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.