Abstract: A system for sealing a joint gap between structural substrate panels such as walls, ceiling and floors making use of a sealing member including a mounting section fixedly secured to one of the surfaces and a covering member extending outwardly therefrom into contact with the other substrate member. These walls, ceilings and floors can be movable relative to one another and thus the present invention provides a mechanism for sealing the joint gap between the substrates while allowing them to move with respect to one another. This is achieved by fixedly securing the sealing member to one of the substrates and urging it into abutting engagement with respect to the other substrate.

Abstract: A seal arrangement for reducing the seal gaps within a rotary flow machine, preferably an axial turbomachine, has rotor blades and guide vanes, which are respectively arranged in at least one rotor blade row and guide vane row and have respective blade/vane roots (2,3) which protrude into fastening contours within the rotor blade and guide vane rows. A sealing element (4) of plastically deformable material is provided between at least two adjacent blade/vane roots (2,3) along a rotor blade row or guide vane row or between a blade/vane root (2,3) of a rotor blade or guide vane and a rotary flow machine component directly adjoining the blade/vane root.

Abstract: It is disclosed a seal assembly (5) which comprises a layered structure. It consists of a first layer (9, 12) of a base material, a second layer (10) of thermal insulating material on top of the base material and a third layer (11, 12) of base material or an oxide resistant material on top of the second layer (10) of thermal insulation. The inventive seal assembly (5) described herein can be arranged between combustor liner segments (2).

Abstract: A turboshaft engine, such as for example a turbine, including a segmented seal between two longitudinally adjacent elements such as, for example, a casing and a ring of sectors of vanes. According to one embodiment, a seal is interposed between a casing and a ring of sectors of vanes and includes a plurality of flexible segments having a straight deformation zone and a straight fluid-tight bearing zone.

Abstract: A high expansion packer or bridge plug is described. It features an external portion of a soft material that flows into spiral exterior leak paths formed when the sealing element is subjected to longitudinal compression. Preferably, the sealing element is an elastomer such as cured rubber, while the outer material is a soft uncured or somewhat cured rubber. The outer covering may itself be covered for protection when running in with such protective covering breaking or otherwise getting out of the way during the element compression process. As a result of compression, the soft material occupies the exterior helical or other leak paths for a sufficient length along the sealing element to withstand high differential pressures, without leakage.

Abstract: A gasket for fuel cells and a fabrication method of the same have two or more rubber powders having different hardness are coated onto a rigid substrate together with a liquid rubber, for example by a spray method, for thereby implementing a repulsive elastic property of a rubber coated portion and a sealing property. The cell intervals are constantly maintained by using a rigid plate as a spacer. Since a rigid frame provides a consistent distance during stack manufacture and engagement, stack workability and productivity are enhanced.

Abstract: A seal has a non-woven fabric folded along lines transverse to the opposite side of the seal and secured by adhesive to fabric strips. The non-woven fabric forms elongated cells with a plurality of the cells receiving inserts to increase seal stiffness. By securing one of these strips to a stationary component of the sealing surfaces, the opposite strip may expand or collapse relative to a movable sealing surface to accommodate excursions of that surface. Multiple layers of cells may be provided in the seals. The inserts may have various cross-sectional configurations including circular, triangular or rhombic and formed of tubes, solid rods or coiled springs.

Abstract: A metal laminate gasket with a hole to be sealed includes a base metal plate having a first hole corresponding to the hole to be sealed, and a first steel plate laminated on one side of the base metal plate and having a second hole with a diameter greater than that of the first hole. The second hole has an inner surface and is aligned with the first hole when the base metal plate and the first steel plate are laminated. A coating layer is deposited on the first steel plate and has a portion deposited on the inner surface of the second hole.

Abstract: An improved turbine spring clip seal for directing gases to be mixed with fuel in a combustor basket. The turbine spring clip seal is composed of inner and outer housings and a center sealing member disposed between the inner and outer housings. The center sealing member is flexible and prevents a fluid, such as air, from leaking through the seal. In operation, the center sealing member flexes and is sealed against the outer housing by a pressure differential that is created by the relatively higher pressure on the inner housing side and the relatively lower pressure on the outer housing side.

Abstract: A film-integrated gasket comprising a resin film and an adhesive rubber layer directly molded on the resin film. The adhesive rubber layer is molded from addition reaction type silicone rubber. The adhesive rubber layer can have a reduced thickness and can prevent positional alignment failure, making it suitable for a thin seal that can be used in a fuel cell, a secondary battery, a condenser, etc. without contamination of electrolytic solution, catalyst, etc. used in the cells.

Abstract: A compound sheet gasket which exhibits superior sealing durability to fretting is provided. The compound sheet gasket is mounted between a housing and a cover provided at an opening of the housing, and the friction coefficient of any one surface of a front surface adhered to the housing by the flexibility thereof and a rear surface adhered to the cover by the flexibility thereof, is set to be 1.15 times or more that of the other.

Abstract: A dryer seal. The seal is formed from an elongate multi-layer structure having a strip of fibrous material folded upon itself to establish a folded perimeter edge and a pair of outwardly projecting portions projecting away from the folded perimeter edge. A fibrous interior spacer layer is located between the outwardly projecting portions and a single attachment seam extends at an inboard location substantially parallel to said folded perimeter edge.

Abstract: A gasket is adapted to seal between a first member and a second member, and includes a first portion a second portion. The first portion includes a first elastomeric seal portion adapted to be in sealing engagement with the first member. The first portion may also include a clip or a coil spring contained within an elastomeric portion in order to provide a sealing force against the first member. The second portion is preferably molded integral with the first portion and includes a second elastomeric seal portion having a coil spring contained therein. The second portion is adapted to be in sealing engagement with the second member, with the coil spring being compressed in its normal direction when the gasket is assembled between the first member and the second member. The coil spring, then, exerts a sealing force with minimal degradation over time.

Abstract: A system for sealing a plurality of panels including a multiplayer seal having a barrier portion and an adhesion portion.

Abstract: In order to provide a device for the production of gasket layers for single or multiple layered gaskets from one respective gasket layer section of a starting material comprising several continuous gasket layer sections, comprising a follow-on combination tool with several machining stations which follow one another along a direction of feed and in which the gasket layer sections are machined during operating cycles, wherein at least one of the machining stations is designed as a station for cutting outer contour lines, in which facing outer contour lines of two adjacent gasket layers are cut by means of a tool for cutting outer contour lines, and a feeding device, by means of which the gasket layer sections are moved further along the direction of feed by a feed distance v between two operating cycles, with which the outer contour lines of the gasket layers are cut with less resources and the starting material can be better utilized it is suggested that the tool for cutting outer contour lines be designed su

Abstract: A molded boot having an inner layer and an outer layer made from different elastomeric material. Each layer is compatible with the fluid environment to which it is exposed. The dual layer boot provides longer service life with less degradation caused by chemical and environmental exposure.

Abstract: A notched blade seal for covering a gap between a wing and a wing flap of a high performance aircraft includes a bottom seal strip of a flexible, resilient material having a plurality of spaced-apart notches defining a plurality of finger portions, and a top seal strip, also of a flexible, resilient material having a plurality of spaced-apart notches defining a plurality of finger portions. The top seal strip overlies and engages the bottom seal strip and is positioned relative to the bottom seal strip such that the finger portions of the top seal strip overlie and cover the notches in the bottom seal strip.

Abstract: A material for a gasket used in a vehicular engine comprising a steel plate, a coating film which is formed on one or both sides of said steel plate, and a rubber layer formed on said coating film, wherein the coating film comprises an acid, water-dispersible silica, a titanium compound, and a water-soluble polymer represented by a specific formula.

Abstract: A metal gasket for a semiconductor fabrication chamber capable of preventing base plate metal contamination in the chamber, wherein the metal gasket includes a diffusion barrier layer interposed between a base plate and an anti-corrosive coating layer, and wherein the diffusion barrier layer prevents elements of the base plate from being diffused to the anti-corrosive coating layer. Accordingly, the diffusion barrier layer prevents attack on the anti-corrosive coating layer.

Abstract: In forming a bellows-like seal from a welded metallic band, improved mechanical properties may be obtained by welding the ends of a strip forming the band at an angle off-normal to the band rims (and seal axis). The angle may be a single angle (i.e., with a straight weld) or there may be multiple angles (e.g., with a serpentine or other convoluted weld). The weld may extend through the band normal to surfaces of the band or at an angle off-normal. The metallic band may comprise an oxide dispersion strengthened alloy.

Abstract: A component having at least one support member with a first connecting portion and at least one part with a second connecting portion is formed by activating the second connecting portion by plasma treatment and then combining the first and second connecting portions and securing their attachment to one another by a heat and pressure treatment.

Abstract: The present invention involves a low permeation sealing member for reducing permeation of hydrocarbons from a vessel. The low permeation sealing member comprises an elongated body having a contact surface and a low permeation barrier layer attached along the contact surface of the elongated body. The low permeation barrier layer has opposite edges spaced apart to define a slot. The low permeation barrier layer partially covers the elongated body to allow the elongated body to expand through the slot. The low permeation barrier layer has an outer side configured for contacting hydrocarbons from the vessel to reduce permeation of the hydrocarbons therefrom.

Abstract: This invention relates to a stainless steel gasket having markedly improved strength and fatigue properties due to precipitation strengthening. Its composition comprises C: at most 0.03%, Si: at most 1.0%, Mn: at most 2%, Cr: 16.0%-18.0%, Ni: 6.0%-8.0%, N: at most 0.25%, if necessary Nb: at most 0.30%, and a remainder of Fe and unavoidable impurities. After cold rolling, final annealing is carried out, and after a structure is formed of recrystallized grains with an average grain diameter of at most 5 &mgr;m having an area ratio of 50-100% and an unrecrystallized portion having an area ratio of 0-50%, a metal gasket is formed by steps including temper rolling with a reduction of at least 30% to make the area ratio of a strain induced martensite phase at least 40%, and forming and heat treatment at 200-350° C.

Abstract: An over-molded gland seal for producing both a fluidic seal and a fluid conduit. The apparatus includes a substrate having an elastomeric layer over-molded thereon and an elastomeric gland seal molded into the over-molded layer. Another aspect of the apparatus includes a host-part having a raised wall thereon, said host-part receives the elastomeric gland seal and compresses the gland seal with the raised wall. The substrate, the gland seal, and the host-part define an enclosed region. To form the fluid conduit, the apparatus includes a fluid inlet port and a fluid outlet port that communicate with the enclosed region.

Abstract: A gasket material for sealing between two members. The gasket material includes a flexible, woven skeletal member. Enclosing the skeletal member is a flexible, compressible resilient body member having a tacky outer surface, the tacky outer surface for engagement between the two members. In a preferred embodiment the flexible skeletal member is closer to a top surface of the resilient body then it is to a bottom surface of the resilient body. The resilient body may be comprised of urethane. The flexible skeletal member may be comprised of a metallic or a non-metallic material.

Abstract: A joint seal for use in joints that may be exposed to water comprises at least one layer of a compressible impregnated open cell foam. On at least a portion of the surface of the compressible foam there is positioned a hydrophilic material.

Abstract: A flexure endurant composition of an elastomer reinforced with a continuous phase of microporous, expanded polytetrafluoroethylene (ePTFE) having a ratio of elastomer to PTFE of approximately 1:1 to 50:1 on a volume basis. The composite is prepared by a coating process and the final articles are prepared by molding or vulcanizing. Such materials can be used to fabricate pump tubing, pump diaphragms, gaskets, bellows and other mechanical devices.

Abstract: In a gas turbine including a nozzle retaining ring having a first annular axially sealing surface and a shroud segment having an axial registering second surface. To minimize or prevent leakage flow between the retaining ring and shroud segments, a generally U-shaped seal having reversely folded U-shaped marginal portions is received in a cavity formed in the second surface. At operating conditions, the marginal portions seal against the base of the cavity and the first surface of the retaining ring to prevent leakage flow past the retaining ring/shroud segment interface. To install the seal, the seal body is first compressed and maintained in a compressed state by applying one or more wraps about the seal body and an epoxy is used to secure the seal when compressed in the cavity. At operating temperatures, the retention means releases the seal to engage marginal portions against opposite sealing surfaces of the shroud segments and retaining ring.

Abstract: A seal of single or multiple plies and/or single or multiple convolution regions features inflection regions to arrest or reduce bending stress in the seal's acute bend regions and/or ply deformations on non-pressure-facing plies. Additionally, there is disclosed the combined use of multiple-ply seals incorporating the inflection regions in each ply and deformations on non-pressure-facing plies.

Abstract: A sealing system is disclosed which includes a preformed molded or extruded strip which may be used in conjunction with a fluid water-based polymeric sealant to cover or seal a joint or gap between two adjacent surfaces in a waterproof manner. The strip has a cross-sectional configuration which is generally trapezoidal, with two sides which will engage the two adjacent surfaces, a larger base which will be the only side of the strip visible upon installation, and a smaller base which will face the joint or gap between the two adjacent surfaces. The larger base may be either concave or convex to provide a pleasing appearance, the strip may be secured with a fluid water-based polymeric sealant.

Abstract: A seal as a non-woven fabric folded along lines transverse to the opposite side of the seal and secured by adhesive to fabric strips. The non-woven fabric forms elongated cells. By securing one of these strips to a stationary component of the sealing surfaces, the opposite strip may expand or collapse relative to a movable sealing surface to accommodate excursions of that surface. Multiple layers of cells may be provided in the seals. Additionally, to increase seal stiffness, inserts may be extended into one or more of the cells.

Abstract: The composite material for a metal gasket includes a metal plate; a rubber layer fixed on the surface of the metal plate; and a solid lubricant layer fixed on the rubber layer. The solid lubricant layer contains polytetrafluoroethylene and a resin as main components, and has a friction coefficient equal to 0.15 or lower. Thus, the seal durability of the metal gasket is improved by effectively preventing fretting wear.

Abstract: A seal features a first ply and a second ply, each ply having at least one convolution. Leg termination regions connect the plies, such that a substantially enclosed volume is created between said first and second surfaces. Additional plies may be disposed between the first and second plies, the material of the additional plies having substantially the same convoluted shape of the first and second surfaces and being disposed within the envelope created between the first and second surfaces. The seal of the present invention may be formed of tube or strip stock. A seal formed of strip stock may have its edges, running about the circumference of the seal, either abutting, overlapping, or welded to each other.

Abstract: A metal-reinforced layered composite includes at least one intermediate metal layer. The intermediate metal layer includes at least two at least partially overlapping metal foils which are joined to one another in an overlap region by at least one weld seam. There are no leakage channels and/or no continuous leakage channels at the weld seam of the metal foils in the longitudinal extent of the overlap region. At least one of the weld seams may have a course which at least at one point has a direction component at right angles to the longitudinal extent of the overlap region of the metal foils. The intermediate metal layer may be provided with at least one passage in the overlap region of the metal foils. A gasket, a gasket sheet, a metal layer and a method of manufacturing a layered composite are also provided.

Abstract: A pair of substantially opposed mating surfaces are joined to each other and sealed in place by means of an electrically-conductive member which is placed in proximity to the mating surfaces. The electrically-conductive member has at least one element secured thereto which is positioned to contact the mating surfaces, and which softens when the electrically-conductive member is heated by passing an electric current therethrough. The softened element conforms to the mating surfaces, and upon cooling of the softened element the mating surfaces are joined together in an effective seal. Of particular significance is an embodiment of the electrically-conductive member which is a gasket having an electrically-conductive gasket base and a pair of the elements secured to opposite sides of the gasket base. This embodiment is positioned between the opposed mating surfaces to be joined to each other.

Abstract: A packing structure has a core element of a material having a high fluid impermeability, and a thin coated rubber layer formed thereon to cover at least its sealing surface and having a glass transition temperature which is lower than the lowest temperature allowable for the packing structure. It shows a high sealing property even at a low temperature and a high fluid impermeability when used for sealing e.g. a pipeline for conveying fuel in a motor vehicle.

Abstract: The present invention resides in a boot seal for use in sealing a joint. The joint comprises first and second relatively movable parts. The boot seal is configured in the form of a sleeve to extend between and around the vehicle relatively movable parts. The sleeve has a laminate wall which comprises at least two layers of thermoplastic elastomeric material which are bonded together. At least one of the layers is a stretch-toughenable polyester thermoplastic elastomer which has been diametrically stretched in an amount effective to increase the toughness of said one layer. The laminate wall has a percent elongation to rupture of at least 100, and a flexural modulus which is less than 100,000 psi. The laminate wall preferably has a puncture resistance of at least 50 Newtons/mm wall thickness.

Abstract: A seal is formed between two parts of a high pressured chamber by means of a rigid ring, which is formed with curved surfaces, that engage with an anvil and an enclosure part, the anvil having a similar curved projection. At least one of the engaging surfaces is coated with a soft metal e.g. silver.

Abstract: A spiral-wound gasket includes a plurality of tightly wound metal windings to form a core. The windings each have a Chervon cross-section, wherein V-notched undulations of each winding registers with an adjacent winding at said notches. The edges of the windings are welded to form a pre-assembled integral composite that is installed into a J-shaped outer wrap or cover. Finally, the cover is closed about the core so as to entirely cover and encapsulate the core. In a preferred form, both the core and outer cover are formed of stainless steel materials.

Abstract: A foam backed precured joint seal comprising a strip of precured elastomer wider than the joint to be sealed, the strip centrally adhered along its length to an elongated foam backing.

Abstract: A seal is proposed for a sensor element of a gas sensor, in particular for determining the oxygen content in exhaust gases of combustion engines. The seal has a sealing element, which is fixed in position in a longitudinal bore of a metallic housing. The sealing element contains a mixture of steatite and at least one low-melting-point glass. To manufacture the seal, a prefabricated sealing ring made of a mixture of steatite powder and powdered glass is used, which is pressed in the longitudinal bore, the sealing ring being subjected to a thermal treatment, in which the glass is melted.

Abstract: A corrosion resistant gasket for aircraft, and more particularly to encapsulation of a conductive mesh in a pliable fluorosilicone compound that will not become bonded to mating surfaces and will also migrate upon compression during installation to the threads of attaching hardware utilized between the instrument, antenna, and aircraft structure, thereby reducing corrosion through the attaching hardware, by providing a hermetic seal around the periphery of the envelope of the attached device.

Abstract: A thermal barrier for extremely high temperature applications consists of a carbon fiber core and one or more layers of braided carbon fibers surrounding the core. The thermal barrier is preferably a large diameter ring, having a relatively small cross-section. The thermal barrier is particularly suited for use as part of a joint structure in solid rocket motor casings to protect low temperature elements such as the primary and secondary elastomeric O-ring seals therein from high temperature gases of the rocket motor. The thermal barrier exhibits adequate porosity to allow pressure to reach the radially outward disposed O-ring seals allowing them to seat and perform the primary sealing function. The thermal barrier is disposed in a cavity or groove in the casing joint, between the hot propulsion gases interior of the rocket motor and primary and secondary O-ring seals.

Abstract: A compound sheet gasket which exhibits superior sealing durability to fretting is provided. The compound sheet gasket is mounted between a housing and a cover provided at an opening of the housing, and the friction coefficient of any one surface of a front surface adhered to the housing by the flexibility thereof and a rear surface adhered to the cover by the flexibility thereof, is set to be 1.15 times or more that of the other.

Abstract: The present invention proposes a die seal ring. The provided die seal ring is formed on a substrate and is used to encompass a die by locating between the die and adjacent scribe lines. Moreover, the provided die seal ring comprises a plurality of dielectric layers and a plurality of metal structures, wherein any metal structure is not overlapped with other metal structures. Moreover, dielectric layers are located on the substrate in sequence, and each metal structure is stacked by one metal ring and one metal plug. In addition, any metal ring is located on a dielectric layer and is covered by another dielectric layer, and metal rings of different metal structures are located on different dielectric layers. Further, any metal plug is located in the dielectric layers and is used to connect the metal ring to the substrate. Of course, if the aspect ratio of any metal plug is too large to be properly formed, an appendant metal ring is used to reduce the aspect ration of the metal plug.

Abstract: A sealing system for use with acoustic touchscreens is provided. The system includes a seal coupled to a frame, the frame being positioned directly over the acoustic touchscreen components, e.g., acoustic transducers, reflective arrays, etc. such that the seal prevents contamination of the underlying components. The system uses a plurality of tensioning elements that are either integral to, or separate from, the frame. The tensioning elements are preferably coupled at the four corners of the CRT, and more preferably coupled to the CRT mounting tabs. Assuming an approximately spherically curved touchscreen surface, the tensioning elements provide a uniform compressive force per unit length along the entire perimeter of the seal. As a consequence of the tensioning elements, the frame can be extremely thin, lightweight, and flexible, thus allowing it to substantially conform to the shape of the touch surface. Additionally, a very small and uniform gap can be maintained between the frame and the touch surface, e.

Abstract: A seal of single or multiple plies and/or single or multiple convolution regions features inflection regions to arrest or reduce bending stress in the seal's acute bend regions and/or ply deformations on non-pressure-facing plies. Additionally, there is disclosed the combined use of multiple-ply seals incorporating the inflection regions in each ply and deformations on non-pressure-facing plies.

Abstract: A seal features a first ply and a second ply, each ply having at least one convolution. Leg termination regions connect the plies, such that a substantially enclosed volume is created between said first and second surfaces. Additional plies may be disposed between the first and second plies, the material of the additional plies having substantially the same convoluted shape of the first and second surfaces and being disposed within the envelope created between the first and second surfaces. The seal of the present invention may be formed of tube or strip stock. A seal formed of strip stock may have its edges, running about the circumference of the seal, either abutting, overlapping, or welded to each other.

Abstract: An apparatus (10) includes a bearing (24) linking first and second vehicle parts (12, 14) for movement relative to each other, and a boot seal (30) protecting the bearing (24). The boot seal (30) is a tube of heat shrinkable thermoplastic material. The tube (30) has a first end portion (34) shrunken against the first vehicle part (12), a second end portion (42) shrunken against the second vehicle part (14), and a flexible intermediate portion (44) which is deflectable between the opposite end portions (34, 40) upon movement of the vehicle parts (12, 14) relative to each other.

Abstract: A seal features a first curved region generally concave in a direction of concavity, and a second curved region generally concave in the direction of the concavity of the first curved region. The second curved region is oriented within the direction of concavity of the first curved region. A first bend connects the first curved region to the second curved region, and a second bend connects the first curved region to the second curved region.