Engine Seals TRIZ Cases

Circumferential seal system with segmented groove sets generates hydrodynamic lifting force to maintain a thin fluid film between the seal ring and runner.

Compliant seal system adapts to shot-peened shaft irregularities, preventing oil leakage at high temperatures.

A contracting secondary ring seal assembly restricts fluid flow using air pressure differentials across the sealing surface.

A serrated core gasket with a deformable pillow generates high sealing stress to prevent fluid leakage.

Segmented gas lips create an oil pocket that decouples pressure from the primary seal, reducing friction and extending service life under high loads.

A sealing device uses a spring preload and polymer pressure to bias the seal against a slide plate in a filtration apparatus.

A door weather strip uses a continuous seal bead extending across the base bottom part to prevent water entry despite core removal slits.

A pivoting support assembly device guides pressure rollers along vehicle flanges to maintain consistent contact pressure during seal fastening.

A rubber coating agent combines cellulose derivatives with isocyanate polybutadiene to form a durable, flexible protective film.

Curved vent hole segments deform the seal ring smoothly, resolving assembly complexity in automotive housings.

A weatherstrip with a 35-degree attachment angle provides universal sealing for lifting and lateral opening back doors.

A rotary actuator incorporates a labyrinth forming portion to create a tortuous path that limits water intrusion into the electric motor case.

Circumferential grooves in opposing seal segments lower sliding torque and grease loss while maintaining stable sealing performance at high speeds.

Pleated side members compress under movement to prevent water, air, and light leakage across varying gap tolerances.

A carbon seal assembly uses a variable cross-section to reduce wear on the seal runner.

Breakable core threads in composite tethers allow outer layers to unravel, preventing longitudinal contraction of side curtain airbags.

Elastic seal prevents particle entry while reducing axial dimension and maintenance needs.

Deformable c-seal shields primary w-seal from thermal exposure and pressure differential, extending durability while maintaining blade tip clearance.

An expandable ring seal within a universal nozzle engages the sand box fill pipe to prevent silica dust release and protect personnel from respiratory hazards.

A shaft seal mechanism uses a tapered low-pressure-side gap to maintain pressure distribution across thin plates.

A mechanical seal uses a recess and locking element to secure the stationary member without threads.

Axially split pump housing uses cord-shaped and annular sealing elements to create a reliable seal between the lower part and cover.

Nested cooling passages route fluid through the seal runner body to dissipate friction heat without increasing radial thickness or system complexity.

Spring-mounted shoes in a hybrid seal dynamically adjust radial clearance, reducing leakage and wear while preventing heat generation from rotor contact.

Segmenting primary and backup seals prevents thermal deterioration from increasing flow consumption while maintaining reliability.

A metal seal ring uses a harder main section to support softer contact surfaces that yield against facing sealing surfaces.

Nanostructured seal surfaces resist iron oxide clogging via electrostatic repulsion, maintaining controlled leakage rates in primary circuit pumps.

An asymmetric gasket design adjusts upper and lower step heights to counteract non-uniform surface pressure distribution caused by uneven reaction forces.

A positioning device constrains a sensor wheel within preset angular ranges during assembly, eliminating manual calibration errors.

Eccentric coupling rotates to reposition the sliding roof lever, enabling precise cover height adaptation without disassembly.

A bimetallic static gasket joins a functional sealing layer to a structural carrier layer via peripheral welding.

A strip seal with a sinusoidal curvilinear pressure face constrains movement across multiple contact points.

Non-planar piston surface creates flow passages that move residual product through the valve interface during dispensing cycles.

A lip seal uses controlled surface roughness and specific filler composition to prevent softening, swelling, and deposit formation in water pumps.

Convex sections on the seal ring reduce assembly friction while maintaining effective sealing against working fluid leakage.

A double-shoulder serrated metal gasket design increases electrical resistance through specific material thickness ratios.

A slotted wedge-shaped extrusion ring assembly expands radially to span large sealing gaps while maintaining structural integrity under pressure.

Asymmetric reverse trapezoidal grooves maintain film stiffness and prevent face contact during pressure reversals in bidirectional mechanical seals.

An integrated retainer in the resin front frame eliminates separate fixing steps, reducing part count and production costs.

Divergent flow grooves create symmetric pressure fields across piston rings to balance radial forces.

A segmented sealing joint decouples sliding and fastening functions in liquid metering devices to reduce activation force.

Hydraulic pressure applies segmented seals to clearances between the top cover and housing, enabling operation beyond 160 kg/cm² without leakage.

Twist lock mechanism secures carbon ring seal while flexible spring pins allow resilient deflection for non-contact gas film sealing.

Rolling introduces compressive stresses into piston ring edges, boosting fatigue strength by 30% while preventing crack propagation under alternating loads.

An adhesive elastomer layer bonds to housing parts on an intermediate plate, compensating for structural deformations without friction damage.

Disposable plastic guide sleeves prevent flexible sealing lip rolling and ensure correct installation direction without steel cone wear.

Fluid-actuated prestressing element adjusts seal contact pressure dynamically to optimize sealing performance across varying operating conditions.

Periodic grating structures reduce friction and stabilize temperature in mechanical seals while minimizing fluid leakage.

Nested labyrinth structures and deflectors prevent oil leaks in bearing housings while maintaining API Standard 610 compliance.

Pre-installed O-ring seals on casing strings prevent downward displacement during cementing, reducing drillrig time and improving reliability.