Engine Seals TRIZ Cases

A formed metal clip supports the brush seal base to resist high-velocity cooling air, preserving seal geometry and durability.

A retractable seal retainer prepositions seals in cramped flow control assemblies, enabling hermetic sealing with faster field servicing.

Pre-assembled sensors, a common cable harness, and a multi-pole plug simplify mechanical seal installation and protect connections in explosive areas.

A multi-layer ceramic edge seal with laser heating reduces thermal stress, glass de-tempering, and hermeticity failures in vacuum insulated panels.

Variable or omitted welting lets an aircraft gap sealing strip follow curved control surfaces more closely, cutting parasitic drag.

An integrated vane pump forces barrier fluid through a double mechanical seal cartridge to prevent overheating at low mixer shaft speeds.

Movable retention assemblies center the crusher seal ring from outside the housing, avoiding under-shaft manual alignment during installation.

A movable sealing ring lets biogas agitator mechanical seals be replaced in place, cutting disassembly time and limiting gas leakage.

A protruding chevron seal and reinforcing ring reduce lip deformation during shaft insertion, keeping the gasket on the intended seal surface.

Radially oriented tabs let this annular seal compensate for axial tolerances and misalignment while reducing leakage and wear.

An integrated conductive lip and protective ring ground the rotating shaft to suppress EMI noise and electrolytic corrosion without a separate brush.

A tapered backup ring maintains line contact under pressure and shaft eccentricity, preventing seal-ring protrusion and leakage.

A dual-seal transfer tube assembly uses a heat-expanding secondary seal to stop leakage and fire spread when engine temperatures exceed 800°F.

Pressure-energized radial and axial sealing lips enable bi-directional sealing under internal and external pressure with lower energization force.

Controlled multi-layer seal thickness and laser heating reduce glass de-tempering while preserving hermeticity in vacuum insulated panels.

Rigid bushings in the gasket limit screw-driven seal compression, reducing creep, preserving watertight sealing, and avoiding retightening.

Guide-pin alignment, sealing strips, and water collection help split wind tower sections assemble accurately and block water ingress.

Segmented protrusions and grooves feed fluid across the sliding surface, improving low-speed lubrication while maintaining dynamic-pressure sealing.

A bellows-like seal body lets a shaft move radially and axially while preserving the wall seal against fluid, dust, and particulates.

Coined pumping impressions return leaked fluid during rotation, while a smooth static band helps the PTFE shaft seal hold fluid when idle.

Guided seal carrier and intermediate member simplify alignment and fixation of rib opening seals in assembled aircraft fuel tanks.

Localized reinforcement and an axial spring stop reduce sealing lip wear, friction, and pressure imbalance in high-pressure shaft seals.

A bendable second seal cuts radial reaction force in a rotor sealing structure, improving assembly ease and rotor slidability.

TPV extrusion and non-migratory slip agents keep appliance door gaskets sealable, low-friction, and easier to modify than thermoset rubber.

Blending -OCF3 and nitrile rubber improves R744 seal durability, cuts leakage, and maintains mechanical properties across extreme temperatures.

A multi-part seal uses a plug-in groove, inclined abutting surface, and deformation groove to stop water leakage at the slush cylinder joint.

Integrated cooling and lubricating conduits made by additive manufacturing cut piston rod heating, simplify machining, and avoid coolant leakage.

An elastomeric ring relieves pressure between annular seal areas, limiting differential buildup that causes premature rotary seal failure.

A divergent inner guide surface and lip seal improve liquid-gas separation in aircraft powerplant deaerators while reducing leakage.

Asymmetric branch grooves route more barrier fluid to the sealed side, balancing sliding-surface separation while limiting leakage.

A curved low-pressure groove lets the backup ring rotate without opening gaps, protecting the O-ring from deformation and cracks under high pressure.

A mechanically captured seal spacer separates and aligns two seal members to reduce leakage and simplify fluid coupling assembly.

Modular concrete blocks are sealed with buoyancy chambers and packings, then joined by concrete columns to avoid heavy barge-based offshore assembly.

High-pressure fluid routed through feed slots and annular grooves offsets seal closing force, cutting heat, friction, and wear.

A bypass groove recovers fluid from the leakage side of a mechanical seal, cutting sealed-fluid loss while keeping sliding surfaces stably separated.

A staged automated line combines molded vulcanization, flash removal, and online inspection to produce multiple rubber seal ring specifications.

Axially spaced spring elements hold seal shoes in a non-contact seal assembly, cutting frictional heat while maintaining sealing in rotating equipment.

An expanding diffuser surface reshapes pressure distribution in non-contact seal shoes to reduce flutter, leakage, and seal instability.

Temperature and pressure sensing tracks packing case seal degradation, enabling condition-based maintenance before leakage or failure.

A deformable support section engages a housing recess during assembly to stop seal shift, prevent leaks, and protect transmission components.

A flexible joint and pin-guided hole let large folded gaskets deform for easy positioning while maintaining stable sealing without mounting grooves.

A flexible non-contact annular lip flexes under wash pressure to block detergent ingress while preserving bearing lubrication and low friction.

A hinged gasket with a sloped compression surface seals varied drain shoe diameters with one part, reducing extra seals and fit issues.

Deep and shallow seal grooves recover and spread sealed fluid across sliding surfaces, improving lubricity while limiting leakage.

A self-supporting thermoplastic vapor seal panel integrates reinforcement and seals to cut aircraft installation time and operator strain.

Dynamic elastomer seals on the bearing unit block wash fluids and contaminants while tolerating shaft misalignment in food applications.

A detachable sealing block lets waterproofness test pads for semi-finished products stay in use longer by replacing only the worn hole-sealing part.

Chamfered seal shoe corners and spring-loaded movement maintain non-contact sealing in rotating equipment while reducing wear and leakage.

A one-piece thermoplastic vapour seal panel integrates ribs and seals to cut aircraft installation time while maintaining sealing and heat protection.

A flexible cantilevered seal arm maintains sealing across misaligned rotating structures, reducing annular gap leakage in aircraft geartrains.

A nested retainer sleeve and lip secure the seal element in less space while lowering internal stress and preventing rotation.

A flexible skirt seal simplifies pipe-through-wall installation by avoiding crimping while diverting fluid and keeping the space under the skirt watertight.

A spring-loaded rotating seal adapts to radial gap changes and centrifugal loading to cut compressor leakage and hold pressure separation.

Multi-stepped recesses generate dynamic pressure and fluid supply to cut torque while limiting leakage in high-pressure sliding seals.

A pumping ring regulates grease pressure and exchange at the seal lip to cut frictional heat, wear, and grease buildup in large bearings.

A dual brush-and-hard seal uses bypass cooling channels to limit combustor-to-vane leakage while preventing hot spots and bow wave distress.

Pressure-energized metal C-seals in a removable cartridge keep subsea hydraulic couplings tight under hydrostatic pressure and misalignment.

Inclined rib sidewalls guide debris out of seal-ring recesses, preserving sealing performance and reducing abrasion in soft housings.

A C-shaped pulley element and protruding inner ring form a compact labyrinth seal that blocks contamination and extends tensioner roller bearing life.

A separate cylinder with high-friction faces or interlocking protrusions stabilizes the sleeve joint during drive-up to prevent seal tilt and oil leakage.

A wave-form split ring enables lighter interference fit in a carbon face seal, reducing heat, stress, wear, and vibration-driven displacement.

Dual axial sealing units keep pressure above ambient around the shaft to block air intrusion and protect waste heat recovery efficiency.

A C-shaped pulley and protruding inner ring form a compact labyrinth seal that blocks contamination and helps extend bearing service life.

Dual internal cooling passages cut thermal load on bearing and seal areas in high-temperature roll bearing boxes, preventing failure and seal hardening.

Multi-axis stepped grooves redirect radial and lateral flow to stiffen the thin film between runner and seal ring, limiting fluid migration.

Variable-height and width bead profiles give a single-layer engine gasket both sealing stiffness and recovery to resist fatigue, motion, and leakage.

A series check valve and backflow control valve limit reverse flow, protect the compressor body, and reveal valve failure via motor signals.

A circumferential protrusion in a resin valve seal ring maintains groove contact and surface pressure despite molding-induced flatness loss.

A jagged stainless steel ring coated with expanded graphite creates a monolithic double-barrier seal that simplifies installation and supports monitoring.

Elliptical seal-surface cavities build a hydrostatic lubricating film that cuts friction while resisting scratches, particles, and leaks.

A dual-material tapered sensor connection forms a double ring seal that removes dead spaces and improves hygienic sealing in filling lines.

An insert-molded hard-soft sealing structure keeps seal position under hydraulic pressure to prevent abrasion, oil leaks, and sealing loss.

Additional air-side return elements create pressure chambers that pump leakage medium back, improving bidirectional sealing at very high shaft speeds.

A lattice support cage replaces hard-to-clean seal grooves, enabling CIP cleaning and easy inflatable seal handling between container chambers.

Using the same carbon material on both seal faces avoids break-in friction, reducing wear, heat, and thermal damage in turbine bearing seals.

Distinct oleophilic and oleophobic bristle groups control oil migration in rotating-machine seals while improving air and oil tightness.

Separated seal cavities use lubricant pressure to vary local preload, reducing leakage and wear in rolling stand annular gaps.

Molded-in plastic compression limiters replace sintered metal parts, removing corrosion treatment and adhesive steps while maintaining sealing.

Non-metallic fluoropolymer inserts help composite gaskets seal FRP flanges under low bolt load while resisting acid attack and corrosion.

Magnetically held particles span changing rotor-stator clearances to restrict leakage during thermal transients and reduce rub risk.

Angled spring seals deflect inward during intershaft movement, limiting wear and fatigue while maintaining engine bearing compartment sealing.

A tang-and-slot retained seal cartridge prevents lubricant mixing between gearbox and accessory oil systems while easing maintenance.

Grooved deformable packings and a smooth diaphragm sealing region prevent internal liquid leakage without compromising differential pressure sensing.

Embedded magnets pull responsive brush filaments across turbomachine clearances to limit leakage while lowering rub risk during transients.

Curved or spherical seal segment joints maintain contact under misalignment and thermal distortion, reducing leakage around turbine shafts.

Raised side protrusions cut gasket-to-gasket contact during lubrication, preventing sticking, assembly stoppages, and syringe evaporation issues.

Mechanical gasket recesses lock onto the connector substrate to simplify assembly, cut sealing cost, and reduce corrosion risk.

Magnetic repulsion levitates the compressor seal near the motor shaft, cutting radial clearance and gas leakage without contact damage.

A segmented seal on the pylon fairing retains liquid below a set level while keeping airflow beneath removable panels.

Pressurized air in a circular sealing cavity blocks debris and liquid ingress at Axis 1, protecting robot joint internals with a simple seal.

Pressurized air chambers and intermediate leakage tanks keep an underwater propeller shaft sealed while draining collected liquid without pod access.

A radially moving support plate expands seal contact area to cut wear and friction while raising shoe natural frequency to avoid vibration.

A wave spring and anti-rotation carrier cut seal contact load, heat generation, and wear in compact high-speed rotary sealing.

Circumferential gas cavities and axial openings boost turbulence and pressure drops, improving turbomachine sealing with fewer lips.

Fine spiral grooves on the slinger suppress static leakage while keeping shaft sliding resistance low in sealing apparatuses.

Dovetail grooves force weather seals to be installed before glass insertion, while a prying surface helps remove stuck taper plates safely.

A cammed multi-ring scraper assembly boosts plunger sealing and clears abrasive debris to reduce wear and packing downtime in reciprocating pumps.

Pressure-balancing passages in a tangentially cut seal ring reduce rod force and wear, extending seal life in high-pressure compressors.

A protruding insert with mechanical posts seals body holes, blocks ink and solvent buildup, and avoids adhesive delamination in flexographic end seals.

Controlled Cr-Ni austenitic steel and a hard overlay help propane gas valves resist coking and thermal stress for longer service life.