Abstract: A male member to a hose adapter as for metal to metal, male to female, mating has a frustoconical sealing surface, for example, of 30, 37 or 45 degrees, for mating with a corresponding female member having a corresponding sealing surface. These surfaces are secured by a rotating female member, threads of which mate with the corresponding, threaded male member. The mating parts are drawn together as the threads are engaged and fully torqued. The male frustoconical surface is interrupted by a machined recess or undercut area, for example, of about 0.20 to 0.40 inches deep. This recess or undercut typically starts about one third of the way up the male frustoconical surface, and continues until the taper incline intersects with the threaded plane parallel to the bore of the adapter, and a recess or undercut extension can continue along the thread plane parallel or slightly tapered with respect to the bore until it reaches the base of the male thread, where it terminates.

Abstract: A gasket for use with exhaust systems having at least one header flange and an exhaust pipe flange joined thereto. The gasket includes an inner annular sealing ring like member deformable under pressure mounted on an outer annular metal retainer ring sized to be mounted at a flange junction between said header flange and said exhaust pipe flange. The inner ring has an outside diameter slightly greater than the inside diameter of the inner ring to deformably support the inner ring on the outer ring. The outer ring inside diameter is greater than the inner diameter of the flange junction to permit the inner ring to be compressed upon forming the junction. The inner ring is formed from a non-asbestos fiber fused with spiral wound metal wire. It is preferred that the non-asbestos fiber is an aramid fiber and the spiral wound metal wire is stainless steel. The thickness of the inner ring is at least twice as thick as the thickness of the outer ring.

Abstract: The Invention relates specifically to an improved method of joining plastic socket fit piping components for vacuum, pressure, and structural applications where a leak and contamination free connection is needed. A unique Dual Face/Circumferential Elastomer Seal is installed in a special Seal Groove located on the end of the male component. The male components are then inserted into the female sockets until contact is made between the Dual Face/Circumferential Elastomer Seals and the Female Socket Base Surfaces. The final assembly is evacuated with a vacuum pump to actuate and fully compress the seals. The final assembly is then checked for leaks. If the connections are to remain under vacuum and the ability to disassemble is advantageous, no further work is required.

Abstract: A fluid-tight coupling and sealing arrangement including a flexible joint for coupling a tube with pressurized fluid flowing therethrough to another tube or a fluid device. The flexible joint basically includes a first tubular member with an outer restraining member coupled thereto, a second tubular member, and a pressure-energized seal positioned between the first and second tubular members. The first tubular member has a first fluid passageway and a first annular sealing surface. The second tubular member has a second fluid passageway, a second annular sealing surface, and an outwardly facing bearing surface. The outer restraining member carries an inwardly facing bearing surface for engaging the outwardly facing bearing surface of the second tubular member.

Abstract: A fitting body is provided with a lip that protrudes radially from at least one of the side walls of the seal groove in the sealing face toward the other side wall to form an undercut whereby an annular seal is trapped axially behind the lip to prevent the annular seal from falling out of the groove. The lip is formed by forming the fitting body with a ledge that is integral with the fitting body and protrudes axially from the sealing face adjacent one of the side walls of the groove in the sealing face. The ledge is then flattened to form the lip and an annular seal such as an elastomeric O-ring seal is then inserted into the groove with the annular seal being mechanically trapped axially behind the lip to prevent the annular seal from falling out of the groove.

Abstract: A pair of tubular joint members each have a gasket holding annular protuberance on an abutting end face thereof. The protuberance has an inner peripheral surface continuous with the inner peripheral surface of the joint member, and a sealing face adapted to intimately contact an end face of of a gasket at a position radially outward from the inner peripheral surface thereof. The sealing face is most protuberant at a position radially outward from an inner edge thereof. When the most protuberant end of the sealing face comes into contact with the gasket end face, a clearance is formed between the portion of the sealing face radially inward from the protuberant end and the radially inward portion of the gasket end face. The clearance is eliminated by the deformation of the gasket when the pipe joint is tightened up.

Abstract: A flowline connector will remotely connect subsea flowlines without the assistance of a diver. The flowline connector has a frame which supports a seal carrier plate assembly. Springs allow axial movement of the carrier plate assembly during engagement of mating hubs of flowlines. A metal seal carried by the carrier plate assembly engages conical seats in the hubs of the two flowlines. An elastomeric test seal located radially outward of the metal seal seals between flat faces of the hubs of the flowlines. The test seals elongate radially to wipe the sealing surfaces clean during the makeup.

Abstract: A quick connect coupling for tubing. The coupling includes a tubular male connector member adapted to be telescopically received within a tubular female connector member. The female connector member includes a tubular housing and a tubular retainer cap which is permanently bonded to the housing utilizing a sonic welding technique and which defines prong portions for latching coaction with an annular bead on the male member. The coupling further includes a unitary elastomeric seal positioned in a bore of the female member housing and defining a series of axially spaced, radially inwardly extending seal ribs slidably and sealingly engaging the outer circumferential surface of the male connector member.

Abstract: An expansion joint includes first and second conduits connected by an expansion joint element. The second conduit has a liner portion which protrudes into the first conduit, so that the expansion joint element, first conduit, second conduit and liner portion together define an expansion joint cavity. A cartridge is located within the expansion joint cavity and is affixed to an end portion of the first conduit. The cartridge has a groove which faces the liner portion and houses a ring which slides within the groove while maintaining sliding contact with the liner portion of the second conduit. The outer diameter of the groove is preferably larger than an outer diameter of the ring to allow lateral movement of the first and second conduits relative to one another. Either the expansion joint cavity or the cartridge groove may be provided with a purge fluid inlet to prevent the intrusion of the service fluid and its associated contaminants into the expansion joint cavity.

Abstract: A gasket and retainer assembly for a tube coupling arranged such that the gasket can be installed into, and removed from, a retained and supported position between the coupling components with a strictly lateral movement. The assembly includes a retainer having a pair of engagement portions located on generally diametrically opposite sides of the gasket to radially grip the associated coupling component.

Abstract: A retainer for use in a pipe joint having a pair of tubular joint members for holding an annular gasket in position between opposed end faces of the joint members. The retainer comprises an end wall portion positionable on one side face of the gasket, a cylindrical portion extending from the end wall portion substantially perpendicular thereto for preventing the gasket from moving radially thereof, and an engaging portion provided on the cylindrical portion and engageable with an end portion of one of the joint members. The end wall portion has a cutout for passing the gasket therethrough.

Abstract: The Invention relates specifically to an improved method of joining plastic socket fit piping components for vacuum, pressure, and structural applications where a leak and contamination free connection is needed. A unique Dual Face/Circumferential Elastomer Seal is installed in a special Seal Groove located on the end of the male component. The male components are then inserted into the female sockets until contact is made between the Dual Face/Circumferential Elastomer Seals and the Female Socket Base Surfaces. The final assembly is evacuated with a vacuum pump to actuate and fully compress the seals. The final assembly is then checked for leaks. If the connections are to remain under vacuum and the ability to disassemble is advantageous, no further work is required.

Abstract: A gasket for use on a exhaust connection between an exhaust manifold and an exhaust pipe includes a spherical sealing portion which mates with sealing portions on both the exhaust manifold and the exhaust pipe. The spherical-to-spherical-to-spherical contact allows adjustment between the various sealing surfaces, while maintaining an adequate seal. Interference fits are utilized to secure the gasket to one of the exhaust manifold and exhaust pipe. Further, a method of forming the gasket involves first drawing a sheet into the general shape, and then punching all required openings in the gasket shape.

Abstract: The disclosure relates to a threaded member having an annular groove which is of greater depth than the base of the adjacent thread. A resilient ring is mounted in the groove having an outer periphery extending above the base of the thread and a plurality of projections are formed at spaced locations around the ring to be deformed by the engagement of the threaded member with a corresponding threaded member to form a seal between the respective threads of the engaging members.

Abstract: A tapping sleeve for attaching a branch line to a main fluid conduit. The tapping sleeve has upper and lower sleeve members, bolted together around the main fluid conduit. Shell gaskets seal between the sleeve members and the main fluid conduit and a branch gasket seals around a side opening in the upper sleeve member. Metal shell gasket retaining rings secure the shell gaskets in place and a metal branch gasket retaining ring secures the branch gasket. In the preferred embodiment, the retaining ring has a circular cross section.

Abstract: According to a further aspect of the present invention there is provided a coupling comprising a male coupler and a female coupler including means for allowing transmission of fluid pressure between the couplers on the mating of the couplers, a first annular seal positioned in a recess in the body of the female coupler to provide a seal between the male and female couplers and extending around the periphery of the male coupler, an outer retainer engageable with the body of the female coupler, and inner retaining means supported by the outer retainer to maintain the first seal in position on withdrawal of the male coupler from the female coupler, the outer retainer accommodating a second annular seal which seals against and around the periphery of the male coupler, and the inner retaining means serving to keep the second seal in position.

Abstract: A pipe joint comprises a pair of tubular joint members having a gasket holding annular projection on each of butting faces thereof, an annular gasket interposed between the butting end faces of the joint members, and a nut for connecting the joint members together. When the nut is tightened up, an indentation is formed in a surface of the gasket pressed by each of the gasket holding projections, and the gasket is pressed also by a portion of the end face of each joint member having no annular projection.

Abstract: A seal or connector and seal apparatus which includes a generally annular member having an outer surface and an inner surface and a plurality of tabs extending generally radially from at least one of the surfaces. The tabs are disposed to engage axially spaced teeth of an associated helically shaped threaded surface.

Abstract: A pipe joint comprises a pair of tubular joint members having a gasket holding annular projection on each of butting end faces thereof, an annular gasket interposed between the butting end faces of the joint members, a retainer for causing one of the joint members to hold the gasket thereto, and a nut for connecting the joint members together. The retainer comprises an annular portion, a gasket holding portion having a plurality of claws inwardly projecting from the annular portion for holding the outer periphery of the gasket, and a joint member holding portion formed in the annular portion and engageable with the end face of one of the joint members. The gasket is provided on its outer periphery with a slipping-off preventing portion engageable with the claws of the gasket holding portion of the retainer.

Abstract: A combination fluid flow port which can be used as both a full size threaded port and a full size flange port is provided with an annular ring constructed and arranged to fit closely within a counterbore in the end of a threaded hole in the port to provide a face aligned with and extending radially inwardly from the mating face of the port body for use in enclosing the O-ring seal of a flange type male half connected to the port.

Abstract: A pipe connection which the insertion piece fits into a sleeve and presses a retaining ring there against. The retaining ring has a compression rib and is constructed so as to be urged into a channel in the sleeve, The ring body is formed unitarily with a sealed lip and a closure lip and a compression-relieving groove opens axially in the direction of insertion and extends almost to but is spaced from a radial plane of the compression rib.

Abstract: Device for connection between a flexible pipe 1 and a rigid tubular joining piece 2 intended to be fitted inside the flexible pipe. Two coaxial, rigid, tubular elements 3, 4 are disposed respectively inside and outside the end of the flexible pipe and embrace this end. The inner tubular element 3 and the outer tubular element 4 each present, in contact with the flexible pipe, two cylindrical portions of different diameters, 3a,4a-3b,4b, the one of larger diameter being located towards the free end of the flexible pipe. The portion of larger diameter 3b of the inner tubular element thus constitutes, on its inner face, a housing 5 for the O-ring, said housing being closed by an annular wall 8 fixed to the outer tubular element 4.

Abstract: Hose coupling component, especially for a hose connection between a turbo charger and an air cooler in an internal combustion engine, comprises a pipe sleeve (12) of pressed sheet metal, which has a peripheral flange (16) to be fixed by means of a V-shaped clamp to a corresponding mirror image flange on a complementary coupling component. The sleeve has a groove (18) for a gasket in the flange and has a circumferential depression (15) for indexing a hose (1) forced onto the coupling component.

Abstract: A sealed connector for an automotive air conditioning system compresses a sealing ring between accurately ground, axially opposed sealing surfaces of a pair of mated connector blocks that are bolted together. A steel retainer to which the sealing ring is molded prevents it from being blown out under high pressure, and one of the connector blocks is relieved to accommodate the retainer, thereby preventing interference with the clamping of the blocks. Seal compression is even and complete.

Abstract: A tube coupling comprises first and second coupling components having transversely extending sealing end faces in aligned face-to-face relationship. First and second nut members are arranged to drive the sealing end faces toward each other. An annular anti-twist member is located between the first nut means and the first coupling member for conducting axial forces from the first nut member to the first coupling component. The annular anti-twist member and the second nut member include axially engaged portions for preventing relative rotation therebetween.

Abstract: A coupling apparatus is provided for quick coupling of pumping equipment to a cylindrical member. The coupling apparatus includes at least one sealing member that may be hydraulically biased to provide a fluid tight seal between the coupling apparatus and a cylindrical member.

Abstract: A refrigerant tube piercing tool capable of being removably and sealingly mounted on a refrigerant tube of copper or the like in a sealed refrigerant system to enable the recovery of refrigerant from the sealed system without discharge into the atmosphere. The tool includes a pair of clamp members one of which includes a sealing member and passageway combined with a threaded, pointed piercing member that is manually threaded into engagement with the tube for forming a hole therein and a fitting having a Schrader valve incorporated therein to which a hose leading to a recovery tank can be connected to enable refrigerant to be transferred into the recovery tank for subsequent use. The tool is reusable and can be removed after the refrigerant has been transferred into the recovery tank in order that the leak or other problem with respect to the refrigerant system can be repaired at which time the hole formed in the tube is closed by soldering or the like with the refrigerant system then being recharged.

Abstract: The present invention is a water conduit connector for an animal water supply system. The connector has a body which receives adjacent ends of water conduit sections. Inserts are positioned into the connector body and define pockets for positioning sealing o-rings. The inserts, o-rings, and connector body receive the conduit section ends, with the o-ring being compressed to form a sealing contact with the outer surface of the water conduit. The insert includes a ridge which engages an internal groove of the connector body to securely fasten the insert within the connector body. Tapered portions of the insert and connector body facilitate the entry of the insert into the connector body. The connector facilitates manufacture because no sonic welding is needed to complete the connector body and form the pockets in the connector body which house the o-rings.

Abstract: A flange assembly (24) includes a cover (26), a base (28) and a compliant gasket (30) all of which are of circular configuration with a central opening. Gasket (30) is assembled within a nest formed by tapered surface (52) and rim (50) of base (28). Cover (26) is assembled with base (28) by the snap fit of inwardly turned edge (38) of the cover into annular groove (56) of the base. In this position, an inwardly turned lip (34) of cover (26) engages a ledge (70) of gasket (28) to retain the gasket within the nest. A section (78) of gasket (28) extends into a central opening of flange assembly (24) and includes a tapered inner side wall (62) which frictionally engages a conduit (20) of a faucet as the flange assembly is slid onto the conduit. Conduit (20) compresses section (78) of gasket (28) which includes side wall (62 ) into the nest where the forces of the compressed gasket retain flange assembly (24) with the conduit.

Abstract: A sealing device for the fuel supply port of a fuel tank for use in vehicles includes a nozzle seal made of a rubber-like elastic material. The nozzle seal is provided in an annular groove formed in an inner peripheral surface of a fuel supply port guide in such a manner as to be movable in a radial direction. The inner peripheral portion of the nozzle seal can make contact with a fuel supply nozzle with an interference provided therebetween. A seal is provided on an outer peripheral or side surface of the nozzle seal to seal a gap in said annular groove. A reinforcing ring is provided on an outer peripheral portion of the nozzle seal. The reinforcing ring has axial and radial portions. The radial portion of the reinforcing ring is located adjacent to the fuel supply port guide on a side of the annular groove adjacent to the tank.

Abstract: The present invention relates to an accommodating sealing sleeve which allows for the off-axis connection of two conduits. The accommodating sealing sleeve is generally comprised of an annular housing and various internal components. The internal components include an adaptive seal, an adaptive seal retainer, a bushing and a garter spring. A conduit is inserted through the housing, adaptive seal retainer and adaptive seal to become locked in. The adaptive seal is flexible to accommodate the off-axis entry of the conduit into the accommodating sealing sleeve.

Abstract: A double-wall composite pipe comprises a permeable annulus structure separating impermeable inner and outer walls. The permeable annulus structure has micro-fractures formed therein that function to reduce the flow rate and pressure of fluids leaking through the inner wall to thus inhibit fluid leakage. The annulus structure resists the stresses produced by internal fluid pressures and other service loads. The inner and outer walls will remain permanently impermeable while the pipe annulus structure undergoes stress-induced dimensional changes. A coupler assembly mechanically connects each longitudinally adjacent pair of pipes together and comprises two semi-cylindrical half-couplers, a compressible seal ring, a cylindrical retaining sleeve, and a flexible boot that encloses and seals the assembled half-couplers. A leak detecting sensor may be located at the coupler assembly. A preferred method and apparatus for making the pipe and coupler assembly are also taught.

Abstract: A connecting device, particularly for the assembly of a hose with a heat exchanger of an automotive vehicle. It comprises a mobile ring (25) housed inside one of the two elements of the connecting device, and which comprises on its periphery at least one tab elastically deformable in radial direction (28, 29) and a U-shaped clip integral with the element (2) provided with notches and slits (18, 19), the arms of the clip being separated by the ring (25) as long as the device is not assembled, but resuming their operating position of immobilization of the connecting device when the ring is displaced in the tubular component (2), upon said component being brought close to socket (1) associated with the waterbox of the heat exchanger.

Abstract: A washing machine drain hose connector for coupling the discharge hose pipe to a sewer drain pipe is made of pliable, elastomeric material. The connector shape is a staggered, coaxial series of cylindrical sleeve sections connected end to end by integrally molded annular shoulders. The cylindrical sleeve radii increase progressively along the sequence of joined sleeve section. A largest sleeve section is folded back over the next-to-largest sleeve section to frictionally grip the drain pipe on both its inside and outside surfaces. The smaller sleeve sections grip various standard sizes of washing machine discharge hose pipes inserted into the drain pipe. All sleeve sections are sized to interfere, so that they are stretched around the pipes and exert friction forces to hold the pipes in coupled relation. To increase the frictional holding force, the sleeve sections (except the largest) are all at least as long as the sleeve radius, the sleeve walls are smooth (i.e.

Abstract: A gasket and retainer arrangement for use in a coupling of the type having first and second coupling components with opposed end faces including sealing ribs extending axially therefrom with an annular sealing gasket interposed therebetween comprises a retainer device for maintaining the gasket in a predetermined located position relative to the end face of one of the components. The retainer includes a generally sleeve-like body defining a retaining portion closely received over the one component at an area rearwardly from the associated radial end face. A plurality of axially extending leg portions are spaced about the retaining portion and extend axially beyond the associated end face. The annular sealing gasket has an outer periphery of a diameter at least slightly greater than the inner diameter of the sleeve-like body with recesses formed in the outer periphery to receive the axially extending leg portions whereby the gasket is maintained in aligned relationship with the end face.

Abstract: Herein disclosed is a connector for connecting slender piping members. The connector comprises: a connector body and a separate socket body. The connector body is formed axially therethrough with a stepped smaller-diameter chamber, which is expanded to lead to a communication hole formed in a connecting cylindrical wall at the leading end, and a stepped larger-diameter chamber which is positioned at the back of the smaller-diameter chamber. The connector body is further formed with a pair of engagement holes or slots opposed to the circumferential wall of the larger-diameter chamber to form a retaining wall at the circumference of the rear end. The connector body has seal ring members at the side of the smaller-diameter chamber and a bushing member at the back of the seal ring members.

Abstract: A double pipe connection is provided having a one-piece gasket (5), which extends sealingly into an intermediate space (1c) of one pipe end (1a) with an internal, transversely extending wall (5c), on one hand, and, also sealingly surrounds a partition (2c) of the other pipe end (2a), on the other hand. The two pipe ends (1a and 2a) are inserted into each other in the axial direction, and are held together with a locking bar (6) in a positive-locking manner. The cross section of the pipe connection may be non-round, e.g., rectangular. Since the pipe ends have no flanges and outer threads, they may be cut to any length, and shaping suitable for injection molding is possible. The double pipe connection is particularly suitable for liquid-bearing pipes on sanitary devices, e.g., drain fittings for wash stands.

Abstract: A pipe swivel joint with male and female hubs and an improved bore seal assembly having an anti-extrusion ring that axially energizes the swivel joint hubs toward their operational position as the joint is assembled.

Abstract: A tube coupling assembly particularly suited for ultra-high vacuum applications comprises a pair of coupling components having through passages and abutting end faces. Each end face includes an annular continuous rib or bead. A threaded coupling nut acts to drive the ribs into sealing engagement with the opposite sides of flat annular sealing washer gasket positioned between the end faces. To prevent relative rotation between the end faces and the sealing gasket, as well as to prevent torque transmission to related system components, protrusions are provided which engage the coupling components to produce a driving connection between the gasket and/or the two coupling components prior to engagement of the ribs with the gasket. Also, a resinous plastic bearing washer is used between the coupling nut and the associated coupling component to reduce torque transmission during make-up.

Abstract: A pipe connector device for selectively interconnecting a pair of pipe elements in an end-to-end relationship and for sealing a junction between the elements to prevent leaks. A first and a second pipe element each includes a cavity adjacent to a center bore in the pipe element. The first pipe element has a substantially smooth inner surface which defines an outer boundary of a first cavity. An annular seal mounted in the cavities seal the junction between the pipe elements. A threaded outer portion of the seal has a plurality of radially outer points which press against the inner surface of the first cavity to retain the annular seal in the first cavity when the pipe elements are separated.

Abstract: A joint comprises a body including a cylindrical front wall having an inner bore, a small diameter chamber extending from the bore and having a diameter larger than that of the cylindrical wall, a large diameter chamber extending rearwardly from the small diameter chamber, and a rear, engagement wall, seal rings disposed in the small diameter chamber through a spacer, and a discrete socket having a rear end engaged with the engagement wall of the body and a front end projecting to provide a plurality of claws. The claws are resiliently engageable with an annular projection of a pipe when the pipe is inserted into the joint. The small diameter chamber has an annular step on its inner periphery. The spacer includes an annular projection for engagement with the step of the small diameter chamber. A bushing is disposed behind the seal rings.

Abstract: A pipe repair or joining collar comprising a pair of rigid arcuate casing members (10) which may be drawn together around a damaged pipe or a pair of pipe ends with the interposition of one or more elastomeric arcuate seals (13) and wedges (17) located between the casing members and the seals and adapted to slide inwardly and generally tangentially to force the seals radially inwards to ensure sealing engagement with the pipe or pipe ends, mutually abutting longitudinal resilient sealing strips (16) projecting, at least in part, from opposed faces of the wedges (17) in a manner such that in at least one region of each pair one of the sealing strips is substantially flush with its associated face whilst the other projects from it so that during assembly the projecting strip may ride laterally onto the flush strip to ensure lateral alignment of the casing members.

Abstract: A swivellable fitting assembly has a housing with a stem with a rotatable nipple on the stem. The rotatable nipple is sealed and spaced from the nipple to enable rotation of the nipple or housing with respect to one another.

Abstract: A sealing ring having a predetermined axis of symmetry is formed of a resiliently compressible elastomer for use in a sealing ring system in which two members are secured together with the ring interposed therebetween. The sealing ring has an annular base portion that has substantially parallel first and second axially extending surfaces with each surface having a first axial edge and a second axial edge spaced therefrom, and the second axial edges are joined by a radially extending surface. Integrally formed with the base portion is an annular head portion that extends between both of the first axial edges of the axially extending surfaces of the base portion. The head portion has a predetermined maximum axial thickness and at least one substantially planar surface extending generally radially a predetermined distance from the first axial edge of at least one of the axially extending surfaces of the base, whereby each of the planar surfaces and the adjacent axially extending surfaces form a shoulder.

Abstract: A fusible plug structure is provided for use on a refrigeration system component. Among the features of the invention is means of a novel character for connecting a gasket or sealing member to one end of a fusible plug body, which assures a proper and effective seal when the plug body is assembled with a companion female fitting member fixed to the refrigeration system component. The connecting means markedly facilitates proper placement of the sealing member regardless of the particular position of the female fitting and supporting refrigeration system component. The connecting means may take various forms, and illustrative thereof is a substance such as oil or grease. Alternatively, one end of the fusible plug body may be so configured as to receive the sealing member in close fitting contact therewith. The sealing member itself may be variously configured.

Abstract: A tube coupling comprises first and second coupling components having transversely extending sealing end faces in aligned face-to-face relationship. First and second nut members are arranged to drive the sealing end faces toward each other. An annular anti-twist member is located between the first nut and the first coupling member for conducting axial forces from the first nut member to the first coupling component. The annular anti-twist member and the second nut member include axially engaged portions for preventing relative rotation therebetween.

Abstract: A clamp for forming a seal on a pipeline section, the clamp comprising a pair of complementary clamp members to be clamped together, each clamp member having an inner surface with a pair of axially spaced, circumferentially extending circumferential seals, and one clamp member having a pair of circumferentially spaced longitudinal seals which extend axially to bridge the gaps between the opposed circumferential ends of the pair of circumferential seals to define four junction zones where the circumferential seals and the longitudinal seals abut, and retention means at each junction zone to connect the circumferential and longitudinal seals together in the retention zones, and at the same time connect the seals to the clamp member at the junction zones. The clamp includes corner seals to provide backup sealing from the junction zones. The clamp includes heat protection grooves to protect certain of the clamp seals. The clamp may include a pipe branch to provide a hot tapping facility.

Abstract: An undersea hydraulic coupling includes a male member and female member, and a two-piece retainer for restraining radial movement of a wedge-shaped annular seal into the central bore of the female member. The two-piece retainer includes a cylindrical retainer sleeve member slidably received within the female member bore, and a threaded retainer-locking member threadable to mating threads in the wall of the central bore. The retainer-locking member holds the retainer sleeve member in place within the female member bore. The annular seal is restrained from radial movement by a dovetail interfit with a mating shoulder on at least one of the retainer sleeve and the retainer-locking members.

Abstract: A union joint capable of connecting two pipes in a perfectly sealed joint. The union joint comprises a first sleeve hermetically joined to a first pipe, a second sleeve hermetically joined to a second pipe, a metallic gasket interposed between the first and second sleeves so as to be compressed between the respective pressing surfaces of the first and second sleeves when the first and second sleeves are drawn axially toward each other and a coupling nut combined with the first sleeve so as to be screwed on the second sleeve to draw the first and second sleeves axially toward each other.

Abstract: A sealing device for use in a refueling opening is provided with an elastic seal member which seals a gap between a tubular casing provided in the refueling opening and a fueling nozzle inserted into the casing at the time of refueling. The elastic seal member is mounted inside a seal retaining member which is mounted inside the casing, The elastic seal member has a relief lip capable of closely contacting the casing to effect sealing, and a seal lip capable of closely containing the inserted fueling nozzle to effect sealing. A gap is formed around the outer periphery the seal lip, thereby allowing the seal lip to expand so that the inside diameter thereof increases in conformity with the outside diameter of the fueling nozzle as the nozzle is inserted.