Engine Seals TRIZ Cases

Interference at the seal-lip end creates radial and axial reaction forces that accurately position the support ring and prevent eccentric sealing.

Multiple sealing lips and monitored buffer fluid help keep seawater out and hydraulic fluid in for immersed marine propulsion shafts.

Centrifugal oil flow cools the carbon seal seat face through separate channels, reducing frictional heating and wear without disturbing sealing.

Open-ended spiralized seal profiles snap together for non-destructive replacement while maintaining reliable sealing in large bearing assemblies.

Angled edges and lubrication grooves shift corrosion away from high-stress seal surfaces, reducing pump fluid-end wear and downtime.

A convex flame deflector shields the pressure boundary seal, prevents fluid pooling, and maintains airtight sealing under heat and panel movement.

An axially clamped split insert ring restores turbine annular-gap sealing in eroded casing regions while limiting leakage and blade-tip wear.

A compressible sealing ring and annular pusher maintain a tight tubular reactor seal despite tolerances, creep, and diameter changes.

Matching carbon seal and seat surfaces avoid break-in friction and heat in gas turbine bearing seals, cutting wear and premature failure.

A removable cooling spool forms an internal seal channel that improves heat transfer while avoiding deformation, alignment issues, and difficult cleaning.

A 3D sealing membrane isolates actuators from high-viscosity paint while preserving independent nozzle motion for cleaner color changes.

A curved support body and outer seal bead spread press-fit loads during bore insertion, reducing deformation and cracking while keeping a secure seal.

An annular shield retains a freely mounted sleeve while blocking bearing-chamber pollution, easing tolerance demands and extending pulley life.

Angled internal protuberances stiffen an elastomer air seal under compression, limiting sagging while easing nacelle mounting and preventing leaks.

Removable fireproof shells and a flexible bellows let torque tubes be checked without engine removal while maintaining fire isolation and fluid tightness.

An O-ring and molded seal layout closes oil pan transition gaps across three engine parts while cutting sealing cost and leak risk.

Split clamping collars create static shaft seals and compressed dynamic seals to stop lubricant leakage and reduce roller wear under heavy loads.

A radially movable seal shoe with softer abradable teeth absorbs rotor rubs during deflection, protecting gas turbine sealing hardware.

Two sealing beads of different heights compensate for voids and uneven housing compression to block unfiltered air and dust.

A central membrane-mounted temperature transducer enables real-time process temperature sensing without fluid inertia or extra sensor space.

Counterbores and relief grooves contain elastomer during molding, improving rotary seal yield and protecting critical sealing surfaces.

Intersecting grooves on both sliding components build dynamic pressure from startup to high speed, reducing seal wear and fluid leakage.

A machinable rim seal lip sets rotor-stator radial gap to limit hot gas ingestion, avoid rubbing, and better manage cooling air.

A movable support ring, spring preload, and secondary seal maintain sealing during pressure reversal while avoiding costly secondary sealing elements.

Integrated lights or wireless emitters make temporary opening markers easier to find and remove, cutting aircraft inspection time and FOD risk.

Center-split seal components simplify shaft mounting and dismounting while improving medium-pressure sealing and anti-cavitation life.

A preloaded retaining clip locks the radial shaft seal into a flange groove, cutting bellows diameter, parts count, and clean-room assembly steps.

A disposable sealing bush isolates grout flow from the nozzle to prevent resin hardening, cut clogging, and reduce rock bolt grouting downtime.

A shaft-driven impeller inside the seal housing circulates barrier fluid for lubrication and cooling without a separate external pump.

A spring-loaded hinged seal with a clip and wear shoe limits exhaust nozzle flap leakage while accommodating sliding motion and thermal growth.

A perforated partition and sidewall seal spread washcoat evenly over non-planar substrates while suction draws it through and limits leakage.

A conductive nonwoven buffer seal equalizes shaft and housing potential to prevent electrostatic damage and electromagnetic interference.

A creped metal-bitumen sandwich seal adds elongation reserve for non-planar joints while cutting lead use, metal content, and recycling cost.

Air passages around the upper punch dust cover maintain airflow while blocking dust suction that contaminates molded products and machine interiors.

Finger springs bias a bridge seal across CMC airfoil fairing gaps, maintaining sealing pressure despite tolerances and thermal change.

A sintered thin-wire metal matrix seal bends between moving components to maintain sealing, reduce wear, and extend service life.

A round heater-fixing surface and sealing member redirect liquefied aerosol away from internal passages to prevent leakage and malfunction.

An integrated sealing plug and fixing assembly seals multiple cables through a cabin wall, cutting space use and cost versus separate watertight joints.

An intermediate guide body keeps pump pistons aligned, reducing seal wear, liquid leakage, and efficiency loss from transverse forces.

A widened connection valley and linear end profile cut bellows end stress and create secure space for vibration damping rings.

Controlled nitriding of chromium stainless steel balances piston ring wear resistance and fatigue strength while avoiding brittle phases.

A coupled dual-piston pump alternates seal inflation and deflation to enable repeated object insertion and removal without seal damage or leakage.

A localized slipping stopper on the case fitting surface prevents bellows seal rotation, preserving long-term mechanical seal performance.

Toroidal TPU gaskets and shaped ring-nut seats keep flat-face quick couplings sealed against dust and water while preserving hydraulic performance.

A carbide and diamond-like carbon coated shaft forms a low-friction graphitic interface that cuts carbon seal wear and heating at high speed.

Unsymmetrical gasket ribs redistribute compression forces in plate heat exchangers to cut shear stress while maintaining sealing.

Spaced recessed parts and rib surfaces stabilize seal contact area, reducing sliding resistance while maintaining sealing across varying shaft gaps.

Temporary cyanoacrylate bonding holds seal shoes in position during tight-clearance assembly, preventing damage before burn-off at high temperature.

Independent inner and outer seal lips maintain sealing when internal pressure drops below ambient through adjustable contact pressure and shaped surfaces.

Dual seal lips and a reinforced flange keep groove contact stable, sealing both positive and negative pressure despite relaxed groove accuracy.