Engine Seals TRIZ Cases

A sliding seal-ring joint and tension ring release fluid pressure before overexpansion, preventing valve seal detachment and rotation failure.

Stress-concentrating grooves form sealing lips that achieve leak-tight high-purity fluid joints with lower axial force and less handling damage.

A stretchable seal ring uses centrifugal force and a labyrinth path to block contamination and fluid leakage without friction wear.

A connecting channel balances pressure between annular gaps to limit sealing cylinder deformation, reduce leakage, and widen material choice.

Integrated conductive circuits in a corrugated bellows detect water or conductive liquid buildup before it damages mechanical joints.

Deep and shallow groove sections with a trap portion retain sealed fluid, cutting leakage while sustaining lubrication on the leakage side.

Concave seal surfaces and multiple ridges enable low-force annular sealing while reducing wear and allowing reuse at new engagement points.

A bridge-and-finger interlock secures plate heat exchanger gaskets without adhesive, cutting mounting time while preventing displacement.

Ducted hot gas forms a hydrodynamic film in circumferential seal grooves to stop oil migration, gas mixing, and coking risk in turbine engines.

A cooling line routed around the shaft opening removes friction heat evenly, preventing sealant overheating and extending seal life.

Dual radial shaft seals use chamber gas pressure to cut friction and wear while leakage pressure indicates seal condition before failure.

Inward and outward recesses collect and expel wear debris from rotating seal ring faces, limiting surface damage and preserving low friction.

Discontinuous WRB attachment and edge flaps keep wall mate lines sealed while allowing repeated service access with less air infiltration.

A collapsible reservoir and ball-and-spool cartridge improve insulin dosing accuracy, sterility, and pump interchangeability with simpler use.

A projecting flange and side lip maintain sealing pressure across positional variation, improving annular gap sealing with fewer parts.

Perimetrical flange voids let a rupture disk compress and expand into a tight seal, reducing membrane damage during installation.

Overlapping segmented barriers support an elastomer seal in large pipe gaps, preventing creep and maintaining isolation at high pressure.

Repositioning seal rings and adapter rings shifts the seal point to fresh surfaces, extending packing life and reducing pump downtime.

A tangential overlap over the seal butt joint blocks lubricant discharge in wind turbine bearings while preserving segmented assembly.

A pivoting scraper keeps dust exclusion and lubricant retention active without hindering reciprocal linear motion when the moving member tilts.

A nested retainer sleeve, lip, and spring secure the seal element in less space while lowering internal stress and preventing rotation.

A resilient grommet seals the grease sensor probe in the housing, preventing leakage while enabling stable push-in installation.

A phosphoric acid and alumina-based coating helps engine gaskets resist hot antifreeze and keep rubber adhesion without chromate.

Circumferential vents equalize pressure between the main and dust seals to limit vacuum, carbon buildup, dust ingress, and external leaks.

Carbon nanotubes in cross-linked fluororubber cut metal adhesion after high-temperature contact while preserving sealing and compression set resistance.

Metallic rings in a dynamic axial seal protect elastomeric elements from pressure transients and harsh process fluids, extending seal life.

Integrated keys and a KX sealing ring let a compact flange resist shear and torsional loads while preserving seal integrity under pressure.

Localized taper and a flat outer end raise seal strength and surface pressure in pipe joints, preventing deformation and fluid leakage.

Open-ended ID channels and segmented carbon seal geometry distribute buffer air to limit oil leakage while improving wear tolerance.

A flexible sealing member creates a variable liquid chamber that improves high-frequency stiffness and vibration damping in rail springs.

A cylindrical shoulder and overlapping auxiliary crests help a CV joint boot resist stress and interference at operating angles above 50°.

A cable-driven sealing element replaces fading spring force to keep rail door and window closures flush, quiet, and thermally stable.

An embedded reinforcing ring and inward seal lips help the gasket tolerate depth variation, limit overcompression, and keep sealing stable.

Angled, coated sealing surfaces let this annular metal gasket seal elastically, avoiding secondary seals, galling, and gas leaks.

A coated gasket keeps a compressible seal clean, stable, and fluid-tight during transport, assembly, and underwater installation.

Multi-part seals between robot links block dust and water while lowering friction and wear in harsh and clean environments.

Pilot-guided seal seats and a biasing member keep turbine ring seals centered during assembly, preventing impact damage and extending service life.

Curved dynamic-pressure grooves recover and return sealing fluid, improving lubricity while reducing leakage in mechanical seal sliding surfaces.

Communication, storage, and dynamic pressure grooves form a fluid film and return excess sealed fluid to maintain sealing with lower friction.

A foam core, tacky polyurethane gel, and PTFE barrier create an aircraft gasket that blocks moisture, resists corrosion, and removes cleanly.

A radial spring and transmission element cut seal packing bulk while maintaining shaft sealing and easing tolerance demands.

Hydraulic piston bias replaces spring loading in a face seal, maintaining seal integrity under high-pressure CO2 differentials.

A cammed multi-ring scraper seal removes abrasive debris from pump plungers, extending packing life and reducing nibbling in harsh service.

A pressure-actuated seal opens during rotation and closes for rinsing and sterilization, reducing contamination risk and water use.

A mullite-based machinable coating shields adjacent ceramic and metal turbine parts from heat and thermochemical reactions.

Magnetically coupled seal links and flexible joints keep the aft frame and stage one nozzle sealed despite heat growth and vibration.

Grooved sliding surfaces speed sealed-liquid discharge at startup, suppress gas-side liquid entry, and enable faster non-contact sealing.

A locally stiffened brake piston seal limits axial deformation and hydraulic volume change, improving pedal feel and brake force consistency.

A spherical floating stator and pressurized sealing fluid keep shaft seals effective under misalignment while reducing wear and easing clean-in-place.

Segmented fluid end housing removes high-stress bore intersections, improves sealing and wear resistance, and shortens section replacement time.

Radial clips replace screws in the oil flow path, eliminating leakage risks while allowing side access for gasket mounting.

Segmented bellows valleys with thinner peak apexes minimize contraction length while maintaining elasticity for shock absorbers.

Pressurized fluid moves the seal axially to disengage from the inner ring, reducing drag torque while maintaining sealing performance.

A rotary pump mechanical seal uses an external locking plate to prevent twisting and axial displacement of the shaft.

A dual-seal dowel assembly uses spring-loaded and toroidal seals to maintain oil containment in heavy-duty conveyor sprocket units.

Inclined fastening means attach a slide ring seal body directly to a pump casing, eliminating separate flanges and reducing required bores.

A rustless sleeve with internal fluid passages routes supply fluid away from metal joining surfaces to maintain hermetic sealing.

Segmented elastic lips accommodate rotational differences between inner rings, reducing wear and extending service life in large-diameter work rolls.

Segmented O-ring seals on a stepped carrier prevent liquid ingress into the injector space, stopping corrosion and electrical shorting.

Offset weld ring eliminates torque on metal seals, enhancing fatigue life under high pressure.

Segmented inclined portions on a seal ring generate hydraulic lifting force to reduce friction while maintaining sealing performance in automatic transmissions.

Interlocking groove and projection in the folded support prevent component separation while maintaining accurate obstacle detection.

A projecting surface between the adhesion area and flange guides weather strip positioning during attachment.

Segmented durometers in a trapezoidal gasket resolve the trade-off between adaptability and force while sealing pressure differentials.

Welding the secondary seal cover to the spacer reduces assembly weight while maintaining structural integrity for easier turbine installation.

A sealing profile integrates a hose connector mounted from one side of the vehicle body to simplify water drain attachment.

An asymmetric thread groove with a 0°±3° seal lip angle reduces static leakage clearance while maintaining rotational pumping action.

Angled bores direct gaseous medium into the gas space between housing and dry gas seal, eliminating intermediate assemblies that cause excessive heating time.

Segmented barrier chambers and a jet pump create negative pressure in the secondary seal to prevent hazardous nitrogen oxide leakage.

Periodic cavity projections created by variable extrusion anchor solidified flowable material, preventing reinforcement slipping at stressed bends.

Axial channels in the shaft sleeve guide blocking medium to absorb heat from slide rings, resolving insufficient cooling in limited radial space.

Composite ram body seal resolves extrusion reliability trade-off by allowing low modulus material to flow and return within high modulus channels.

Segmented elastomeric gasket with rigid spacer prevents torque loss from deformation in aircraft joints.

Resilient anchoring clips snap onto support flange to reduce aerodynamic noise while maintaining durable sealing.

Segmented circumferential bead portions compensate for head-lift induced pressure decline, maintaining sealing performance against high-pressure combustion gas.

Segmented annular carrier accommodates radial and axial displacement between structures, reducing leakage and load transmission in gas turbine engines.

A pliable docking collar seals fan housing and enclosure walls to block exhaust air from returning to the inlet.

A light conductor routes illumination through the gap between a recessed door handle and vehicle sheet for uniform apron lighting.

A hollow sealing portion uses differentiated wall thickness to reduce material weight and closing resistance.

Offsetting band ends and welding from both sides prevents melt accumulation in the overlap zone, ensuring uniform weld seam quality.

An asymmetric outlet cavity rotates to maintain tangent orientation, resolving limited layer adhesion in fused deposition modeling.

Segmented brush portions conform to moving leveler lips and static frames to eliminate lower gap leakage zones.

Segmented functional layers and composite stoppers distribute load evenly, preventing bead flattening and fatigue cracks.

Merges molding and run channel into one unit to reduce attachment man-hours while maintaining sealing function and operational reliability.

A stator vane rail employs segmented feather seal slots to retain seals radially while enabling controlled venting between plenums.

A brake caliper design uses a bellows-shaped sealing boot to achieve axial shortening while maintaining deformation freedom.

Organic microballoon fillers in silicone matrices prevent residue blockages from melting in high-temperature gas turbines.

An EPDM edge strip bridges overhanging window regulator rails, enabling the foam gasket to create a weathertight perimeter seal without nozzle interference.

A circumferential sealing rib on a hollow insert prevents air escape from the cavity, eliminating bubbles and blow holes in the moulded plastic portion.

Merging multiple components reduces assembling man-hour while maintaining sound insulation performance across different vehicle models.

A pin joint component uses clad stainless steel alloy and nitrided regions to enhance wear resistance.

Protrusions in ring grooves press against seal rings to dampen lateral movements caused by fabrication tolerances and vibrations.

Flared inlets in the seal member direct coolant through cooling passages to reduce hot gas ingestion and improve engine efficiency.

Segmented floating seals accommodate angular and lateral misalignment, reducing wear on reciprocating push-rods in viscous material silos.

Mechanical differential pressure indicator displays bladder accumulator fluid volume, replacing costly electronic transmitters and ATEX requirements.

A self-healing seal on a model vehicle ball joint housing opens under force to admit lubricant and closes automatically to block debris.

Inclined shoulders on the base body expand outward under pressure to form a wedge seal, reducing material volume while maintaining structural stability.

Composite bearing assembly uses segmented hard plastic and elastic rubber to isolate chassis vibrations while maintaining axial sealing reliability.

A bearing seal uses a nested labyrinth structure to block contaminants from entering the inner ring.