Engine Seals TRIZ Cases

Internal cavity in energizing ring deflects elastically to maintain radial preload on conical seal surfaces during thermal growth.

Annular beads on rectangular cross-section sealing elements reduce radial bulging and surface pressure to prevent pipe creep.

A flow inducing ring uses constant cross-section grooves to direct barrier fluid axially across the seal faces.

Segmented plate sections with spring-like edgings clamp onto insulation panels, preventing heat radiation and gas leakage while simplifying assembly.

A toothed retention ring expands radially inside a tubular rack housing to form a secure mechanical joint.

A gland packing uses twisted yarns of fibers with a flat ratio of 1.1 to 2 and surface recesses to retain impregnating material.

Radial notches prevent sticking on groove walls while static lip hinges relieve pressure buildup during rod retraction.

Coining depressions between bolt holes in a metal laminate gasket equalize compressing force, ensuring stable sealing despite weakened flange strength.

A sealing element incorporates a segmented wear indicator visible through an inspection window to monitor material loss during operation.

Single-piece plastic gates eliminate rivets and bearing bushes, resolving the complexity-reliability trade-off in turbomachine relief valves.

Groove sets direct lubricant flow across the seal interface to reduce friction, preventing overheating from high contact pressure.

A retractable seal segment uses a bypass passage to create a pressure cushion that maintains the minimum seal gap.

Azimuthal cavity variations generate complex vortices that increase pressure drop and reduce fluid leakage between moving surfaces.

A vehicular seal carrier system uses mechanical retention tabs and an encapsulation layer to join a fixed quarter glass with a movable window glass.

Concave-convex sections guide fluid from sealed regions to prevent leakage while maintaining lubricity across varying rotational speeds.

Vacuum dead volume absorbs leaking gases to prevent jacket deformation and explosive atmospheres.

An actuatable sealing mechanism uses a radially moveable activating member to compress an elastomeric seal within tubular members.

Nested fluid channels and segmented seals counteract centrifugal leakage while reducing axial space consumption in large-diameter rotary unions.

A flexible sealing apparatus with an annular body and radially extending arm provides uniform force to form a seal between surfaces.

Segmented sealing joints clamp window and carrier edges using reusable retaining means for tight fitting.

An angled bearing isolator seal redirects high velocity water spray through centrifugal effects, preventing ingress into the bearing cavity during washdowns.

A waterproof structure seals a fishing reel handle shaft bearing using an annular fixation plate and elastomer seal member.

A cylinder head gasket incorporates a closed-loop leak test bead and pressure supply path for pressurized quality inspection.

Reactive plastic material fills gaps in the frame part to fix the free section, preventing vibration and contamination during handling.

A rim seal system uses a rigid shoe to protect the flexible primary seal from tank wall friction.

A non-contact seal uses pneumatic pressure and spring force to drive a shoe against an opposed surface, creating a dynamic barrier.

Relocating the elastomeric seal to the tailgate eliminates friction wear while merging functions reduces manufacturing complexity.

Inner seal lip sound absorbing portion minimizes reflection amplification in the door glass gap without increasing weight or cost.

A gasket uses a bent resin film carrier to provide structural rigidity and shape retention for rubber sealing bodies.

Segmented grooves catch intruding particles at the joint and discharge them radially, preventing wear on dynamic pressure generation features.

A filter element mounting frame incorporates a channel to contain adhesive securing the media pack.

A spring strut bearing cap uses a two-component snap-on connection to join the guide ring.

Post-assembly sealant injection into grooved channels resolves dust-tight sealing challenges in complex sensor housings with undercuts.

Centrifugal force drives an elastic ring against the external shaft, eliminating friction-induced leaks and frequent replacements in turbomachines.

Segmented spline connectors seal radial and axial gaps between shroud and nozzle segments, reducing cooling air leakage.

Segmented leaf spring elements accommodate exhaust nozzle sidewall splaying, reducing core gas leakage.

Segmented downcomer zones with inclined baffles reduce inlet pinching and maintain active area for improved vapor-liquid mass transfer.

Segmented frustoconical sections connected by a hinge joint resolve wear resistance and flexibility trade-offs in gas turbine engines.

Triangular groove on cartilage back portion absorbs axial deformation from pump housing force, maintaining assembling length and seal performance.

A shape memory alloy spacer adjusts compression force on mechanical seals to reduce startup friction.

Integrated seal profiles with U-shaped and L-shaped elements resolve weatherproofing gaps between removable roof panels and rollover hoops.

Internal cavities in the sealing layer conform to non-uniform flange profiles, preventing displacement during thermal cycling.

A bearing compartment runner uses passive oil mist cooling to manage heat.

Mating protrusions on the energizing ring engage grooves in the retainer nut to prevent upward movement under high pressure.

Segmenting the second polyurethane layer and allowing partial curing prevents interface cracks while maintaining mechanical strength.

A railcar anti-rolling device uses a protruding portion to protect oil sealing members during axial bearing displacement.

An adjustable movable seal ring uses fluid pressure to control radial position and maintain a consistent gap between fins and the opposing surface.

Flanges with fasteners energize threaded tubular connections through friction, eliminating high-torque device requirements.