Engine Seals TRIZ Cases

Point light sources built into a protected door seal illuminate the window directly, improving uniformity while limiting pollution exposure.

A sliding layer between the flange and seal prevents peeling, rupture, and deformation during tightening while maintaining reliable sealing.

A coated plate between ring assemblies prevents direct metal contact, cutting seal wear and heat to extend service life and reduce downtime.

A shaft-mounted discharge seal uses multi-zone electrical contact and lubricant retention to dissipate motor-induced currents and protect bearings.

A base stiffener helps a filter press sealing strip resist deformation, seal reliably without adhesive, and shorten replacement and cycle time.

Increasing groove curvature along the flow path enables low-speed pumping, sealing, and lubrication while reducing fluid inflow loss.

Bite rings, head gasket grooves, and vent passages contain combustion gas leakage at the cylinder head joint and protect nearby components.

Electrical resistance in a recessed conductive measuring area tracks slide ring wear continuously, helping prevent seal leakage and unplanned failure.

A coalescing inner media and hydrophobic outlet screen remove residual water from fuel while fitting existing filter elements.

Targeted grease points on sealing and dust lips improve shaft seal lubrication while minimizing grease leakage and contamination.

A curved inner seal lip separates from the rod at higher pressure to cut frictional heating while preserving sealing in high-speed operation.

A dual-seal shaft interface with drain channels isolates fluidic loads from the motor, preventing ingress and enabling smaller, lighter dry motors.

Vibration-based simulation predicts piston compressor seal wear and remaining life without added leakage sensors, reducing downtime and replacements.

A tuned plasticizer and cold-resistant acrylic rubber keep seals flexible after oil exposure, helping prevent low-temperature leakage.

A segmented annular seal stack uses spacers and multiple seals to maintain pump sealing through cryogenic temperatures and pressure changes.

An elastic seal pressed radially outward keeps the housing-impeller gap small, limiting leakage currents and wear across compressor operating states.

Inverted inner and outer diameter tolerances let the backup ring fit the seal groove without gaps, preventing O-ring breakage in high-pressure gas seals.

Protrusions and matching indentations hold the sealing gasket in place, cutting vacuum pump leakage while allowing easier fitting and movement.

Three-stage pressure sensing uses the piston rod outer surface and housing wall to detect position while keeping cylinder assemblies compact.

Flexible segmented sealing creates a tortuous airflow path to block hot, corrosive gas intrusion despite radial and axial displacement.

Integrated return flow paths redirect ultra-high-pressure seal leakage back to the discharge path, reducing external leaks and seal complexity.

Oblique contact ramps let an internally clamping rectangular seal slide and align during prestressing, simplifying groove insertion in either orientation.

A flexible solid plate absorbs shaft axial and radial movement in a stuffing box, reducing leakage and simplifying installation.

A surface coating of antiozonant and silicone oil protects rolling bearing seals from ozone while preserving heat resistance, metal adhesion, and feed reliability.

A hooked protrusion and internal seal layout keeps coupling fittings sealed under negative pressure while staying compatible with standard fittings.

Direct fluid injection into a double-wall rotary body cools seal sliding surfaces with less structural complexity and longer seal life.

Axial jack screws and threaded inserts push a force-fit bearing or bushing from a stuffing box without damaging the seal body or flange.

A stem-and-sleeve plug uses interference fit and a weakened break point to seal holes with lower installation force and less sleeve damage.

Curved groove edges smooth fluid flow in sliding components, discharging contamination to reduce abrasive wear and maintain lubrication.

Radial groove channels balance piston seal ring leakage to reduce thermal hotspots, distortion, and sealing loss in rotating machinery.

Optimized helical rib height on a seal lip maintains pumping action and blocks liquid leakage during high-speed reverse rotation.

Fluororesin-coated fluororubber seal lips cut friction, heat, and torque while preventing oil leakage on high-speed rotary shafts.

A rounded heater fixing surface and sealing member redirect liquefied aerosol away from internal passages to prevent device failure.

An elastomer seal on the gasket's inner edge improves leak resistance and durability while using less sealing material.

Screw projections pump leaked fluid back in forward rotation, while a weir stores and blocks leakage during reverse rotation.

Uniformly dispersed columnar graphite in a silicon carbide seal improves lubricity, hardness, and wear resistance for longer service life.

Grooved sealing rings with O-rings, springs, and compression control cut drilling joint wear while maintaining sealing and lubrication.

A separate conductive seal lip creates a shaft-to-housing path that cuts electromagnetic noise and electrical erosion without redesigning the seal.

Movable flush connectors let an agitator seal cartridge slide in axially, cutting hose-handling time while preserving seal flushing and serviceability.

A hollow O-ring cross-section uses gland-based inner diameter sizing to handle thermal expansion above 350°F without enlarging turbine gland space.

Asymmetric tapered groove surfaces keep a resin gasket pressed outward, limiting creep- and cold-shrinkage gaps in high-pressure seals.

A metal mesh annular pump seal conducts heat into surrounding components, lowering seal temperature, wear, leakage, and maintenance.

A stepped seal face wears through staged contact areas to adapt balance ratio, cutting leakage and wear in turbomachinery.

Steps in recessed strip portions retain fine wear products, speeding transfer layer formation and improving sliding surface lubricity.

A ground abrasion-resistant coating on graphite maintains flatness and roughness for reliable sealing and wear resistance at elevated temperatures.

Preinstalled dual gaskets and a gutter channel seal panel joints without exterior sealant work, cutting cure time, cost, and height risk.

A three-ring seal uses spring-loaded side rings and a compressed main ring to maintain shaft sealing despite wear without uneven readjustment.

A wrapped or heat-shrink coating fills metal insert surface defects to block leak paths while cutting seal application time and hazards.

Concentric fixtures and pilot rings enable nose-to-nose swivel seals that cut groove wear, reduce leakage, and extend seal life.

A lock ring, interlocking hubs, and an elastic torsion member speed plug installation while maintaining seals under pressure and thermal expansion.

A dynamic seal anchored by bayonet coupling keeps water and contaminants out of shaft bearing supports while reducing misalignment damage.

An inflatable seal in the robot joint gap raises pressure during wash-down and relaxes during motion to limit wear and block contamination.

A bent annular seal and tapered chuck let a driveline pass larger connector portions while maintaining compact, airtight fixing.

A sealed spiral reservoir uses capillary flow to feed the atomizer, cut residual e-liquid waste, and limit nicotine oxidation.

A flat sealing strip and elastic helical strip keep split housing parts easy to assemble while maintaining a tight seal under pressure changes.

A soft insert or wave spring supports the pin nose to limit hoop deflection, prevent yielding, and improve oilfield tubular sealing under pressure.

Hydrostatic pressure and angled seal shoes maintain a stable clearance gap in gas turbines, reducing leakage, deflection, and shoe travel.

An indicator pin and sensor track radial segment movement to measure compressor packing ring wear and avoid leakage-driven downtime.

A pressure-energized secondary seal rotates a thermoplastic ring to form a chamfer that maintains contact stress through thermal cycling.

An elastic torsion member and interlocking lock ring let heat exchanger closures absorb thermal expansion, maintain sealing, and install without jigs.

A recirculating cooled fluid path protects hot-media mechanical seal rings without a separate barrier circuit, cutting complexity and energy use.

An adjusting screw and bayonet mechanism compensates floating seal wear gaps to prevent oil leakage, dry grinding, and early rubber ring aging.

A flexible pipe seal uses roughened adhesive surfaces and elastic fit to seal varied pipe shapes while preventing leaks and delamination.

A low-silicon DLC sealing face blocks silicate buildup in mechanical seals, preserving smoothness, fluid lubrication, and leak resistance.

Absorbent sleeves in blade root fasteners capture liquid ingress, protecting preload and fatigue life in wind turbine hub connections.

A radially expanding lock ring secures the plug without threaded fasteners, improving sealing under pressure and load cycling.

Bellows spring force lets a slide ring seal tolerate sealing-surface waviness, reducing rework while maintaining reliable sealing.

A slide bearing inside the seal limits rotary shaft eccentricity, while a flat spring preserves sealing pressure despite resin creep.

Extruded and machined elastomer seal elements fill grooves completely to create crevice-free seals while cutting molding time and cost.

An actuated fluid seal and permeable injection shaft place liquid shim precisely through a bore, avoiding confined-space access and excess material.

Annular grooves on a side lip retain lubricant and balance flow, reducing wear, noise, and mud water entry in sealing contact.

Separate shroud air passages cool the gas path surface and purge front-end gas intrusion, cutting cooling air use and improving vane durability.

A compressible toilet seal with a flexible sleeve adapts to flange height and diameter variation while giving tactile feedback for leak-safe installation.

A purge gap and purging compound eject trapped debris from a harvester clutch, reducing wear, friction, and seal damage.

Overlapping sealing elements and side springs help a compressor ring insert easily, stay seated, and maintain sealing under thermal stress.

Discontinuous WRB attachment creates drainage paths and resealable flaps that preserve sealing at mate lines without repeated sheet damage.

A dual-fluorine fluoroelastomer blend shortens mixing time and improves sheeting while preserving sealing hardness, strength, elongation, and plasma resistance.

Blind surface depressions raise local contact pressure so metal seals conform to defects, cut compressive force, and limit flange damage.

A rotating insert and staged seal alignment expose leakage when unlocked, then close the path after locking for secure high-force media line assembly.

Nested split-rings with integral clips improve gas turbine seal assembly, resist thermal-expansion buckling, and reduce heat transfer.

Holders around the rotary shaft absorb adapter torque, preventing bolt loosening and preserving mechanical seal fixation and sealing.

A multi-section scraper ring channels scraped oil through inner grooves and drainage openings to cut leakage, ring count, and rod damage.

A canvas-rubber hinge plate lets the auger cover flex under grain flow, limiting ejection losses while avoiding back-pressure and return failure.

A multi-metal rotor tip seal changes height with temperature to cut turbomachine tip leakage while limiting rubbing and wear.

A non-contact conveying seal returns leaked lubricant into a mobile tool drive unit, cutting friction, heat, wear, and maintenance.

A grease ring beside the seal lip spreads lubricant evenly during installation, preventing false air leak failures in shaft seals.

A fluoropolymer layer reinforces the seal lip to cut friction, resist stress relaxation, and maintain leak-tight sealing under higher pressure.

A washer-like spring keeps radial prestress constant across diameters and orientations, improving sealing contact and easing assembly.

Mechanical clamping fixes a sealing element in a channel to permanently separate different fluids in MEMS sensors, even in tight spaces.

Closure flaps let crews reopen mate lines during construction without damaging the WRB sheet, then reseal for weatherization.

A dual-gap sealing layout diverts creeping dough into a clearance space, keeping kneading shaft seals and bearings cleaner and protected.

By moving the biasing member outside the stationary seal ring, this case cuts axial length while preserving sealing contact and torque restraint.

Concentric sealing rings and a pushing plate keep pipe joints tight and self-cleaning despite misalignment and sticky sludge.

A tandem dry gas seal uses clean separation gas flow reversal to block methane leakage from centrifugal compressors without major seal replacement.

A wear-triggered arrester halts face seal wear at a set threshold, creates a close-clearance butt gap, and helps prevent oil containment failures.

An inclined inner-ring surface and stiffened seal neck help rolling bearings resist centrifugal lip deformation and maintain sealing at high speed.

Radial support for the sealing element lowers assembly force and torque in air dryer cartridges while preserving reliable sealing.

A retaining protrusion and compressed sealing lip keep the nacelle seal secure without glue, cutting replacement time and downtime.

A clamping ring and prestressed sealing rib help small-diameter shaft seals cut leakage and friction while compensating axial movement.

A spring-energized metal and non-metal seal assembly maintains contact under high pressure, high heat, and thermal cycling to prevent fluid leakage.

A flange notch traps excess FIPG near the sensor connector, reducing gasket protrusion, connection failure, and assembly delay.

A grooved waterproof membrane and annular ridge seal sheath openings against rain while allowing repeated pipe maintenance access.

By integrating seal support into the stator, this hydrostatic non-contact seal cuts radial height and part count while maintaining sealing performance.

A toothed seal shoe adds lift force to overcome friction lock-up, maintain clearance, and avoid rotor contact during maneuvers.

A radial anti-rotation lock stops seal element rotation while allowing axial movement, reducing stationary wear and maintaining sealing contact.

A compressible mesh on the wastegate plug seals against the divider wall to cut scroll-to-scroll exhaust leakage and preserve turbocharger torque.

Pressurized annular seals and a hydraulic pre-chamber keep offshore gear motors watertight at depth, blocking particles and seal wear.

Stepped hydrodynamic grooves redirect outward and lateral flow to keep the piston ring separated, reducing wear in intershaft seals.

Blower-induced counter pressure strengthens a non-contact labyrinth shaft seal, cutting engine fluid leakage without adding shaft wear.

Bolted retainers, removable stuffing box sleeves, and stainless steel help this fluid end reduce thread cracking, leakage, and wear.

Flexible members and an annular sleeve support a ceramic seal runner, easing edge loading, wear, and thermal expansion stress.

A weakened non-sealing sheet region is stretched to reach the final gasket contour, cutting punching waste and material cost while preserving sealing.

A pre-compressed self-expanding seal uses releasable retainers to ease joint insertion while maintaining leaktightness under movement.

An L-shaped yoke and magnet hold magnetic fluid, trap particulates, and protect vacuum quality in rolling bearings.

A PTFE-filled jacket and energizing element maintain sealing integrity at 350°C over long exposure while limiting leakage and material degradation.

Bypass passages and pressure-reduction seals cut oil leakage in high-pressure, high-speed planetary gear lubrication.

Dynamic actuation adjusts seal contact force to protect gas turbine bearing seals from friction and heat when lubricant flow is interrupted.

An actively flushed recess between two seals blocks oxygen ingress in gear pumps while cutting nitrogen use and enabling leak detection.

A pre-assembled U-shaped joint and linear seal simplify intake manifold heat exchanger mounting while maintaining airtight sealing under thermal expansion.

A flexible carrier arm lets a hydrostatic seal maintain gap control during thermal growth, reducing leakage and stress in gas turbine engines.

A high-pressure-side flow element drives flushing at the sealing zone to cool, lubricate, and remove carbon deposits that shorten seal life.

Rotating fluid through a stepped slinger creates a high-pressure vapor barrier that limits turbopump leakage and condensate escape.

Reactive slurry forms inward and outward diffusion coatings, solving non-uniform thickness limits in gas turbine seals.

Nested plunger stopper limits movement within cylinder hole, preventing exposure and damage to the slide surface during assembly.

Non-circular annular seal prevents displacement during insertion, maintaining stability and reducing leak risks in press-fit pipe joints.