Engine Seals TRIZ Cases

A notched gasket with a base and forward lip maintains sealing even when clamp-type fittings tilt under pressure differentials.

An eccentric annular plate keeps the bristle bore aligned to the rotor, reducing leakage, frictional heating, and local contact pressure.

Multiple spaced spring elements support seal shoes in a non-contact seal that cuts frictional rubbing, heat generation, and internal stress.

A lower-density outer seal runner section offsets thermal growth and centrifugal force to keep turbine seal gaps stable and reduce leakage.

A non-magnetic intermediate member blocks magnetic leakage in a fishing reel, keeping the anti-reverse mechanism smooth and handle rotation light.

A rounded-peak fuel tank seal stays seated in its channel without adhesive, avoiding over-compression, rupture, and leak-prone assembly errors.

Groove-shaped channels vent creeping combustion gases from gasket gaps to the outer edge, protecting elastomer seals and fluid channels.

Perpendicular punched ring boundaries enable precise press-fit seal assembly with lower processing cost and a closed structure without joining lines.

Integrated wedge parts hold the gasket in place against media pressure, preventing blowout, leakage, and plate heat exchanger downtime.

A baffled duct, scraper planer, and discharge passages keep abrasive particles out of a rotating casing seal and extend service life.

A self-aligning, self-lubricated gland assembly seals rotating shafts without flush water, preventing slurry leakage and product dilution.

A coaxial V-ring seal and secondary seals keep dust, dirt, and fluids out of the belt tensioner while accommodating pivot wear and movement.

Slanted auxiliary-lip protrusions create fluid-entry gaps that lubricate the main lip while blocking contaminants and reducing slide abrasion.

A digital twin monitors mechanical face seal operation from transmitted data to predict deviations early and support timely maintenance.

Deep and shallow groove regions recover and redistribute sealed fluid, improving sliding-surface lubrication while limiting leakage.

A pressure-actuated flexible band seal prevents standstill shaft leakage under high pressure while resisting distortion and retracting cleanly.

Angularly offset rupture points and a 7-shaped ring sheath limit elastomer extrusion, maintain sealing, and reduce setting energy.

An embedded clamping ring adds radial pretension and axial retention, improving dynamic and static sealing while reducing bearing wear.

A radially projecting seal makes the filter visible outside the pressure vessel, improving installation checks and safer servicing.

Pressurized gas fed through a slip ring forms an annular dust barrier in a cone crusher, reducing oil contamination and seal wear.

A movable sealing member and actuator reopen and reclose the liquid reservoir outlet to prevent leakage, contamination, and shelf-life loss.

A floating stator with a semi-spherical interface and pressurized sealing fluid maintains shaft sealing during radial and angular misalignment.

A tapered metal-ring seal lets this sintered-metal nozzle filter be removed easily while preventing high-temperature gas leakage and wear.

A frusto-conical gasket with annular platforms adapts to varying tub drain shoe sizes and depths, simplifying installation and sealing.

Opposed dynamic pressure grooves with matched bottom inclinations keep sliding surfaces separated in forward and reverse rotation, reducing wear and leakage.

A non-circular clamped seal profile prevents O-ring pullout during vacuum valve opening, reducing malfunction, contamination, and maintenance.

Notched inner-wall gaps expose missed press-fitting during pressure tests, while deformable convex sections restore sealing after compression.

An ePTFE-impregnated mesh integrated into a flange gasket enables low-clamp-load sealing while filtering particulates in piping connections.

Purge gas routed through seal-body channels restricts oxygen diffusion through hot O-rings, helping process chambers hold vacuum integrity and yield.

Carbon fibers and carbon nanotubes help CVT pulley seal fluororubber retain oil film and resist abrasion, protrusion, and hydraulic pressure.

Composite anti-extrusion seals and backer rings keep hydraulic components sealed in fire zones, limiting leakage and fire spread.

A stepped jig locks gasket orientation during mounting, preventing reverse installation, sealing failure, and extra painting or checking.

A tenon-mortise joint replaces screws in seal cartridges to simplify assembly, avoid thread damage, and maintain secure shaft sealing.

Centering ribs and guide portions pre-align the lid seal member and projection, preventing hinge or deformation-driven misalignment and seal loss.

Axially extended seal shoes and a secondary seal assembly improve non-contact sealing while reducing heat, stress, and vibration in rotational equipment.

A segmented ring profile and staged winding process improve circularity and sealing while cutting oil consumption and particle emissions.

A tapered shallow groove feeding a deep groove sustains negative pressure in mechanical seals and helps prevent leakage across rotation speeds.

A dual-lip PTFE seal uses shaft and gland contact for self-retention, removing separate retainers while keeping sealing pressure stable.

Axial locators and spring-backed seal shoes maintain a non-contact seal that cuts heat generation while preserving sealing effectiveness.

Back-side rigidity elements create uneven contact pressure to limit seal heat damage while maintaining static and dynamic shaft sealing.

Metallic rings in a dynamic axial seal protect elastomeric seals from pressure transients, improving sealing life in harsh fluid machines.

A stringer-stiffened sealing strip aligns neutral fibers on convex aircraft surfaces to cut parasitic drag and attachment line discontinuities.

Worked seal grooves use brazed or press-fit buildup inserts to restore piston sealing, reduce fretting damage, and limit gas leakage.

A sealing member under the fastener head blocks environmental ingress at the weld interface, improving corrosion resistance in friction-welded joints.

A perylene-based perfluoroelastomer seal improves high-temperature ozone resistance without inorganic fillers, helping avoid contamination.

A porous heating film and absorbent body spread heat evenly across e-liquid, improving atomization uniformity and taste.

Pivot bodies on a retaining ring use centrifugal force to keep the spring loaded, preserving shaft sealing lip contact at high rotational speeds.

A tapered radial thickness profile lets a joined resin seal ring better match rotating cylindrical members, reducing junction gaps and leakage.

A dual-vulcanized HNBR gasket with TAIC and carbon black cuts compression set and resists low-temperature cracking in auto AC seals.

Threaded removal features let a hydrostatic non-contact seal overcome snap-fit retention for inspection and repair without damage.

Reinforcing fibers in a release layer match the thermal expansion of carbon plates, preventing seal material from expanding beyond desired locations.

An oval cross-section seal ring engages a cylinder head step surface, preventing gas leakage despite creep deformation and thermal contraction.

A vertically long gasket maintains outer perimeter constraints within mounting grooves to ensure stable contact under operational loads.

Four flexing sealing lips on a bilateral body cover pivot joint gaps, preventing debris penetration and reducing wear without requiring part disconnection.

Shoe plate uses aerodynamic force to adjust clearance, reducing leakage and wear during steady state.

Overlapping extension sections eliminate visible gaps between fixed window panel and beltline molding to reduce wind noise.

Axial securing sleeve fingers and sealing lip create dynamic ventilation channels in constant velocity universal joints.

A fuel injector support ring features a central radial opening to reduce extrusion risk and shear load on the sealing element.

Alternating width segments accommodate thermal expansion, reducing pressure on the box main body while maintaining water-tightness.

Brush-polished sealing bands eliminate the break-in period and initial leakage in rotary face seal assemblies by maintaining a consistent surface finish.

A rotary sealing gasket uses nested elastomeric lips and rigid support rings to create multiple barriers against fluid leakage.

Segmented sealing and integrated locking simplify assembly while preventing air leakage between the cloth edge and gasket at high speeds.

Segmented sealing chamber uses pressure differential to prevent particle ingress and extend service life of lubricated components.

A seal damper assembly absorbs shock and vibration between a sliding seal and housing to reduce wear on engine components.

An elastomeric component envelops the metallic coil spring to dampen vibrations and reduce noise while maintaining precise valve alignment.

Bending machined thermoplastic rods below yield point forms seals on-site, eliminating complex heating systems for deep-water applications.

Integrating the carrier and support ring eliminates complex welding of super-alloys, reducing mounting complexity while maintaining sealing capability.

Perforated flexible seal strips resist pressure gradients and reduce fluid leakage by enhancing circumferential flexibility while maintaining axial rigidity.

Clamping shanks tack-weld to body flanges, eliminating manual holding during adhesive tape application.

Porous media distributes pressurized fluid to maintain a non-contact gap, reducing friction and wear in rotating equipment seals.

Segmented seal rings with fence-shaped units prevent moisture ingress while maintaining signal transmission through gaps.

Sloping upper sealing ring accommodates skewed conduit faces and surface imperfections for reliable raintight connection.

A multilayer sealing gasket combines waterproof layers with an intumescent core that expands under heat to block fire.

A tapered backup ring with a rounded boundary surface increases contact area to distribute pressure evenly across the seal lip.

A tapered sealing ring with a radial orifice manages leakage across wide pressure ranges, reducing manufacturing complexity and cost.

Internal webs change angle upon compression to reduce upward deflection and prevent creep in building expansion joints.

Segmented spacer design prevents displacement during injection molding, ensuring electrical insulation and reliable terminal portion performance.

A seal arc segment uses a rib and slot interface to restrict circumferential movement while allowing radial thermal growth.

A seal support system manages fluid flow through a pressure vessel to maintain mechanical seal integrity during operation.

A rotary seal assembly uses a static member to prevent relative angular displacement between the biasing O-ring and dynamic sealing element.

Segmented tri-fold panels and a lightweight honeycomb core resolve the trade-off between cargo security and ease of access.

Asymmetric leaf seal assembly flexes radially to create an air film, preventing tip wear and fluid leakage regardless of pressure gradient direction.

A mechanical seal cup gasket features a tapered portion that allows elastic body escape into a casing gap during assembly.

An application device integrates an optical inspection system to detect defects in sealing profiles during vehicle body assembly.

Combines limit stop, static seal, and dynamic lip into one assembly to cut weight and cost while maintaining stroke.

A rotary shaft sealing assembly uses a pressure-generating seal ring to flush and lubricate the cantilevered lip seal during rotation.

Pre-printed profile numbers on weatherstrips eliminate manual cross-referencing errors during window and door assembly.

Rotating mandrels wind strips from stationary reels, eliminating heavy rotating spools and increasing production speed.

Segmenting the profile into three lips and contoured sides resolves pressure changes and water intrusion by diverting moisture away from contact points.

An intermediary shaft reduces rotational speed at the seal interface, preventing lubricating oil penetration caused by centrifugal forces.

Segmented elastic seal chips adapt to rod diameter variations, preventing preform contamination and breakages in heating furnaces.

A ring seal midplate sets allowable eccentricity for the rotary machine seal assembly.

Inverting the mounting bracket fixes the lower base end to reduce hook height, improving rigidity against thermal expansion loads.

Varying elastomer proportions within a fixed cross section creates distinct sealing properties along the strip length.

A flexible elastomeric gel gasket integrates a non-woven nylon web to maintain dimensional stability under compression.

Projection abuts door portion to prevent misalignment during assembly, ensuring moisture-tight seal integrity.

A metallic sealing ring with a stiffness relief groove forms an annular spring zone to maintain consistent contact on non-planar surfaces.

A passive electrical connector with a spring-loaded plunger links terminals on vehicle bodies and movable windows.

Continuous annular ring with spline engages tubular groove and deflects radially outward to lock, preventing component loss during handling.

Segmented blade root seals with variable thickness slots distribute operational forces to resist deformation, preventing buckling under stress.