Abstract: A sealing strip, such as for fitting to the frame of a door opening in a motor vehicle body, comprises a longitudinally extending channel-shaped mounting portion incorporating a channel-shaped reinforcing carrier. The hollow tubular longitudinally extending sealing portion is attached to the outside of the mounting portion. When such a strip is bent to follow curves in the door frame, the increased tension in the mounting portion at the curves can cause the sealing portion to move inwardly of the curve so as partially the bridge across the curve. In order to avoid this, the sealing strip, and particularly the mounting portion are longitudinally compressed at positions corresponding to the positions where curves are to be formed in the strip. This local longitudinal compression helps to maintain the sealing portion in its correct attitude.

Abstract: For sealing an annular space (4) between opening (2) in a wall or similar, member (1) and an object (3), extending through the opening (2), by introducing a sealing agent into the space (4), at least one bag (9, 10), into which the sealing agent is introduced, is positioned in the space (4). For this purpose, a supporting element (5, 6) is used, which can be positioned in the opening and to which a bag (9, 10) is fastened. The annular space (4) can be sealed easily and also liquid-tight in this manner.

Abstract: A flat gasket includes a gasket body and at least one eyelet enclosing the gasket body. The gasket body is formed of a pressure-resistant core which is resistant to temperatures of at least 150° C. and a covering that completely covers flat outer sides of the core and is made of a gas-tight foil of an organic polymer having a long-term temperature resistance of at least 150° C. The eyelet or eyelets enclose the gasket body with a gas-tight joining. The core is formed of a plastic or elastomer reinforced with fibers and/or fillers, or it is formed of mica or graphite. If mica or graphite are used, the core is preferably formed of layers disposed alternately on top of one another and formed of graphite foils and metal foils or layers of mica and metal foils.

Abstract: The disclosure describes a method of sealing the ends of fabric on a radio frequency interference (RFI) gasket and a description of the gasket made by such method. The method used electrically conductive material to cover a foam interior and then sealing the exposed ends of all six sides of the covering, creating a radio frequency interference (RFI) gasket.

Abstract: A one piece seal for an electric switch for sealing the spaces between a pivotal switch actuator and its supporting frame and between such frame and the switch base. This seal comprises a generally rectangular molded member of resilient material having a raised central boot portion containing a pair of downwardly extending leg openings for sealingly receiving respective legs of the switch actuator, a pair of lugs or pads on its bottom surface for locating and retaining the seal with respect to the switch base, and a crisscross pattern of shallow raised ribs on at least one surface of the seal along the perimeter thereof. The seal is pinched between the frame and base, compressing the ribs, and hugs the actuator legs to provide an economical but effective seal.

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: In a quick connector for piping 10 for detachably connecting a male member 12 to a female member 11, an O-ring 15 is interposed between the female member 11 and the male member 12 so as to form a seal therebetween, and the O-ring 15 is subjected to a low-friction treatment so that the O-ring can be moved in a direction of an axis of the quick connector 10 by a pressure of an employed fluid.

Abstract: A improvement to a gasket that includes an elongated seamless tubular member formed from at least a plurality of interwoven glass fiber yarn ends and a plurality of spring clip fasteners spaced along the tubular member, each fastener including a base located within the tubular member and an engagement portion extending outwardly through the tubular member away from the base. The free ends of the tubular member are coupled together at a joint so that the elongated tubular member forms a closed loop. A second tubular member is positioned around the joint, concealing the joint. The second tubular member may include one or more fasteners each having a base located between the elongated tubular member and the second tubular member and an engagement portion extending outwardly through the second tubular member away from the elongated tubular member. The second tubular member may be composed of at least a second plurality of glass fiber yarns interwoven together or a corrugated metal tube.

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 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: For sealing an annular space or space (4) between an opening (2), in a wall or similar member (1), and an object (3) extending through the opening (2), at least one sealing element (6) is placed in the annular space (4). Initially, the sealing element (6) is placed in the compressed state between the wall (1) and the object (3) and subsequently is released from the compressed state to an expanded state. For this purpose at first, the sealing element (6) is compressed by a sheath (7) which, after the sealing element (6) is positioned in the annular space (4), is destroyed and makes the expansion of the sealing element (6) possible.

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: The self-anchoring expansion gap assembly for refractory lined vessels such as a gasifier includes a substantially annular insulating blanket structure formed of compressible refractory material. A coil of rope formed of relatively incompressible refractory material is positioned proximate an outer periphery of the insulating blanket structure. The expansion gap assembly is placed in an expansion gap of a gasifier, for example, such that the coil of rope aligns with an annular channel formed in the refractory lining of the gasifier at the expansion gap. Compression of the expansion gap assembly locks the coil of rope in the annular channel of the expansion gap thereby resisting vacuum pullout. The coil of rope can be formed as a single coil or a plurality of substantially concentric coils preferably from a single length of refractory rope.

Abstract: The invention relates to a metal seal, which is fitted with a coating containing 10 to 60 wt. % of at least one elastomer, 5 to 50 wt. % of at least one inorganic fiber, 0.5 to 20 wt. % of at least one organic fiber, 10 to 80 wt. % filling material. The part by weight ratio of the at least one elastomer in relation to the part by ratio sum of the at least one inorganic fiber and the at least one organic fiber ranges from 1:1.1 and 1.5:5. The invention further relates to the coating material.

Abstract: An improved seal for a rotary valve for high temperature and high pressure fluids. A removable seal member adapted for disposition between a valve body and a valve member rotatably disposed in the valve body is provided. In one aspect of the invention, the seal member is adapted so that pressure exerted by the valve is sufficient to induce cold flow in the seal member. In another aspect of the invention, the seal member includes a pair of longitudinally disposed slots.

Abstract: An elastomeric gasket for a pipe coupling having a dry lubricating film of an aqueous solution of a lubricant and a film-forming polymer adhered thereto.

Abstract: Sealed structural joints for use in manufacturing pressurized tank structures, and particularly cryogenic fuel tanks. In a preferred embodiment, the structural joints and seals comprise a strain-compliant material as applied to a joint or seam to provide a surface to bridge the joint with a continuous skin so as to provide a completed bonded inner surface. In the preferred embodiment, the strain-compliant material comprises honeycomb, although foam cores and homogenous elastomeric materials may also be utilized. Among the specific applications by which the joint seals of the present invention may be employed include splice joint seals, frame seals, and access cover openings.

Abstract: A sealing device for sealing at least two facing surfaces of two adjacent machine elements includes an inflatable sealing tube arranged in a groove in a first surface of a first machine element. The sealing tube can be filled with a medium to which pressure can be applied, and can be inflated by the medium as well as made to rest against a second surface of a second machine element, forming a seal. The ends of the sealing tube are each arranged in an insert piece. The insert pieces are each structured as a sleeve and surround the ends of the sealing tube under elastic pre-stress, forming a seal. The sleeves are each arranged in a recess of the first machine element that extends essentially crosswise to the lengthwise direction of the groove. In the non-pressurized state, the sealing tube and the face of the sleeves that faces the second surface of the second machine element are essentially flush with the first surface of the first machine element.

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: The disclosure describes a method of sealing the ends of fabric on a radio frequency interference (RFI) gasket and a description of the gasket made by such method The method used electrically conductive material to cover a foam interior and then sealing the exposed ends of all six sides of the covering, creating a radio frequency interference (RFI) gasket

Abstract: An improved pipe belling process is shown which a gasket is installed on the outer working surface of a forming mandrel at one circumferential location. The heated socket end of a thermoplastic pipe is forced over the mandrel exterior and over the gasket causing the heated socket end of the pipe to flow over the gasket and form a retention groove for retaining the gasket before again contacting the working surface of the mandrel. The heated end of the pipe is cooled and retracted from the working surface of the mandrel. The gasket has a non-stick, anti-friction coating applied to portions of the exterior thereof.

Abstract: A hinge (20) an an aircraft (24) has a first plurality of rigid tangs (22) attached to the aircraft (24). A second plurality of rigid tangs (26) are attached to a door (28) and a flexible cover (34) has a cover tang (44). A hinge pin (32) runs inside the first plurality of rigid tangs (22), the second plurality of rigid tangs (26) and the cover tang (44).

Abstract: An electrically conductive seal which is metered onto a sealing surface in a freshly-extruded condition, for the junction point between two housing sections of a conductive housing which accommodates electronic modules, for shielding from interference radiation and for the prevention of a material transfer through the sealing gap is constructed in two or more layers by means of co-extrusion and encompasses at least one internally-positioned elastic sealant strand which does not contain conductive components, as well as an external ring-shaped conductive strand which encases the latter and which has low inherent elasticity and wall thickness and is made of an elastic sealant which is mixed with electrically conductive constituents. As a supplement or an option, an absorber strand which is made of magnetic constituents which are imbedded in a sealing material may be provided in the inside of the seal.

Abstract: A metallic base gasket coated with elastic membrane having an outer sealing portion for sealing an outer circumference of a refrigerant compressor and an inner sealing portion for sealing boundaries between high and low pressure regions within the compressor, the outer and inner sealing portions being formed in an elastically deformable ridge, and at least one section of the ridge of the inner sealing portion being trifurcatedly connected to a portion of the ridge of the outer sealing portion to have a geometrical arrangement in which apex lines of the connected three ridges are equiangularly spaced apart from one another with respect to the center of the trifurcated connection of the ridges. The gasket may have an extended flat or curved face portion at the trifurcatedly connected ridges to permit the apexes of the connected ridges lie in the extended flat or curved face portion.

Abstract: A low profile secondary seal for sealing the space between the inner wall of a tank and a roof floating on a liquid product within the tank is of relatively simple, lightweight construction and of low profile so as to maximize the possible height of the floating roof within the tank. The seal includes a plurality of resilient support plates mounted in spaced-apart relation along the edge of the floating roof at first ends thereof and extending outwardly to opposite second ends thereof which are coupled to an elongated wiper assembly. The support plates are made of resilient material such as full hard stainless steel which maintains a desired shape in resilient fashion, so as to continuously resiliently bias the wiper assembly against the inner wall of the tank. The second ends of the support plates are pivotably coupled to the wiper assembly. Angled skid plates coupled to the wiper assembly engage the inner wall of the tank to facilitate movement of the wiper assembly thereover.

Abstract: A gasket which is compression-failure resistant, even at operating flange pressures in the range of from about 3,000 to about 15,000 PSI and also has a good sealing ability, comprises a soft gasket material having two opposed, facial surfaces and an aperture with an edge perpendicular to the facial surfaces, wherein the edge of the aperture has a polymer coating (coating A) on the edge for a good sealing ability. In this embodiment, except for coating A, the gasket is otherwise not coated which makes the gasket compression-failure resistant. In embodiments which need even better sealing ability, at least one of the opposed, facial surfaces has polymer coating B, which may abut both the edge and polymer coating A, wherein polymer coating B on the facial, opposed surface leaves the gasket uncoated for sealing ability in an amount effective to give the gasket compression failure resistance.

Abstract: An apparatus for manufacturing a large-diameter gasket in which a pair of holding presses have press members which selectively bears against an elongate band while a bending press pivots against a portion of the band. The drive press bears against a portion of the band, and with the holding presses released, moves longitudinally to move a next portion of the band into the bending press. A method of manufacturing the large-diameter gasket is disclosed, together with a jig for applying a patch of sealing material to a joint formed between opposing distal ends of the gasket.

Abstract: A safe mountability of a radial seating ring without mistakes, in which the radial sealing ring comprises a spring steel sheet, coated with an elastomer and having a cross section of undulating course, with at least one bulge pointing toward the interior of the sealing ring and at least one bulge pointing outward in the opposite direction, for contact with parts to be sealed off.

Abstract: A gasket includes an elongated strip including a first resilient gasket component and a second resilient gasket component having shielding properties, the first and second gasket components being joined together. A method for making a gasket is also disclosed.

Abstract: A turbine spline seal includes an elongated turbine seal member. The seal member has an elongated, imperforate, and manually-flexible first portion and a manually-rigid second portion lengthwise adjoining the first portion. The turbine assembly includes the turbine spline seal and also includes first and second turbine members. The first and second turbine members are spaced apart to define a fluid-path leakage gap therebetween, and the seal member is placed in the gap. Each lengthwise edge of the seal member engages a respective one of two opposing surface grooves of the first and second turbine members.

Abstract: A sealing gasket for sealing a flange face, especially a flange face that may be sensitive to uneven application of pressure or that cannot be provided with any sort of flange retaining means comprising a sharp angle in the flange surface. The gasket includes at least a metal ring, a reinforced fluoropolymer sheet, an O ring and a fluoropolymer protective shield. The metal ring is defined by inside and outside circumferences, by widely separated outwardly directed parallel surfaces that in turn define maximum thickness of the ring, by narrowly separated parallel surfaces defining opposing depressed portions in the ring and by opposing shoulders. Each of the widely separated parallel surfaces is covered by at least one reinforced fluoropolymer sheet having inside and outside surfaces positioned so that the inside surface of the sheet faces and covers at least one of the widely separated parallel surfaces and so that the outside surface faces outwardly. The gasket includes at least two O rings.

Abstract: A tubular coupling assembly is disclosed which includes a pair of identical coupling members secured together by a splined stud. A sleeve member is inserted between the identical members to provide a leak free fluid pathway between the coupling members.

Abstract: A capsule is formed from a pre-expanded foam core in a compressed condition with a thermoplastic outer covering completely enveloping the foam core to maintain it in the compressed condition. The outer covering is made of a material capable of softening sufficiently when heated to permit the foam core to expand toward its original expanded uncompressed condition. Preferably, the outer covering adheres to the foam and then is carried by the expanding foam into intimate contact with the inner surface of a hollow structural member so as to form a seal for the hollow structural member.

Abstract: A hybrid gasket includes a core defining an aperture therein, the core having an outer edge portion and an inner edge portion immediately surrounding the aperture. The gasket further includes a chemically resistant material encapsulating the inner edge portion, and an expanded graphite material encapsulating the outer edge portion. A method of sealing two substantially parallel surfaces includes the steps of interposing between the surfaces a gasket, and securing the surfaces to one another. The gasket including a core defining an aperture therein, the core having an outer edge portion and an inner edge portion immediately surrounding the aperture. The gasket further including a chemically resistant material encapsulating the inner edge portion and an expanded graphite material encapsulating the outer edge portion.

Abstract: A metallic base gasket coated with elastic membrane having an outer sealing portion for sealing an outer circumference of a refrigerant compressor and an inner sealing portion for sealing boundaries between high and low pressure regions within the compressor, the outer and inner sealing portions being formed in an elastically deformable ridge, and at least one section of the ridge of the inner sealing portion being trifurcatedly connected to a portion of the ridge of the outer sealing portion to have a geometrical arrangement in which apex lines of the connected three ridges are equiangularly spaced apart from one another with respect to the center of the trifurcated connection of the ridges. The gasket may have an extended flat or curved face portion at the trifurcatedly connected ridges to permit the apexes of the connected ridges lie in the extended flat or curved face portion.

Abstract: A resilient braided rope seal for use in high temperature applications includes a center core of fibers, a resilient canted spring member supporting the core and at least one layer of braided sheath fibers tightly packed together overlying the spring member. The seal provides both improved load bearing and resiliency. Permanent set and hysteresis are greatly reduced.

Abstract: A composite fluoropolymer material contains outer layers consisting essentially of conformable porous polytetrafluoroethylene (PTFE) and interior layers consisting essentially of rigid fluoropolymer material which may be a densified expanded PTFE, wherein the composite layers may optionally contain electrically conductive fillers. The composite is bonded together to form a sheet material that is sufficiently conformable to provide good seal between surfaces and is sufficiently rigid to make the material easy to handle and install. The material of the present invention is particularly suitable for use as a gasket where rigidity is needed, customization or modification of gasket shape is desirable, and/or where a wide, even sealing surface is sought.

Abstract: A plate type heat exchanger includes a plurality of laminated plates 11 each having a resin-covered gasket 15 mounted in a gasket groove 13 therein surrounding a heat transfer surface 12. The resin-covered gasket includes a core 15a of elastic material whose liquid-contacted side surface is covered with a corrosion-resistant resin cover 15b. In this plate type heat exchanger, the liquid-noncontacted side of the core 15a is integrally formed with a fixing element 16, while the outer peripheral surface of the plate 11 is formed with a recess 14 adapted to fit on the fixing element 16. Thus, the resin-covered gasket 15 can be mounted in the gasket groove 13 without using any adhesive agent.

Abstract: A cheap composite gasket is constructed in such manner that the sealing property and the vibration isolation are compatible. So, in the composite gasket, NBR rubber acting as a first hard elastic member is arranged at a position of a bolt portion, while NBR foam rubber acting as a second soft elastic member is disposed at a position of a liquid sealing portion, in a central core member consisting in a stainless steel plate.

Abstract: Expansion seal ring with an essentially torus shaped expansion seal (1) which is provided between two concentric positionable connection pieces (2, 3) to be sealed or the like, which include a sealing section (1a) which is pulled over the edge (3a) of one of the two connection pieces (3), and which includes an expandable section (1b), which is provided to be radially effective between the two connection pieces (2, 3), as well as a jacket (4) which essentially completely covers or envelopes the expansion seal (1) at least in the area of the expandable section (1b).

Abstract: The present invention relates to coated substrate materials which are coated with a coating substance preferably containing an amount of oil, so that when in use the coated substrate material will prevent the formation of rust on metal machine parts and piping, and a method for making the coated substrate material and the coating which covers the substrate material. Preferably, the present invention relates a gasket made from a fibrous substrate material which is coated with an amount of an oil and wax admixture, with the gasket used to prevent long term formation of rust on metal parts.

Abstract: A sealing element, particularly for shut-off and regulating valves, comprising a tabular, piston-shaped or spherical shut-off body of a ceramic material having a hard material layer containing carbon and silicon applied to a sealing surface of the shut-off body by plasma chemical vapor deposition or plasma polymerization, in a coating chamber. The hard material layer comprises a bonding layer component applied to the sealing surface of the shut-off body and a subsequent sliding layer component. The carbon-containing bonding layer component has a first silicon content favoring adhesion to the sealing surface of the shut-off body and the subsequent carbon-containing sliding layer component having a second silicon content lower than that of the bonding layer component to achieve low coefficients of sliding friction and static friction.

Abstract: A seal assembly having a flexible cloth seal which includes a shim assemblage surrounded by a cloth assemblage. A first tubular end portion, such as a gas turbine combustor, includes a longitudinal axis and has smooth and spaced-apart first and second surface portions defining a notch therebetween which is wider at its top than at its bottom and which extends outward from the axis. The second surface portion is outside curved, and a first edge of the cloth seal is positioned in the bottom of the notch. A second tubular end portion, such as a first stage nozzle, is located near, spaced apart from, and coaxially aligned with, the first tubular end portion. The second tubular end portion has a smooth third surface portion which surrounds at least a portion of the first tubular end portion and which is contacted by the cloth seal.

Abstract: A blade seal (20) for an aircraft has a mounting structure (22). A composite blade (26) is attached to the mounting structure (22). The composite blade (26) has a plurality of holes (28). An elastomer substance (30) is used to fill the plurality of holes (28).

Abstract: An improved, chemically resistant gasket is constructed from a composite containing outer layers consisting essentially of conformable expanded polytetrafluoroethylene (PTFE) and interior layers consisting essentially of a densified expanded PTFE, wherein the composite layers may optionally contain electrically conductive fillers. The composite is bonded together to form a sheet material that is sufficiently conformable to provide good seal between surfaces and is sufficiently rigid to make the material easy to handle and install. The material of the present invention is particularly suitable for use as a gasket where rigidity is needed, customization or modification of gasket shape is desirable, and/or where a wide, even sealing surface is sought.

Abstract: An expanded graphite sealing material is provided in which the adaptability of the principal face of an expanded graphite base member is improved, the bonding strength to a coating layer and the like can be increased, and the sealing properties can be enhanced. A method of producing such a sealing material, and a gasket sheet using the sealing material are also of concern. On at least a portion of a principal face of the expanded graphite base member in which expanded graphite particles are pressurized and integrated together, opened thin-leaf graphite portions are formed. The principal face of the expanded graphite base member having the thin-leaf graphite portions can be impregnated with a sealing member such as PTFE or covered with a coating layer. As the form of the sealing material, a sheet, a press-molded product, a fabric, a string, or a braided article can be adopted.