Engine Seals TRIZ Cases

Magnets hold aft frame side seals across circumferential gaps, preserving alignment under heat and vibration to prevent combustion gas dilution.

Dual hooks on a support wall simplify attaching a shaft-hole seal to a panel while blocking foreign matter and sound through the gap.

An embedded fiber sheet stiffens resin seals for analyzer flow cells, preventing leakage, corrosion, and fluid contamination under high pressure.

Axial sealing webs and grooves form a labyrinth seal that limits wastegate spindle leakage while preserving thermal expansion clearance.

A stepped labyrinth clearance lets a spindle rotate while limiting fluid leakage, simplifying fluid unit mounting and replacement.

Stepped hydrodynamic grooves redirect gas flow to build pressure, keep piston rings separated, and reduce wear in intershaft seals.

A hydrostatic non-contact seal closes the stator-linkage gap to cut friction heat, ease assembly, and simplify replacement after incidental contact.

A sealed hanger-drive structure keeps the inner case closed while enabling uniform steam or hot-air treatment with lower vibration, noise, and garment damage.

Thin anti-slip protrusions on an elastic inner water stop member keep bolts from dropping off while preserving waterproof sealing and assembly ease.

An isolated secondary cavity supplies oil to hydraulic machine seals, preventing pressure-driven seizing and overheating without added axial size.

Additive-built cooling conduits around the piston rod improve heat transfer, simplify stuffing box manufacture, and reduce leakage points.

Additive manufacturing cuts rotating control seal cost while enabling reinforced elastomer geometry that resists drilling forces and wear.

Dynamic crosslinking balances fuel barrier performance with lower tensile elasticity in a thermoplastic fluororesin-fluoroelastomer blend.

A sliding coating and trough section let one hard seal ring design cut tooling cost while improving wear resistance and service life.

A notched dovetail groove and flexible graphite gasket improve seal retention under pressure reversals and resist extrusion.

A hydraulic rod seal and guide ring cut axial sealing force in decoking valves, reducing wear and extending repair intervals.

A deformable seal ring creates hydrodynamic lift and cooling flow to limit friction heat while maintaining sealing at high pressure and speed.

Elastic spacers lock onto the turbine frame pawl pin to stop mount link contact damage and avoid lost or forgotten wooden shims.

A retaining part built into the bearing assembly secures the bellow directly, shortening the slip stub while improving sealing and vibration resistance.

An integrated solid-shaft and female-tube structure with a hole cover blocks moisture ingress while preserving shaft travel and phase accuracy.

A sliding cap shields the seal from rough multi-port tube ends, then moves back so the seal can expand and prevent fluid leakage.

An elastic thermoplastic seal bridges toilet and ground drain pipes of different diameters while avoiding wax-ring temperature sensitivity.

Centrifugal force deforms the liner to seal against the closure member, removing separate seals and speeding filter servicing.

Radially balanced tabs and slots keep an aircraft engine seal carrier centered and resist rotation if the bellows spring decouples.

A two-stage rubber molding process forms seal members closer to flange-shaped base materials, reducing product size without enlarging the base area.

A differential-pressure valve lip built into the seal ring relieves trapped pressure, cutting friction and preventing seal damage.

Relief openings in segmented packing rings equalize pressure, reduce wear and extrusion, and maintain sealing in high-pressure piston compressors.

Specific seal-body and energizer ratios limit fluid intrusion behind the energizer, reducing back jetting damage and extending seal life.

A primer-coated metal sealing surface bonds polymer parts and a non-linear pull wire path simplifies assembly while preventing entrapment.

A self-locking bridge and connection-member structure secures gaskets on heat transfer plates without adhesive, reducing displacement and sealing risk.

A one-piece shaft sleeve and rotating seal element cuts seal size and leakage while maintaining reliable spring-loaded sealing in centrifugal pumps.

Offset deep and shallow grooves linked by a communication groove balance fluid film pressure, preventing cavitation at high rotation speeds.

A coated contact section and trough for a soft seal cut tooling cost while improving wear, heat dissipation, and sealing life.

Smaller molded sealing components join into a closed annular gasket for battery boxes, reducing tool size and cost while preserving sealing reliability.

A two-piece annular rotary seal forms a retained seal pocket, cutting assembly time and eliminating the bearing sleeve while handling misalignment.

Additive manufacturing with vulcanised thermoplastic elastomers creates variable-geometry aerodynamic seals for complex surfaces, cutting mould cost and weight.

Segmented gap supports shield the elastomer core in pipeline isolation seals, preventing creep across large extrusion gaps under high pressure.

Layer-by-layer elastomer deposition forms gaskets directly in enlarged or variable grooves, preserving sealing integrity after cleaning cycles.

Helical threads on a rotating collar create axial outflow that expels contaminants from bearing housings without close-fit wear or constant fluid supply.

A kammprofile gasket with C-ring ends and a core spring maintains sealing under flange flatness changes while reducing turbulence and structure cost.

A groove-mounted support element keeps the seal from being forced into pressure-induced gaps, improving fitting reliability with wider molding tolerances.

An annular channel and centrifugal ejection holes return leaked working fluid inward, helping rotating seals resist misalignment, wear, and leakage.

A compact seal layout uses a pop-out regulation portion and compressed secondary seal to shorten axial length while maintaining reliable sealing.

A recessed, polished sealing profile cuts wear during repeated compression, traps particles, and preserves chamber airtightness in substrate treatment.

Multiple cast oil pan segments maintain stiffness in large engines while reducing part weight, manufacturing complexity, and handling difficulty.

Multiple elastic sealing lips keep contact during ring axial displacement, helping rolling bearings block water and dirt ingress.

A modular sealing body, support, and guide let one hydroblasting tool use centrifugal or magnetic brakes while reducing jamming and leakage.

Tongue-and-groove segmented seal sections maintain flange sealing continuity during installation and remove the need for messy, non-reusable RTV.

Titanium oxide with controlled magnesium oxide improves HNBR gasket blister resistance and roll kneadability without sacrificing sealing strength.

Lateral deformation of the sealing gasket compensates for fluidic thermal expansion, preventing optical window displacement and maintaining image stability.

An outward bulging resin rib on a weather strip joint distributes bending stress to prevent crack formation at the sealed interface.

Landing extends into annular seal groove to absorb thermal expansion and vibration, reducing noise and wear on cylindrical ports.

Magnetic or friction locking mechanisms secure tension bows against wind and vibration forces, preventing tarp lift and wear.

Die-cast light metal alloy frames merge structural components to reduce weight, simplifying assembly while maintaining rigidity.

Segmented ring seals use extending tabs to contact interfacing surfaces, reducing leakage while minimizing stress on fastening members in gear cases.

A roof locking apparatus grips the middle portion of a vehicle roof edge to secure the structure during operation.

Segmented helical lip seal distributes wear across multiple barriers to maintain fluid-tightness against abrasive stirrer bodies.

Adjustable wear sleeve assembly uses a deflectable coupler to center the sleeve on the shaft.

A seal assembly uses a spiral groove on an elastomeric lip to generate fluid-dynamic pumping action during rotation.

Adhesive tape bonds to edge strips and foam bottom, allowing complete foil removal without residue.

Tangent grooves guide coolant circulation through the seal interface, resolving insufficient frictional contact in volatile gas environments.

Ventilation section with filter equalizes internal pressure to prevent boot damage and allow longer stroke lengths.

Varying radial height eliminates thermal spraying uncertainty by using the wiper itself as a cutting tool to protect against abrasive damage.

A sealing ring uses guiding rings with different thermal expansion coefficients to limit axial clamping force fluctuations.

Elastic lamellae in the sleeve housing seal cable entry points, eliminating heat gun assembly and curing delays.

A linear drive servo drill coordinates with an insertion device to form holes and place blind attachments in moving rubber seals.

Radial bores connect circumferential grooves on the running surface to equalize pressure distribution, preventing wear on downstream sealing elements.

Inserting a dedicated shock absorbing member into the flange absorbs rotational shocks through plastic deformation, reducing stress on the vacuum vessel.

Expanded graphite protrusions scrape during insertion to secure spherical annular seals, preventing drop-off while maintaining tight contact.

A piston rod sealing unit uses a deformable gland supported by a plane sliding surface to maintain a stable lubricant film.

A compressor seal package combines non-contact and radial shaft seals to manage fluid flow.

Segmented spiral grooves and a static dam prevent static oil leaks while maintaining high pump rates for rotary shaft seals.

Elastomeric seal member on spacer plate seals jaw surfaces, preventing dirt entry and pin wear without lubrication.

An additional lip energized by a second fluid distributes pressure and reduces wear on main lips in offshore rotating equipment.

A pump seal assembly uses a resilient protection ring to absorb impact energy from drive teeth.

A bolt carrier gas key integrates a compressible seal within a dedicated groove to prevent gas leakage caused by part mismatch and debris accumulation.

Optimized nitrile copolymer composition resists hydrogen sulfide degradation while maintaining shapeability.

Segmented seal assemblies reduce leakage by combining rigid outer shims with flexible filler layers to accommodate misalignment.

Tilting side panels on a modular truck bed frame clears the loading path for tall items while maintaining a waterproof seal when vertical.

Radially-oriented holes deliver oil to the sealing interface, reducing wear from elevated rubbing velocities while minimizing weepage.

Circular-arc geometry distributes radial stress to prevent deformation and air leakage in compressed air brake systems.

Selective silicon carbide deposition on graphitic carbon bodies prevents oxidation damage while maintaining mechanical seal integrity.

Inner and outer raised lips center the gasket in semiconductor joints, preventing assembly damage to sealing areas without separate retainers.

Segmenting the seal into two hollow portions eliminates visible gaps and dirt entry without requiring significant door frame height.

A spacer interposed between outer and inner deck cover panels enables inclined panel designs.

Expanded junction cross-sections enable uniform diagonal expansion, eliminating gaps at right angle corners.

Segmented cutting fills tubular members with expanded graphite strips, resolving the productivity-strength trade-off in yarn manufacturing.

Dynamic honeycomb seals on rocking vanes maintain alignment and reduce cooling gas consumption during thermal expansion.

An extensible continuous segment between fixed and sliding skirts adapts to high pressure, preventing oil leakage while minimizing friction losses.

Variable flexural rigidity in a non-circular metal seal ensures uniform sealing on straight portions while reducing fastening force.

Lateral cloth attachment to a moving frame link resolves sealing tightness versus kinematic freedom trade-offs.

Ramp portions accelerate fluid flow to generate hydrodynamic lift, reducing contact pressure and heat generation in high-speed seals.

A sealing arrangement with an axially contoured support device stiffens the structure to enhance mechanical integrity.

A full hoop thermal control ring manages blade outer air seal position to reduce core air leakage and improve gas turbine engine efficiency.

Segmented sealing plates with flexible connectors adapt to center displacement in rotary kilns, reducing gas leakage and extending service life.

A pump sealing system uses a pressurized barrier fluid to restrict pumped fluid from entering the seal chamber.

Segmented ceramic rope seals conform to relative deflections in gas turbine engines, maintaining sealing pressure under elevated temperatures.

Offset axial pilot aligns elastomeric ring during press-fit, reducing misalignment damage and overheating in work vehicle hubs.

A concealed exterior beltline molding integrates sealing lips within the side door assembly to maintain weatherproofing.