Abstract: A gasket assembly (20) and method for forming the gasket assembly (20) for sealing two mating surfaces (46,48) over a complex geometrical contact region. The gasket assembly (20) is formed by a hollow silicone rubber tube (22) having a naturally straight configuration but easily bent into complex configurations without kinking. The tube (22) is filled with a curable liquid rubber compound (30) and then the ends (24,26) of the tube (22) are joined in end-to-end fashion to form a continuous loop. The joined ends (24,26) of the tube (22) can be reinforced with a connector (34,134) and then locally cured on a preliminary operation so that the liquid rubber compound (30) does not escape. The tube (22) is then laid up in a mold (40) having a complex geometrical feature (42) which replicates the complex geometrical contact region of the two mating surfaces (46,48) to be subsequently sealed.

Abstract: A gasket and method of forming a seal between opposite surfaces of a pair of bodies. The gasket has a body with one portion having a plurality of perforations adapted for receipt between the opposite surfaces. The method of forming the seal includes disposing the portion of the body with the perforations between the opposite surfaces and fastening the pair of bodies to one another to compress the perforate portion of the body therebetween.

Abstract: A cylinder head gasket constructed in accordance with invention provides a reliable gas/fluid-tight seal between a cylinder head and cylinder block during assembly and maintains the seal during use without substantially losing the contact pressure provided by the gasket during assembly while in use. The cylinder head gasket includes a first functional layer having an opening bounded by an annular free edge. The first functional layer has a full bead and a half bead. The half bead is between the full bead and the free edge. The half bead extends in a first axial direction to a plateau portion and the full bead extends in a second axial direction opposite the first axial direction to a peak.

Abstract: A refrigeration unit includes an external housing located primarily outside of a vehicle compartment of a vehicle, and an internal housing located primarily inside of the vehicle compartment. A vehicle roof of the compartment has an external layer and an internal layer spaced apart from the external layer with insulation located there between. The vehicle roof includes an opening that receives the refrigeration unit. A gasket provides a seal between the refrigeration unit and the vehicle roof. The gasket covers the exterior layer and the interior layer. The gasket is formed of multiple layers of material which are secured to one another.

Abstract: The invention discloses a metal seal with a seam, wherein the metal seal has at least one sealing regions which is delimited on two sides by a respective boundary in order to be in seal-forming contact with at least one corresponding sealing surface, wherein the seam is provided with at least one weld seam, which is characterized in that each weld seam extends only outside the boundaries of at least one sealing region, such that he metal seal at eh seam between the boundaries of at least one sealing region is unwelded over the entire thickness of the seam.

Abstract: An annular sealing device is provided that includes a composite material having a substantially rigid substrate with both a first major surface and a second major surface, and also of a shape where the substantially rigid substrate is configured to extend out of a plane parallel to a sealing surface at an angle. The annular sealing device also includes a polymer layer overlying at least one of the first major surface and the second major surface.

Abstract: Multi-layer seals are provided that find advantageous use for reducing leakage of gases between adjacent components of electrochemical devices. Multi-layer seals of the invention include a gasket body defining first and second opposing surfaces and a compliant interlayer positioned adjacent each of the first and second surfaces. Also provided are methods for making and using the multi-layer seals, and electrochemical devices including said seals.

Abstract: A gasket commonly used for a plural kinds of objective members to be sealed, the objective members having the same outer shapes and differently figured plural bores to be sealed.

Abstract: The laminated sheet of this invention is a sheet including expanded porous polytetrafluoroethylene films laminated by thermal compression bonding, wherein the sheet has a specific surface area of 9.0 m2/g or larger and a density of from 0.4 g/cm3 to lower than 0.75 g/cm3, thereby making it possible to improve both the creep resistance and the adhesiveness between the films of the expanded porous PTFE film-laminated sheet.

Abstract: A seal part having a base material, a porous coating layer formed by flame spraying a hard material on a seal surface of the base material, and a lubricating film containing one or more types of materials selected from silver, gold, and tin and a gold-cobalt alloy on the porous coating layer. The seal part of the present invention has superior durability and sealability and further a long life and high reliability even when used in a high temperature (for example 400° C. or more, in particular 400 to 600° C.) and high pressure (for example 2 MPa or more) environment.

Abstract: A gasket having a concentrically waved metal sheet, i.e., a core member, which has a PTFE sheet or an inorganic sheet of sealing-property layered and bonded on each of its opposite surfaces. The gasket makes it possible to ensure a stable sealing-property for a long period of time with a low to a high fastening-load applied. The metal sheet has valley portions, which were conventionally vacant gaps, and are filled with powdered sealing member to be embedded from the beginning. Therefore, the PTFE sheet or the inorganic sheet at the valley portions of the metal sheet that conventionally could not be compressed with a low fastening-load applied is compressed and even with the low fastening-load applied can secure a fastening surface-pressure over the entire surface.

Abstract: A multi-layered composite gasket (10) includes three, preferably metallic cores (12, 14). A solid center core (12) is flanked on both sides by bonded paper layers (30). Perforated cores (14) mechanically interlock with each paper layer (30) through inwardly directed tangs (22). Graphite layers (26) are disposed outside of each perforated core (14) and are mechanically interlocked thereto by outwardly directed tangs (20) extending from the perforated cores (14). When using the gasket (10) material for sealing cylinder heads in internal combustion engines, a fire ring (46) may be affixed with a fire ring holder (48). The gasket (10) can be manufactured by making first and second preform sheets (32) comprised of one perforated core (14) sided with one paper layer (30) and one graphite layer (26). The preform sheets (32) are then bonded to a center core (12) using a heat activated adhesive.

Abstract: A facilitated rupturable multilayer seal comprising a deformation layer and a layer free of deformation, or an upper portion and a lower portion, where the upper portion comprises a deformation layer and the lower portion comprises a layer free of deformation, where the deformation layer may be comprised of multiple layers; where the layer free of deformation may be comprised of multiple layers. The deformation layer and the layer free of deformation are combined and fixed to each other, and form a moisture and vapor resistant barrier. The multilayer seal allows for both containment of liquids, as well as separation of solids and liquids, with a solid impervious barrier and yet it is easily broken, allowing either access to, or transfer of, a solid or liquid out of or into a container, including the mixing of a solid with a liquid or a liquid with a liquid.

Abstract: A high temperature seal that may include an interior region comprising a material that swells when exposed to a high temperature environment and at least one projection that is able to be inserted into a slot, and a coating that substantially prevents swelling to coated areas of the interior region. The coating may be disposed upon an exterior surface of the interior region such that a distal end of at least one projection remains at least partially uncoated and the remainder of the interior region is substantially covered by the coating. The interior region may include a ceramic matrix composite.

Abstract: This method for producing a seal barrier for a micro component comprising a stack of two thin sealing layers involves forming a fusible interlayer between two sealing layers, said fusible interlayer having a melting temperature which is lower than that of the two sealing layers and melting said interlayer.

Abstract: A gasket in an integrated double-layered structure comprising an outer layer and an inner layer enclosed by the outer layer, in which the outer layer is a low-hardness rubber layer having a JIS A hardness of 40-70, and the inner layer is a high-hardness rubber layer having a JIS A hardness of 80-100, where a ratio h/h0 of height h of the inner layer to height h0 of the outer layer is preferably 0.3-0.8, and ratio d/d0 of height d of the inner layer to width d0 of the outer layer is preferably 0.5-0.8 in the longitudal cross-section as view from the width direction of the gasket, has a low reaction force, and distinguished sealability and insertibility, and used as inserted between two members, one of which has a groove for insertion.

Abstract: A cylinder head gasket for sealing between a cylinder block and a cylinder head, composed of a composite base plate, the composite base plate comprising a core material plate and a compound layer formed on the front and back surfaces of the core material plate, the compound layer being formed by coating compound materials which contain a rubber and a fiber material. The cylinder head gasket is comprised of an annular groove which is formed by pressing the corresponding region around the cylinder bore of the compound layer, and a bead projecting from the surface of the compound layer which is formed by inserting the rubber material into the annular groove.

Abstract: Primary objective of the present invention is to effect a seal against a variable clearance formed between assembly components which admit flows of high temperature fluids or are subjected to vibrations. Another objective is to reduce manufacture cost thereof.

Abstract: A compressor diaphragm for a gas turbine engine having improved wear capability, manufacturability, and assembly techniques is disclosed. The diaphragm includes a shiplap-type joint at an outer vane platform for connecting to adjacent vane assemblies and a clamshell-like assembly of a seal box secures and seals regions around the inner vane platform of the compressor diaphragm so as to reduce wear between the seal box and the vane assemblies. The inner platform of the diaphragm segments are fastened to each other through circumferentially-oriented fasteners at the inner diameter platform.

Abstract: A paper seal comprising a stretched thermoplastic resin film that comprises (a) a surface layer, (b) a substrate layer, and (c) a water-based adhesive-receiving layer having a water absorption level of from 2 to 25 ml/m2, wherein the stretched thermoplastic resin film has a porosity of from 20 to 50% and a 120°-opening time by bending repulsion of from 20 to 70 seconds. The paper seal can be stuck in a flat state without being curled by the environmental influence during labeling or by the influence of seasonal variation, and can be peeled off completely.

Abstract: Disclosed is a method for mechanically connecting flat seals comprising at least two layers. In said method, the individual layers are placed in the area of a tool, at least one punch that has an approximately circular cross-section partially cuts the layers at defined points of the respective connection zone, and at least some of the remaining material is deformed outside the respective cut zone to form bent zones such that the respective cut zone is round and the respective bent zone is straight. Burrs of at least one of the layers are effectively connected to the material of at least one other layer in order to form a removable clamping connection, said burrs being formed in the cut zone.

Abstract: The invention relates to a metallic flat gasket comprising two or more metallic gasket layers (2, 3, 3?, 3?), of which a shortened gasket layer (2) has a smaller surface area than the at least one other gasket layer. At least one through-opening (4) extending through the gasket layers is surrounded by a self-contained bead (5) which is introduced into one of the relatively extensive gasket layers (3), the shortened gasket layer (2) leaving free an outer edge region (6), which does not comprise the bead (5), of the relatively extensive gasket layer.

Abstract: A method is disclosed for forming a seal between air ducts and/or terminal units thereof, the method comprising the step of extruding a caulking compound about the perimeter of the air duct to form a continuous seal (4). The invention is implemented by way of extruding the caulking compound by at least two layers so that a second layer (4?) is extruded radially over the first layer (4?).

Abstract: A stack of substantially parallel ceramic plates (22) separated and interconnected by ceramic spacers (26, 27) forming a seal structure (20) with a length (L), a width (W), and a thickness (T). The spacers are narrower in width than the plates, and may be laterally offset from spacers in adjacent rows to form a space (28) in a row that aligns with a spacer in another adjacent row. An adjacent plate bends into the space when the seal structure is compressed in thickness. The spacers may have gaps (60, 62) forming a stepped or labyrinthine cooling flow path (66) within the seal structure. The spacers of each row may vary in lateral separation, thus providing a range of compressibility that varies along the width of the seal structure.

Abstract: Compressive composite seals for solid oxide fuel cell applications are provided. A compressive composite seal structure includes a glass phase to provide a gas tight seal, a reinforcing secondary phase to provide mechanical stability, and a compressive core. The compressive core is filled with an inert gas or air, providing a degree of compressibility, or alternatively is filled with a selected material to provide a more specific degree of compressibility and strength, such as a lower melting point glass. The compressive composite seal structure maintains an effective seal during the operating conditions of the SOFC. The self healing glass phase with the reinforcing secondary phase providing mechanical stability provides an elastic response at high temperature, effectively reduces crack propagation and if the temperature or pressure goes too high, the seal remains reliable and effective.

Abstract: The invention relates to a sealing disk for openings of containers, comprising a metal layer used to inject heat by induction, a layer which can be sealed on the container opening and which can be melted by thermal conduction via the metal layer. The sealable layer is adjacent to the inside of the container when the sealing disk is placed on the container opening. An absorber layer which can extract and/or absorb oxygen from the fluid is provided such that said absorber layer is in contact with the inside of the container when the sealing disk is placed on the container opening.

Abstract: The present invention provides a gasket material to be placed between two opposing faces to provide a tight closure between them. The gasket material of the present invention, wherein an adhesive layer comprised of a cured product obtained by reacting a polyoxyalkylene polymer having at least one alkenyl group in each molecule with a compound containing two or more hydrosilyl groups on average in each molecule is formed on both surfaces of a substrate sheet, is superior in elasticity and compaction property, shows superior adhesion to various materials, does not cause cohesive failure during detachment and is superior in removability. Therefore, a superior sealing effect lasts for a long time, the gasket material can be removed without leaving residues of the adhesive layer on an adherend after removal, and workability including removal of the gasket material can be improved.

Abstract: Embodiments of systems include primary and secondary seals, and pressure-relief devices that are configured and positioned so that the secondary seals can have maximum rated capacities substantially less than those of the primary seals.

Abstract: The present invention concerns a seal for a cable entry, pipe penetration or the like formed of two halves. The seal is to be received in a sleeve or the like and forms a central opening for a cable (7), pipe or the like when the seal halves are brought together. The outer diameter of the seal is variable to be adapted to different mounting dimensions. To adapt the outer diameter of the seal to the mounting dimension of the sleeve, a number of outer peeling sheets (5) are arranged on the outside of the seal. The sheets (5) adhere to each other but may be peeled off by hand.

Abstract: A gasket or seal member constructed of elastomeric material has at least one slot extending lengthwise of the member and across its thickness at an oblique angle to the sealing faces. There may be a plurality of slots spaced apart across the width of the member. In a preferred form of the invention multiple, parallel slots are formed at an oblique angle to the seal faces of the member forming branchiate-like layers of gasket material, in which each of the layers partially overlays at least one other layer.

Abstract: A conformal seal (20) for sealing air flow between a cooling airflow path and a hot gas flow path within a combustion turbine engine. The conformal seal (20) may be fitted within cooperating side slots of adjacent vane segments (10) within the combustion turbine engine. The conformal seal (20) may include an elongated metallic substrate (22, 40) forming an upper surface and a lower surface. A conformal coating (26, 44) may be deposited over one or both surfaces of the substrate (22, 40). The conformal coating (26, 44) may be deposited to a depth so that a point contact between the conformal coating (26, 44) and respective interior walls of the side slots wears the conformal coating (26, 44) to establish surface area contact there between. The surface area contact improves a sealing function between the conformal coating (26, 44) and the respective interior walls during operation of the combustion turbine engine.

Abstract: Apparatus for increasing stiffness in a seal are disclosed. A disclosed apparatus includes a first flexible member having a curved sealing surface and a second flexible member adjacent to a retainer side of the first flexible member. The second flexible member is configured to increase a stiffness of the first flexible member in one of a plurality of flow directions.

Abstract: A low-compression force metal gasket includes a coating layer containing a polymer material on at least a sealing surface of the gasket, and the coating layer satisfies the following conditions (1) to (3): (1) the layer comprises a resin, a rubber or a mixture thereof having an oxygen gas permeability coefficient at 25° C. of 10×10?12 to 0.1×10?12 (m2/s); (2) when the layer is compression deformed, the storage elastic modulus (E?) at 200° C. is in the range of 1.0×107 to 1.0×102 Pa; and (3) the coating layer has a thickness of 1 to 40 ?m. The gasket provides a high seal at a low clamping force.

Abstract: A seal has first and second spring elements each having first and second surfaces along a bellows cross-section and extending between first and second edges. A spreader is secured to an endplate between the first edges of the first and second elements to capture first edge portions of the first and second elements.

Abstract: It is disclosed a method of deposting a seal coating and a seal system comprising at least two layers on the surface of an article. The upper or surface layer has a higher chromium activity than a bottom layer to reduce a diffusion of cobalt and the formation of cobalt oxide is reduced. The coating of invention may be heat-treated to reduce or optimize the formation of cobalt oxide to sustin the wear property.

Abstract: A seal comprising a high temperature RTV silicone adhesive sealant layer; a first non-ceramic layer mounted to the RTV silicone adhesive sealant layer; a first expanded metal layer mounted to the first non-ceramic layer; a first silicone cloth layer mounted to the first expanded metal layer; a metal reinforcement layer mounted to the first silicone cloth layer to provide structural integrity without the use of ceramic materials; a second expanded metal layer mounted to the metal reinforcement layer; a second non-ceramic layer mounted to the second expanded metal layer; a turbine mesh layer mounted to the second non-ceramic layer; a second silicone cloth layer mounted to the turbine mesh layer; a sealing castable applied over the second silicone cloth layer to provide a covering; and, a high temperature bonding adhesive disposed between each layer following the first non-ceramic layer to bind the layers together.

Abstract: A refrigeration unit includes an external housing located primarily outside of a vehicle compartment of a vehicle, and an internal housing located primarily inside of the vehicle compartment. A vehicle roof of the compartment has an external layer and an internal layer spaced apart from the external layer with insulation located there between. The vehicle roof includes an opening that receives the refrigeration unit. A gasket provides a seal between the refrigeration unit and the vehicle roof. The gasket covers the exterior layer and the interior layer. The gasket is formed of multiple layers of material which are secured to one another.

Abstract: A gasket for shielding a seam between two surfaces includes a resilient member, a first electrode, a second electrode and a conductive layer. The resilient member has a first side and an opposite second side. The first electrode is disposed on the first side of the resilient member. The second electrode is disposed on the second side of the resilient member. The conductive layer envelops at least a portion of the resilient member, the first electrode and the second electrode. The resilient member includes a material that is compressed when a first potential is applied between the first electrode and the second electrode and that is decompressed when a second potential, different from the first potential, is applied between the first electrode and the second electrode.

Abstract: An improved turbine spring clip seal for directing gases to be mixed with fuel in a combustor basket. The turbine spring clip seal may include an inner housing and an outer housing. The inner housing or the outer housing, or both, may be shortened relative to conventional clips and may include a cooling channel proximate to a point of attachment to the combustor basket.

Abstract: A gas diffusion layer incorporating a gasket (GIG) is described along with assemblies incorporating the GIG subassembly. Processes for making the GIG and membrane electrode assemblies (MEAs) incorporating the GIG are also described. A GIG subassembly includes a gas diffusion layer (GDL) and a gasket bonded to the GDL. The gasket includes a first gasket layer and a second gasket layer. The second gasket layer is formed of a gasket material in contact with the first gasket layer and the GDL. The gasket material of the second gasket layer bonds the GDL to the first gasket layer. An adhesive layer, and optionally a removable adhesive liner, is disposed on a surface of the first gasket layer opposite the second gasket layer. In some MEA configurations, the GDL is disposed within an aperture in the first gasket layer.

Abstract: The invention provides a multi-layer gasket seal. The gasket seal includes a sheet having a first sheet surface. An aperture pierces the first sheet surface. A first channel is defined in the first sheet surface and extends along a first path around the aperture. The first channel has a depth and a width. The gasket seal also includes a ring seal disposed in the first channel. The ring seal has a thickness defined between a sealing surface facing away from the channel and an opposing surface facing the channel. One of the thickness and the depth varies about the aperture such that a distance between the sealing surface and the first sheet surface varies about the aperture.

Abstract: A sealing gasket and a method are provided. One aspect of the sealing gasket includes a base. The base is densified to form a substantially flat portion and a raised seal portion. The raised seal portion is configured to conform to a contour of a surface of a component and seals a region between the surface and the base to prevent fluid leakage. Another aspect of the sealing gasket includes a filter portion. The filter portion is coupled to the base and configured to extend across a fluid passageway of the base.

Abstract: Disclosed is a seal structure of a high-pressure tank capable of properly securing seal efficiency. The seal structure of the high-pressure tank includes a plurality of seal members that have mutually different seal properties and that are installed between a ferrule of the high-pressure tank and a valve body attached to the ferrule. One of the plurality of seal members has low temperature resistance, and the other has high temperature resistance. A first seal member is an O-ring formed of butyl rubber or silicone. A second seal member is an O-ring formed of EPDM. Furthermore, the two O-rings are different in gas permeability from each other. This seal structure can be applied between the ferrule and the valve body, in addition, between the ferrule and a liner, between the ferrule and a shell, and between the valve body and the shell.

Abstract: A gasket for shielding a seam between two surfaces includes a resilient member, a first electrode, a second electrode and a conductive layer. The resilient member has a first side and an opposite second side. The first electrode is disposed on the first side of the resilient member. The second electrode is disposed on the second side of the resilient member. The conductive layer envelops at least a portion of the resilient member, the first electrode and the second electrode. The resilient member includes a material that is compressed when a first potential is applied between the first electrode and the second electrode and that is decompressed when a second potential, different from the first potential, is applied between the first electrode and the second electrode.

Abstract: A seal extending between adjacent slots of a gas turbine engine is disclosed. The seal comprises a plurality of generally planar members fixed together along a central axis. The outer member further comprises rounded ends that encompass the second and plurality of third generally planar members. The seal disclosed herein improves sealing capability by providing a more compliant seal over the prior art while reducing the mechanical loads experienced along the seal weld joint, thereby improving seal durability.

Abstract: A metal gasket has a primary bead formed on an area positioned between a cylinder bore and a cooling water passage. A second bead is formed on an area corresponding to an opening of one or more cooling passages. A base member of the metal gasket comprises bead plates that have a rubber coating layer. The base member also comprises a shim member disposed between the bead plates. The primary bead is formed by defining a space respectively between the bead plates and the shim member. The secondary bead is formed by defining a space on a given area between the bead plates.

Abstract: A seal for restricting leakage of a fluid from a first chamber, through a gap between two components, to a second chamber is provided. A slot is formed in each of the two components. The slots face one another and are open to the gap. Each slot contains a longitudinal axis, an upstream surface proximate the first chamber and a downstream surface proximate the-second chamber. Disposed in the slots and spanning the gap is a bridging assembly comprising first and second bridging elements. Each bridging element contains a sectional profile, transverse to the longitudinal slot axis, that is wave shaped. The bridging elements further contain a crest portion disposed between two trough portions with the crest portions nesting together. When installed, the trough portions are disposed in the slots and the crest portions are disposed in the gap.

Abstract: A gasket for use in a fuel cell system having at least one externally manifolded fuel cell stack, for sealing the manifold edge and the stack face. In accordance with the present invention, the gasket accommodates differential movement between the stack and manifold by promoting slippage at interfaces between the gasket and the dielectric and between the gasket and the stack face.

Abstract: The invention relates to a high-temperature resistant seal, particularly a seal for use in a high-temperature fuel cell. The inventive seal comprises a structured metallic layer having at least one area on whose surface a filler is placed. The filler is comprised, in particular, of clay minerals or ceramic materials. The seal thus advantageously combines the sealing properties of a metallic layer, for example, of an undulated metal foil with the elastic properties of the filler. The seal is particularly suited for use at high temperatures and thus, for example, in high-temperature fuel cells.

Abstract: A fuel cell system having an electricity generator that generates electricity by the electrochemical reaction between hydrogen and oxygen. The electricity generator includes a membrane electrode assembly with a conductive polymer membrane, and anode and cathode electrode layers on opposite sides of the conductive polymer membrane. The electricity generator has a pair of separator plates facing the anode and cathode electrode layers of the membrane electrode assembly and having channels through which flow hydrogen containing fuel or oxygen containing gas. There is also a pair of gaskets provided on opposite sides of the ionic conductive polymer to enclose each edge of the anode and cathode electrodes so that fluid leakage is prevented between the ionic conductive polymer membrane and the separator plates, wherein at least one of the gaskets is used as a voltage measuring gasket including a nonconductive first frame and a conductive second frame.