Engine Seals TRIZ Cases

An axially tensioned spring seal surrounds the pump outlet to maintain sealing despite tolerances, thermal change, pressure pulsation, and gap extrusion risk.

A continuous membrane isolates actuators from coating agent, preventing drying and contamination while preserving independent nozzle actuation.

L-caps, P-seals, and end plugs keep the engine firewall seal engaged during engine movement and high-temperature operation.

A vertical brush seal placed outside the hot-gas path uses cooling air and flexible bristles to seal turbomachine gaps despite axial and radial movement.

A rotatable cover with a silicone seal and seal ring prevents e-liquid leakage and protects pneumatic switch function during refilling.

Longer beams decouple shoe pitch from seal motion, expanding radial travel while maintaining gap control, lower leakage, and longer seal life.

A hydrophobic small-diameter tube equalizes bearing pressure while blocking water and contaminants to reduce seal lip wear.

A one-piece lattice slat end seal absorbs inboard-outboard forces while cutting aircraft wing seal weight, part count, and cost.

A vent tube and groove-based bubble release keep the e-liquid inlet clear, making refill easier and reducing condensation blockage.

A two-piece rotating seal seat uses an internal cooling cavity to improve heat dissipation and reduce temperature gradients in gas turbine seals.

A grooved hold-door seal with pressure-equalizing passages cuts gas leaks and maintains fire-extinguishing concentration without extra gas reserve.

A sacrificial tab sheds detectable material when seal nose wear reaches a threshold, giving early warning before carrier damage and unscheduled turbine maintenance.

Segmented radial-circumferential passages bring cooling fluid to the rubbing seal interface, lowering seal land temperature and wear.

Using the working fluid as both lubricant and seal, this gas bearing supports the rotor while separating high- and low-pressure regions.

Separate oil and dust seal members plus an intermediate rigid ring reinforce lip support for reciprocating shafts under high internal oil pressure.

A stepped resilient seal plate uses a rigid lever to track spoiler motion, maintain sealing pressure, and preserve a continuous aerodynamic surface.

Magnets bridge the gap between the aft frame and stage one nozzle to keep sealing aligned under heat and prevent combustion gas leakage.

A fold geometry that keeps disc brake bellows circular during long extension, reducing contact wear, leaks, and premature replacement.

Opposing spring sets keep axial force stable in a translating face seal, reducing wear, seal failure, and hardware damage.

An annular inclined stopper on the sleeve restrains rotary ring tilt and gasket slippage under fluid pressure, preserving stable sealing.

Separated welding zones in a metal diaphragm damper improve sealing accuracy, durability, and pulsation absorption in fuel pumps.

Heat conductive rods and a dissipating jacket remove sealing-gap heat in high-speed magnetic liquid seals without complex water cooling.

Radial and circumferential cooling ducts through the seal lip improve guide vane cooling uniformity, reducing thermal stress and damage.

Internal seal chambers and nut passages recirculate migrating lubricant in a screw assembly, reducing loss and extending relubrication intervals.

Pressure-responsive fluid passages keep the squeeze film damper filled and pressurized, reducing bearing vibration, stress, and cavitation.

By moving axial bearings from the housing into the vane surfaces, this case prevents seal wear, dead band, and internal fluid leakage.

A nested inner and outer housing brush seal uses radial displacement and pressure balancing to cut fretting wear and maintain sealing.

A pressure-balanced tadpole seal with a silica-covered Inconel bulb handles axial and radial exhaust duct movement at high temperature.

A single-crystal superalloy shim seals CMC turbine gaps above 1000°C, preventing gas leakage and cooling medium mixing.

Curved and asymmetric seal teeth use the Coanda effect to divert flow into cavities, dissipate energy, and cut leakage in rotating machines.

A segmented carrier and spring-loaded non-contact seal maintain rotor-stator sealing while reducing heat transfer, wear, and replacement needs.

Separate pressure cavities, grooves, and vent channels adjust seal seating forces to cut wear, heating, and fluid mixing in turbine engines.

A compressible outer seal and fluid-filled elastic core conform to macro and micro surface irregularities while preventing vacuum loss and slip.

Dual dynamic O-rings, an outer seal, and a rotating sleeve cut pump shaft leakage and wear while simplifying retrofit maintenance.

Roll forming an asymmetric strip into a joined ring seal cuts turbine seal complexity and cost while meeting tight tolerances.

A finger seal, stop, and rippled diaphragm absorb large engine deflections to prevent permanent seal deformation and preserve flow-path sealing.

A spring-loaded seal pad contacts the rotor at stop and opens a controlled gap in rotation to limit leakage, friction, and seal damage.

Wavy cavity sections and 6 mm rounded corners let one mold form multiple waterproof gaskets, cutting mold volume, cracking risk, and cost.

A shaped annular seal blocks fracking debris from the sealing gland and maintains sealing force during high-pressure pulsation.

An integrated stack nut combines bearing retention and knife-edge air sealing to cut tolerance stack-up, hardware count, and repair cost.

Differential bead stiffness and selective stopper use help cylinder head gaskets maintain sealing under thermal cycling and screw loads.

Non-uniform tabs and grooves in a gas turbine controlled gap seal disrupt airflow, weaken excitation frequencies, and reduce runner cracking.

A compliant sealing member and gap regulator remove passage gaps, cutting residual sample liquid while preserving electrolyte measurement accuracy.

Prestressed spring-energized polymeric seals back up a metallic seal ring to keep tubular joints fluid-tight when bending loads separate end faces.

A PEEK seal paired with a lower-friction PTFE ring and pre-stressing spring cuts wear, resists extrusion, and maintains sealing under rotation.

Lightening holes placed at a constant distance from the seal bead reduce molding stress and keep metal gasket sealing height uniform.

A compression seal paired with a metal-to-metal seal cuts leakage and vibration in reciprocating pumps while simplifying high-pressure maintenance.

An annular metal projection deforms a softer mating surface to stop fluid bypass without gaskets, O-rings, or liquid sealants.

Compressed air deforms a bearing seal lip to cut inner-ring contact during operation, then restore braking contact for fast shaft stopping.

Axial and circumferential slots let a gas turbine seal runner flex under load and heat, reducing warping, leakage, and premature seal failure.