Engine Seals TRIZ Cases

A spring-biased shuttle seal keeps inverted liquid cartridges closed during changeout, reducing chemical spillage in gravity-fed dispensers.

Operating and environmental data feed a mechanical face seal digital twin to predict failures early and support proactive maintenance.

A two-position seal blocks contaminants during reprocessing, then rotates with the driveshaft to avoid heat, drag, and seal wear.

Multi-lip sealing and a curved top with cooling channels protect the bearing from heat, water, and solids while avoiding re-lubrication.

An extended sealing lip and recessed groove create a longer labyrinth path in rolling bearings without assembly interference or added drag.

Carbon nanotubes on an annular seal cut compressor leakage while lowering frictional drag, wear, and brush seal manufacturing cost.

A stiff insert seals body holes under roller pressure, blocking ink and solvent buildup while avoiding adhesive delamination.

Nested detachable gasket layers let one pipe coupling fit different conduit diameters while preserving alignment and sealing integrity.

Radial through-holes in non-contact seal shoes relieve heat and stress while spring elements improve damping and sealing in rotating equipment.

A bellows-shaped piston boot blocks muddy water from exposed cut-away areas, improving metal member corrosion resistance and mold simplicity.

A movable annular retaining member controls seal deformation in a downhole plug, preventing mandrel breakage and improving wellbore plugging reliability.

Circumferential beads and a PVC-free annular gasket improve seal integrity, opening resistance, and anti-backoff under thermal cycling.

A single adjustable seal between independent loading components simplifies direct fluid device testing while improving sealing reliability and flexibility.

Nested seal sections close disjointed corners between CMC vane arc segments and supports to limit cooling air leakage and thermal stress.

A graphene oxide and molybdenum disulfide coating cuts dry gas seal friction and wear while improving adhesion under high load and heat.

Opposed axial spring elements support seal shoes to seal rotor-stator gaps without rubbing, reducing heat generation and friction losses.

Integral heat-transfer channels in the stationary seal ring control dry-running temperature without external cooling lines, reducing leakage risk and wear.

Curved dimple groups vary suction and dynamic pressure to keep sealing performance and sliding torque stable across wide speed ranges.

Integrated guide vanes in an abradable turbine wear face straighten leakage flow, cut pressure losses, and improve re-entry into the main stream.

Using lighter seal shoes on a nickel-alloy base, this hydrostatic non-contact seal cuts heat, mass, fatigue risk, and leakage.

An intumescent seal in elevator door-jamb gaps expands under heat to block flame, smoke, heat, and noise without affecting normal door movement.

Spring-supported seal shoes and axial locators improve rotor-stator gap sealing while reducing heat, stress, and service cost.

An embedded clamping ring and elastic seal lip improve shaft and housing sealing, blocking water and dirt while keeping maintenance easy.

A graphite thin film with embedded fillers on a SiC sliding surface maintains low friction without lubrication while resisting wear and foreign matter.

Angled multi-plane bristles and back-plate support limit flutter and deflection, helping turbine brush seals hold pressure gaps.

A contact seal beside multiple non-contact seals preserves shaft sealing reliability when helium purge gas supply is interrupted.

A silicone rubber engine inlet compression seal replaces hard-to-make titanium J-seals to improve fatigue tolerance and handling durability.

A replaceable face seal in an end nut preserves high-pressure sealing, reducing leaks, sample carryover, dispersion, and column waste.

Dual-color injection molding integrates the seal with the housing to prevent dislocation, reduce leakage risk, and simplify assembly.

Circumferential ribs on sanitary valve sealing surfaces absorb O-ring deformation, preventing gap extrusion and preserving seal reliability.

Integrated support structures form closed honeycomb cells that cut seal friction, improve thermal insulation, and block solder flow in turbomachines.

A preassembled edge seal, cover, and recessed seal bead eliminate fuel-tank sealing work while protecting composite cut edges from leakage and corrosion.

A porous sealing element equalizes housing pressure while blocking moisture and particles, avoiding sensor errors and extra vent openings.

A snap-fit elastomeric gasket replaces failed RTV sealing on timing chain tensioners, restoring oil sealing without replacing the full assembly.

A textured groove in a rotary swivel seal improves frictional hold and drains leaked liquid to prevent oil pockets and seal rupture.

A labyrinth lip covers the main clearance to block muddy or salt water ingress while routing foreign matter out through a radial discharge gap.

A spring-loaded graphite seal maintains cylinder contact, isolates manifold forces, and reduces gas leakage under vibration and thermal strain.

A retaining part mounts the bellows on the bearing assembly, shortening the slip stub while improving resistance to axial stress and vibration.

Disconnected inner and outer annular sealing portions maintain conduit joint sealing under internal or external pressure imbalance with lower assembly force.

Fluid pressure expands an annular metal seal to close its slot and maintain leak-tight sealing in high-temperature plastic melt passages.

Magnetic attraction replaces springs in a marine drive shaft seal, maintaining contact thrust during axial and radial shaft movement.

Measuring preload ring deflection enables seal wear and pressure monitoring without disturbing the dynamic sealing interface or shortening service life.

A pre-assembled lip seal and bearing package improves fluid containment, reduces leakage between components, and simplifies mounting.

A dual-seal turbine arrangement limits excess fluid flow while preserving cooling air purge and stray oil removal in the bearing compartment.

Unconventional canted coil springs stabilize seal loading, prevent rolling or tilting, and reduce friction-driven wear in seal assemblies.

Curved lobed seals lock into housing undercuts to keep engine air filters sealed during shipping, installation, and severe vibration.

A lip-extended floating seal shoe controls radial motion to reduce wear, leakage, and seal loss in gas turbine pressure regulation.

A glassy carbon sheet bonded to the seal face prevents precipitate buildup while improving wear resistance and manufacturability.

Loop-shaped gasket gaps redirect liquid circumferentially to slow corrosion-driven ingress and maintain housing sealing over time.

Mirror-image lubricated seals let a suction roll run in both directions while simplifying spare roll use and seal maintenance.

A conductive strip within a seal assembly completes an electrical circuit with the shaft upon lip wear to generate a warning signal.

Integrating teeth into a rotating seal plate eliminates separate toothed pieces, reducing part count and weight in gas turbine engine compartments.

A coating agent composition combines polytetrafluoroethylene, urethane, and hydrogenated NBR resin emulsions to adhere to rubber surfaces.

Flowable elastomeric material dispensed on enclosure surfaces forms a uniform watertight barrier without separate tooling.

Segmented weather strips with integral connection portions bridge the border between panels, preventing water leakage at the opening rim.

A sprung seal assembly uses sliding lugs in retainer channels to maintain contact between movable nozzle components.

A double seal system with a tapered outer seal and inner insert resists compression deformation under high pressure water discharge.

Segmented laser marking adapts to toroidal geometry, resolving readability distortion while ensuring falsification security.

A gasket spacer member balances plate thickness differences between seal plates and bolt holes to maintain uniform contact.

An integrated spring energizer retains a seal member inside a housing cavity, accommodating thermal expansion and vibration through elastic deflection.

An asymmetric tuned arm adjusts the static seal position to minimize fluid leakage gaps during high-speed operation.

A composite metal seal combines a metallic load-bearing element with an elastomeric barrier to achieve tight sealing in dynamic applications.

A chip collector diverts debris while a sealed screen retains fluid, preventing chip penetration damage to the workpiece.

Segmented sealing elements and an elastic arm enable maintenance access without removing the frameless cover, resolving inspection difficulties.

A gasket uses sawteeth-like embossed surfaces on multiple sealing layers to achieve perfect sealing under vacuum and high pressure conditions.

A seal structure uses a drain passage to move water from the cable gap before it reaches the sealing portion.

A seal assembly uses a carrier to move between sealing and rotation positions for bioreactor agitation.

A sliding door sealing structure uses a touch sensor projection to contact a buffer for elastic sealing.