understood that the heel portion 116 may have a thickness W that may be any value between any of the minimum and maximum values ​​noted above. H It is also understood that the heel portion 116 may have a thickness W that may vary along its circumference. H .

[0038] like Figure 1 As shown, the energizer 108 can be at least partially disposed within the annular recess 106 of the jacket 102. The energizer 108 can be an axially oriented energizer in the annular recess 106 of the jacket 102. In one embodiment, the energizer 108 can be disposed along, adjacent to, or directly adjacent to the first lip 112. In one embodiment, the energizer 108 can be disposed along, adjacent to, or directly adjacent to the second lip 114.

[0039] In one embodiment, if Figure 1As shown, the energizer 108 may be a coil spring oriented circumferentially within the recess 106 of the jacket 102. The coil spring energizer 108 may have a straight, polygonal, oval, or arcuate cross-sectional profile. In one embodiment, the energizer 108 may have a diameter that is less than 150% of the depth of the annular recess 106, such as less than 100% of the depth of the annular recess 106, or even less than 75% of the depth of the annular recess 106. In one embodiment, the diameter of the energizer 108 may be no less than 10% of the depth of the annular recess 106.

[0040] In one embodiment, the energizer 108 may have a length L of at least 0.1 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. S The energizer 108 may have a length L that may be no greater than 1500 mm or no greater than 1000 mm. S In various embodiments, the energizer 108 may have a length L between 0.3 mm and 6 mm. S It should also be appreciated that the energizer 108 may have a length L that may be any value between any of the minimum and maximum values ​​noted above. S It is also understood that the energizer 108 may have a length L that may vary along its circumference. S .

[0041] In one embodiment, the energizer 108 may have a thickness W of at least 0.1 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm. S The energizer 108 may have a thickness W that may be no greater than 1500 mm or no greater than 1000 mm. S In various embodiments, the energizer 108 may have a thickness W between 0.3 mm and 6 mm. S It should also be understood that the energizer 108 may have a thickness W that may be any value between any of the minimum and maximum values ​​noted above. S It is also understood that the energizer 108 may have a thickness W that may vary along its circumference. S .

[0042] The energizer 108 may be curved when viewed in cross section. In some embodiments, the energizer 108 may be straight or flat when viewed in cross section. Figure 1As shown, the energizer 108 may contact at least one of the lips 112, 114 of the jacket 102. In one embodiment, the energizer 108 may contact substantially the entirety of at least one of the lips 112, 114 in the axial direction. In one embodiment, the energizer 108 may contact at least one of the lips 112, 114 of the jacket 102. In one embodiment, the energizer 108 may contact substantially the entirety of at least one of the lips 112, 114 of the jacket 102.

[0043] As contemplated in at least one embodiment described herein, the energizer 108 may include a length of material formed into a spiral energizer having a plurality of coils. In one embodiment, the energizer 108 may include at least 2 coils, such as at least 3 coils, at least 4 coils, at least 5 coils, at least 10 coils, at least 100 coils, at least 200 coils, at least 300 coils, at least 400 coils, at least 500 coils, or even at least 1000 coils. The length of material forming the energizer 108 may have a polygonal or elliptical cross-section. For example, in one embodiment, the energizer 108 may be formed from a circular wire. In another embodiment, the energizer 108 may be formed from a strip of material wound into a plurality of coils. The coils of the energizer 108 may be adjacent to each other or even partially overlap. In a specific example, the coils may be parallel to each other. In another case, the coils may be tilted relative to each other. That is, the coils may be angularly offset and angled relative to each other.

[0044] In a relaxed state, the energizer 108 may have a generally rounded cross-section. That is, as described above, the energizer 108 may be a spiral energizer. In other embodiments, the energizer 108 may define a generally polygonal cross-sectional profile. In a more specific embodiment, the energizer 108 may have a generally T-shaped cross-sectional profile. In another embodiment, the energizer 108 may have an elliptical cross-sectional profile. For example, in an embodiment not shown, the energizer 108 may have an oval or circular cross-sectional profile. In yet another embodiment, the cross-section of the energizer 108 may be partially elliptical and partially polygonal. That is, the cross-section of the energizer 108 may have a linear portion and an arcuate portion. The cross-section of the wire forming the coil of the energizer 108 may be rectangular, square, circular, elliptical, or trapezoidal. The wire forming the coil of the spring 108 may be between 0.025 mm and 25.4 mm, such as a pitch rotation between 0.1 mm and 3 mm. The wire forming the coil of spring 108 may have a wire diameter between 0.025 mm and 25.4 mm, such as between 0.05 mm and 0.6 mm. The wire forming the coil of spring 108 may have a spring diameter between 0.05 mm and 1500 mm, such as between 0.5 mm and 20 mm.

[0045] In one embodiment, the energizer 108 may extend around the entire circumference of the seal 100. In a more specific embodiment, the energizer 108 may have a uniform shape and material properties around the entire circumference of the seal 100. In another more specific embodiment, the energizer 108 may have a varying shape or material selection around the circumference of the seal 100. In another embodiment, the energizer 108 may extend around only a portion of the circumference of the seal 100. In a more specific embodiment, the energizer 108 may include a plurality of energizers 108 that are at least partially spaced apart from one another. In such an embodiment, there may be a circumferential space between adjacent energizers 108.

[0046] The energizer 108 may at least partially comprise, or even consist essentially of, a metal, such as steel, or even more specifically energizer steel. The metal may be coated or surface treated to prevent corrosion or another undesirable effect from environmental exposure. In another embodiment, the energizer 108 may at least partially comprise, or even consist essentially of, for example, Eligloy, Inconel, Hastelloy, or a combination thereof.

[0047] In yet another embodiment, the energizer 108 may include cobalt, chromium, nickel, iron, molybdenum, manganese, beryllium, copper, or a combination thereof. In a specific embodiment, the energizer 108 may include at least 10 wt % cobalt, such as at least 20 wt % cobalt, at least 25 wt % cobalt, at least 30 wt % cobalt, at least 35 wt % cobalt, or even at least 40 wt % cobalt. The energizer 108 may have a yield strength of less than 1200 MPa, such as less than 1100 MPa, less than 1000 MPa, or even less than 900 MPa. In specific cases, the energizer 108 may be heat treated or surface treated to enhance its properties.

[0048] The energizer 108 may provide a biasing force against the jacket 102. Specifically, the energizer 108 may contact at least one of the first lip 112 or the second lip 114 and provide an outward biasing force F against it. E In one embodiment, the biasing force F of the energizer 108 against the lips 112, 114 E It may be at least 0.001 N / mm, such as at least 0.01 N / mm or such as at least 0.3 N / mm. In another embodiment, the biasing force F E The biasing force F against the first lip 112 may be less than 5000 N / mm, less than 1000 N / mm, less than 500 N / mm, less than 400 N / mm, less than 300 N / mm, less than 200 N / mm, less than 100 N / mm, less than 50 N / mm, less than 20 N / mm, or even less than 10 N / mm.E The biasing force F against the second lip 114 may be different from E .

[0049] Figure 2A Included is a cross-sectional perspective view of a sealing pre-assembly according to one embodiment. Figure 2B Included is a cross-sectional perspective view of a sealing assembly according to one embodiment. FIG. 2A to FIG. 2B The seal 200 is shown in an axial orientation, but the seal 200 can be oriented in any possible orientation, including a radial or face seal orientation. Figure 1 Same parts as listed. Figure 2A As shown, the seal 200 can be placed downwardly along the central axis 1000 between the first member 202 and the second member 204 within the seal assembly 2000. The first member 202 can be a housing. The second member 204 can be a shaft. At least one of the first member 202 or the second member 204 can be actuated relative to the seal 200 or at least one of the other of the first member 202 or the second member 204. The actuation can be rotational, radial, or axial movement. The components of the seal 200 of FIG. 2 can be the same as those described above. Figure 1 In one embodiment, within the sealing assembly, at least one of the first lip 212 or the second lip 214 can be static, while the other of the first lip 212 or the second lip 214 can be dynamic. In addition, the first member 202 can be made of a material having different material properties or mechanical properties (e.g., a different expansion coefficient than the second member 204, or vice versa).

[0050] In various embodiments, the seal 200 can be assembled within a seal assembly 2000 including a UHPLC or HPLC pump assembly. In these embodiments, the seal 200 can be small-sized, having a length between 0.5 mm and 5 mm and a width between 0.5 mm and 20 mm, according to the above ranges. In these embodiments, the first member 202 or the second member 204 can have a diameter of less than 2 mm, such as less than 1 mm, such as less than 0.5 mm. In addition, in these assemblies, the cycle pressure can be less than 250 MPa, such as less than 200 MPa, less than 150 MPa, or less than 100 MPa. In addition, as Figure 2A As shown, the first member 202 and the second member 204 may have a first configuration, and as shown in FIG. Figure 2B As shown, the first member 202 and the second member 204 can have a second configuration. As shown, the seal 200 can expand to fit within the members 202, 204 between the first configuration and the second configuration. In various embodiments, Figure 2BA second configuration may be shown which may illustrate seal deformation of seal 200 after 100 pumping cycles.

[0051] The seal 200 can provide a biasing contact force F against at least one of the first member 202 or the second member 204. S Specifically, the seal 200 may provide a biasing force F against at least one of the first member 202 or the second member 204. S In one particular embodiment, the seal 200 can provide a biasing force F against at least one of the first member 202 or the second member 204. S , the biasing force may be at least 0.001 N / mm, such as at least 0.01 N / mm. In another embodiment, the biasing force F S The seal 200 may be less than 5000 N / mm, such as less than 1000 N / mm, such as less than 500 N / mm, less than 400 N / mm, less than 300 N / mm, less than 200 N / mm, less than 100 N / mm, less than 50 N / mm, less than 25 N / mm, or even less than 10 N / mm. In various embodiments, the seal 200 may provide a biasing force F between 0.3 N / mm and 150 N / mm against at least one of the first member 202 or the second member 204. S In various embodiments, the biasing force F against the first member 202 S The biasing force F against the second member 204 may be different from Ss .

[0052] In one embodiment, the biasing force F of the energizer against at least one of the first lips E The biasing force F of the seal on at least one of the first component or the second component S The ratio of may be no greater than 1:1, such as 1:2, such as 1:3, such as 1:4, such as 1:5, such as 1:10, such as 1:12, such as 1:15, such as 1:25 or such as 1:50. It should also be understood that F E :F S The ratio of F can be any value between any of the above minimum and maximum values. It is also understood that F E :F S The ratio may vary along its circumference.

[0053] The seal 200 may have a contact area on at least one of the first member 202 or the second member 204. In a specific embodiment, the seal 200 may have a contact area of ​​at least 0.1% of the total area of ​​the seal 200 on at least one of the first member 202 or the second member 204. In another embodiment, the contact area on at least one of the first member 202 or the second member 204 is at least 0.1% of the total area of ​​the seal 200, such as at least 0.5%, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75%, or such as at least 80%.

[0054] The seal 200 may have a second lip 114 having a contact area on at least one of the first member 202 or the second member 204. In a specific embodiment, the second lip 114 may have a contact area on at least one of the first member 202 or the second member 204 of at least 0.1% of the total surface area of ​​the second lip 114. In another embodiment, the contact area of ​​the second lip 114 on at least one of the first member 202 or the second member 204 is at least 0.1% of the total surface area of ​​the second lip 114, such as at least 0.5% of the total surface area of ​​the second lip 114, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75%, or such as at least 80%. The seal 200 may have a first lip 112 having a contact area on at least one of the first member 202 or the second member 204. In a particular embodiment, the first lip 112 can have a contact area on at least one of the first member 202 or the second member 204 that is at least 0.1% of the total surface area of ​​the first lip 112 .

[0055] In another embodiment, the contact area of ​​the second lip 114 on at least one of the first member 202 or the second member 204 is at least 0.1% of the total surface area of ​​the first lip 112, such as at least 0.5% of the total surface area of ​​the first lip 112, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75%, or such as at least 80%.

[0056] Seal 100 can form an assembly that can be used in bidirectional pressure applications. Seal 100 can be oriented in the forward axial direction and prevent fluid leakage in the forward axial direction, or seal 100 can be oriented in the rearward axial direction and prevent fluid leakage downward along the central axis 1000 in the rearward axial direction. Seal 100 can be oriented in the inward direction and prevent fluid leakage in the inward direction, or seal 100 can be oriented in the outward direction and prevent fluid leakage in the outward direction along the direction perpendicular to the central axis 300. In this regard, seal 100 can be selected to have specific characteristics that allow effective sealing in those specific orientations. Particularly suitable applications include valves, pistons, two-way couplings, and other movable parts that need to be sealed therebetween. Particularly suitable applications can include UHPLC or HPLC pump components.

[0057] Seals described according to embodiments herein can allow components of the seal to have a longer life due to properly applied forces that reduce repeated compression and stress of individual components (e.g., energizers, jackets) due to vibration or actuation of the seal or other components within the assembly. In addition, seals described according to embodiments herein can prevent seal deformation under low and high cycle pressure cycles. Therefore, the life of the components and the seal itself can be improved, and overall leakage can be reduced.

[0058] Many different aspects and embodiments are possible. Some of those aspects and embodiments are described below. After reading this specification, the technician will understand that those aspects and embodiments are only exemplary and do not limit the scope of the present invention. Embodiments can be according to any one or more of the following listed projects.

[0059] Embodiment 1. A seal, comprising: an annular jacket, the annular jacket comprising a body, the body comprising an elongated heel, a first lip and a second lip defining an annular recess, the first lip comprising an arcuate outer portion, the second lip comprising a straight outer portion and a straight tapered edge; and an annular energizer, the annular energizer being disposed within the annular recess adjacent to at least one of the first lip and the second lip.

[0060] Embodiment 2. A sealing assembly, comprising: a first member; a second member; and a seal disposed between the first member and the second member, the seal comprising: an annular jacket comprising a body, the body comprising an elongated heel, a first lip and a second lip defining an annular recess, the second lip comprising a linear tapered edge; and an annular energizer disposed within the annular recess, wherein the second lip contacts at least one of the first member or the second member with a surface area greater than 0.1% of the second lip.

[0061] Embodiment 3. A sealing assembly, comprising: a first member; a second member; and a seal disposed between the first member and the second member, the seal comprising: an annular jacket comprising a body, the body comprising an elongated heel, a first lip and a second lip defining an annular recess; the second lip comprising a linear tapered edge; and an annular energizer disposed within the annular recess, wherein a pressure applied to a surface area of ​​the second lip is less than 250 MPa.

[0062] Embodiment 4. A seal or seal assembly according to any of the preceding embodiments, wherein the seal includes a slender heel portion that is oriented substantially perpendicular to at least one of the first lip edge or the second lip edge.

[0063] Embodiment 5. A seal or a seal assembly according to any of the preceding embodiments, wherein the entirety of the first lip comprises an arcuate outer portion.

[0064] Embodiment 6. A seal or a seal assembly according to any of the preceding embodiments, wherein the entirety of the second lip includes a straight outer portion.

[0065] Embodiment 7. A seal or seal assembly according to any of the preceding embodiments, wherein the energizer provides a radial biasing force between 0.3 N / mm and 20 N / mm against the first lip or the second lip.

[0066] Embodiment 8. A seal or seal assembly according to any of the preceding embodiments, wherein the seal provides a radial biasing force between 0.3 N / mm and 150 N / mm against the first member or the second member.

[0067] Embodiment 9. A seal or a sealing assembly according to any of the preceding embodiments, wherein the straight tapered edge of the second lip forms an angle α, wherein α is less than 90°, such as less than 75°, such as less than 60°, such as less than 45°, or such as less than 30°.

[0068] Embodiment 10. A seal or sealing assembly according to any of the preceding embodiments, wherein at least one of the first lip or the second lip is static within the sealing assembly.

[0069] Embodiment 11. A seal or sealing assembly according to any of the preceding embodiments, wherein at least one of the first lip or the second lip is dynamic within the sealing assembly.

[0070] Embodiment 12. A seal or sealing assembly according to any of the preceding embodiments, wherein the first lip includes an arcuate inner portion.

[0071] Embodiment 13. A seal or sealing assembly according to any of the preceding embodiments, wherein the second lip comprises an arcuate inner portion.

[0072] Embodiment 14. A seal or seal assembly according to any of the preceding embodiments, wherein the first lip is located radially inward of the second lip.

[0073] Embodiment 15. The seal or seal assembly of any of the preceding embodiments, wherein the energizer is a coil spring.

[0074] Embodiment 16. The seal or seal assembly of Embodiment 15, wherein the energizer rotates at a pitch between 0.1 mm and 3 mm.

[0075] Embodiment 17. The seal or seal assembly of Embodiment 15, wherein the energizer has a wire diameter between 0.05 mm and 0.6 mm.

[0076] Embodiment 18. The seal or seal assembly of Embodiment 15, wherein the energizer has an energizer diameter between 0.5 mm and 20 mm.

[0077] Embodiment 19. A seal or seal assembly according to any of the preceding embodiments, wherein the energizer has a wire with a rectangular, square or trapezoidal cross-section.

[0078] Embodiment 20. A seal or seal assembly according to any of the preceding embodiments, wherein the energizer comprises a wire of circular cross-section.

[0079] Embodiment 21. The seal or seal assembly of any of the preceding embodiments, wherein the energizer comprises a metal.

[0080] Embodiment 22. The seal or seal assembly of any of the preceding embodiments, wherein the energizer comprises a polymer.

[0081] Embodiment 23. A seal or sealing assembly according to any of the preceding embodiments, wherein the jacket comprises metal.

[0082] Embodiment 24. A seal or sealing assembly according to any of the preceding embodiments, wherein the jacket comprises a polymer.

[0083] Embodiment 25. A seal or sealing assembly according to Embodiment 4, wherein the slender heel forms a straight edge with the second lip.

[0084] Embodiment 26. A seal or a seal assembly according to Embodiment 4, wherein the elongated heel forms an arcuate edge with the second lip.

[0085] Embodiment 27. A seal or a seal assembly according to any one of the preceding embodiments, wherein the seal has a length L between 0.5 mm and 10 mm. S .

[0086] Embodiment 28. A seal or a seal assembly according to any one of the preceding embodiments, wherein the seal has a width W between 0.5 mm and 40 mm. S .

[0087] Embodiment 29. A seal or seal assembly according to any of the preceding embodiments, wherein the elongated heel has a width W between 0.5 mm and 40 mm. H .

[0088] Embodiment 30. A seal or sealing assembly according to any one of the preceding embodiments, wherein the first lip has a length L between 0.3 mm and 10 mm. FL .

[0089] Embodiment 31. A seal or sealing assembly according to any one of the preceding embodiments, wherein the first lip has a width W between 0.1 mm and 1 mm. FL .

[0090] Embodiment 32. A seal or sealing assembly according to any of the preceding embodiments, wherein the second lip has a length L between 0.3 mm and 10 mm. SL .

[0091] Embodiment 33. A seal or sealing assembly according to any of the preceding embodiments, wherein the second lip has a width W between 0.1 mm and 1 mm. SL .

[0092] Embodiment 34. A seal or a seal assembly according to any one of the preceding embodiments, wherein the first lip has a length L FL Variation of width W FL .

[0093] Embodiment 35. A seal or a seal assembly according to any one of the preceding embodiments, wherein the first lip has an outer radius of curvature R FE and the inner radius of curvature R FI , where R FE / R FI Greater than 1.

[0094] Embodiment 36. A seal or sealing assembly according to any of the preceding embodiments, wherein at least one of the first member or the second member has a diameter less than 2 mm.

[0095] Embodiment 37. A seal or sealing assembly according to any of the preceding embodiments, wherein the assembly is a UHPLC or HPLC pump assembly.

[0096] Embodiment 38. A seal or sealing assembly according to any of the preceding embodiments, wherein the assembly has a cycle pressure of less than 250 MPa.

[0097] Note that not all of the features described above are required, a portion of a particular feature may not be required, and one or more features other than those described may also be provided. Further, the order in which the features are described is not necessarily the order in which the features are installed.

[0098] For the sake of clarity, certain features described herein in the context of separate embodiments may also be provided in combination in a single embodiment. Conversely, various features described in the context of a single embodiment for the sake of brevity may also be provided separately or in any sub-combination.

[0099] Benefits, other advantages, and solutions to problems have been described above with respect to specific embodiments; however, the benefits, advantages, solutions to problems, and any features that may cause any benefit, advantage, or solution to occur or become more significant should not be construed as critical, required, or essential features of any or all the claims.

[0100] The description and illustration of the embodiments described herein are intended to provide a general understanding of the structure of various embodiments. Description and illustration are not intended to be used as a detailed and comprehensive description of all elements and features of the equipment and system using the structure or method described herein. Individual embodiments may also be provided in combination in a single embodiment, and on the contrary, the various features described in the context of a single embodiment for the sake of brevity may also be provided individually or in any sub-combination. In addition, reference to the values ​​described in the range includes each value within the range. Only after reading this specification, many other embodiments may be apparent to the technician. Other embodiments may be used and derived from the present disclosure, so that structural substitution, logical substitution or any change may be performed without departing from the scope of the present disclosure. Therefore, the present disclosure should be considered illustrative and not restrictive.

Claims

1. A seal, comprising: an annular jacket comprising a body including a first lip and a second lip defining an annular recess, the first lip including an arcuate outer portion, the second lip including a linear outer portion and a linear tapered edge; and An annular energizer is disposed within the annular recess adjacent to at least one of the first lip and the second lip.

2. A sealing assembly comprising: first component; The second component; and A sealing member, the sealing member is disposed between the first member and the second member, the sealing member comprising: an annular jacket comprising a body including a first lip and a second lip defining an annular recess, the second lip including a linear tapered edge; and An annular energizer is disposed within the annular recess, wherein the second lip contacts at least one of the first member or the second member at greater than 0.1% of a surface area of ​​the second lip.

3. A sealing assembly comprising: first component; The second component; and A sealing member, the sealing member is disposed between the first member and the second member, the sealing member comprising: an annular jacket comprising a body including a first lip and a second lip defining an annular recess, the second lip including a linear tapered edge; and An annular energizer is disposed within the annular recess, wherein a pressure exerted on a surface area of ​​the second lip is less than 250 MPa.

4. A seal or seal assembly according to any one of the preceding claims, wherein the seal comprises an elongated heel oriented substantially perpendicular to at least one of the first lip or the second lip.

5. A seal or seal assembly according to any one of the preceding claims, wherein the entirety of the first lip comprises an arcuate outer portion.

6. A seal or seal assembly according to any preceding claim, wherein the entirety of the second lip comprises a rectilinear outer portion.

7. A seal or seal assembly according to any one of the preceding claims, wherein the energizer provides a radial biasing force against the first lip or the second lip of between 0.3 N / mm and 20 N / mm.

8. A seal or seal assembly according to any one of the preceding claims, wherein the seal provides a radial biasing force against the first or second member of between 0.3 N / mm and 150 N / mm.

9. A seal or seal assembly according to any one of the preceding claims, wherein the linear tapered edge of the second lip forms an angle α, wherein α is less than 90°.

10. A seal or seal assembly according to any one of the preceding claims, wherein at least one of the first lip or the second lip is static within the seal assembly.

11. A seal or seal assembly according to any one of the preceding claims, wherein at least one of the first lip or the second lip is dynamic within the seal assembly.

12. A seal or seal assembly according to any one of the preceding claims, wherein the first lip comprises an arcuate inner portion.

13. A seal or seal assembly according to any one of the preceding claims, wherein the second lip comprises an arcuate inner portion.

14. A seal or seal assembly according to any one of the preceding claims, wherein the first lip is located radially inwardly of the second lip.

15. A seal or seal assembly according to any one of the preceding claims, wherein the jacket comprises a polymer.

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