Abstract: Couplings and coupling components which prevent relative rotation between tubular members when break away torque forces are applied to the tubular members. In one embodiment, the invention is a locking ring for preventing relative axial rotation between two generally tubular members. The ring is shaped to receive a sealing gasket and has two side faces wherein each side face is shaped to frictionally engage one of the tubular members to thereby prevent relative axial rotation between the tubular members. The invention is also directed to a coupling including a locking ring and a method of making a coupling having a locking ring to prevent relative rotation between the tubular members. In another preferred embodiment, the invention is a coupling comprising two generally tubular members each having a sealing end face, a raised, annular sealing bead, an inner bore, and a frictional surface located radially outward of the sealing bead.

Abstract: A mat gasket for use with a tapping saddle is disposed about an aperture in a main fluid conduit and is further disposed between and in sealed contact with the main fluid conduit and an outer sleeve member. The mat gasket includes an aperture aligned with the aperture in the main fluid conduit and outer and inner portions in sealed contact with the outer sleeve member and the main fluid conduit, respectively. The mat gasket's inner portion is provided with a waffled surface and includes spaced ribs concentrically disposed about and in closely spaced relation to the aperture in the gasket and a pair of opposed, tapered edges. The mat gasket's outer portion is provided with a pair of concentric O-rings disposed about the gasket's aperture for engaging the outer sleeve member in a sealed manner.

Abstract: In an attachment structure of a gasket for a refrigerant-seal, both first and second connection members are disposed to define a seal space by first and second opposite surfaces and first and second wall surfaces, and the gasket having a beam portion is disposed in the seal space so that one end surface of the gasket is held on the first wall surface of the first connection member and the other end surface of the gasket is separated from the second wall surface of the second connection member by a predetermined clearance, before both the first and second connection members are fastened. After both the first and second connection members are fastened, the gasket extends, and the other end surface of the gasket press-contacts the second wall surface.

Abstract: The present invention is a pipe sealing gasket designed for receipt within a bell pipe groove, the bell pipe also having an inside surface. The gasket fitted within the groove allows a spigot pipe having an outside surface to be inserted therein to form a continuous pipe joint. The gasket can be best described with reference to a horizontal axis drawn parallel to the central axis of the bell pipe, the gasket comprising a ring shaped elastomeric body which, when viewed in cross section, includes a leading nose region joined to a lower compression region by a spigot ramp. The gasket also has a socket bulb region joined to the leading nose region by a concave section and a tail portion. The tail portion or the gasket is joined to the lower compression region by a spigot face seal and joined to the socket bulb region by a belling face seal in continuity with a belling ramp.

Abstract: The sealing arrangement for a flat flanged joint comprising a preferably metallic base body 1 has bearing surfaces 7, 7′ on each of its two sides for ring-shaped supports (11, 12) made of a soft material, the bearing surfaces (7, 7′) being flat over a large area and being situated essentially directly opposite to each other, at least one ring tooth (2, 3) being provided in the inner radial area of each bearing surface and preferably at least one ring tooth (5, 6) being also provided in the outer radial area of each bearing surface, said soft material supports each being fixed on the bearing surfaces (7, 7′), the ring teeth (2, 3, 4, 5, 6), when the arrangement is assembled, coming to rest on the flange surfaces (14, 15), and the soft material supports (11, 12) being at least inwardly limited by the ring teeth (2, 3), wherein the wall of the base body (1) has a low thickness of only 0.2 to 2.0 mm, preferably 0.3 to 1.

Abstract: A dielectric gasket (10) includes an outer annular disk (50) and an inner annular disk (56) both formed, at least in part, from electrically non-conducting materials. A seal (54) is disposed between an inside diameter (58) of the outer annular disk (50) and an outside diameter (62) of the inner annular disk (56). The outer annular disk (50), the inner annular disk (56), and the seal (54) operate to form an insulating barrier of electrically non-conducting material between adjacent pipe flanges (12, 14).

Abstract: An improved thin walled threaded spacer for use in preventing thread galling in adjacent sections of drill pipe in a drill string is formed by mechanically deforming a strip of copper/beryllium alloy containing 2% beryllium to form a preform having a hollow, truncated conical section and then mechanically deforming the conical section to impart helical grooves therein.

Abstract: A seal for preventing the flow of fluid under high pressure, between a carrier and a mating element adapted to engage the carrier is provided by a resilient elastomeric sealing element which is disposed in an arcuate groove in the carrier and deformed when the carrier is joined to the mating element. The sealing element has a base with oppositely extending wings and a head with a convex surface that is engaged by the mating element for deflecting the head within the groove.

Abstract: In order to achieve constantly stable, high seal performance without requiring high machining accuracy, and in order to provide a reusable jacket seal, the present invention discloses a jacket seal, wherein a projection is formed at a position of a metal jacket in opposite relationship with a seal surface of a member being sealed, a flat portion is formed in an elastic member within the metal jacket so as to be brought into surface-to-surface contact with a flange portion interior surface, and the vertex portion of the projection is formed flat.

Abstract: A ring seal contains a core made from an elastic organic polymer and a metal jacket having a U-shaped sectional shape, which jacket surrounds the core to prevent transfer of a substance generated from the core into the sealed space. The seal of the present invention does not release a foreign material into the sealed space, nor does it require a great force for clamping. Accordingly, it is useful as a vacuum seal that achieves miniaturization and reduced weight of a vacuum apparatus. In particular, by making the sectional shape of the metal jacket a U shape, the core can be easily detached and attached for fitting after forming the jacket, and the inside of the jacket can be washed easily.

Abstract: A clamped flange pipe or tube fitting assembly includes a resilient seal ring compressed in a chamber formed by cooperating recesses in opposed flanges. The chamber and seal ring are dimensionally related in a manner to produce circumferentially continuous, radially spaced primary and secondary seal areas and to assure a continuous interior surface between the connected pipes or tubes with no recesses to entrap process fluids.

Abstract: A face seal for forming a sealed condition between two spaced, opposed surfaces. The face seal includes an inner seal retainer member and an outer seal retainer member each defining an area having an axis therethrough. The inner and outer seal retainer members each having a first axial end portion, an opposite second axial end portion, and an axial extent as measured between the first axial end portion and the second axial end portion. The outer seal retainer member is disposed radially outwardly of the inner seal retainer member, defining a space therebetween. An elastomeric seal member having an axial extent longer than the axial extent of the first and second inner and outer seal retainer members is disposed in a predetermined portion of the space between the inner seal retainer member and the outer seal retainer member.

Abstract: A double lobed seal comprises first and second annular seals, each having a radially inwardly projecting annular lobe that engages against a sealing surface of a valve element in a valve housing to seal the valve element in its closed position. With increasing fluid pressure exerted on the dual lobe seal, the upstream seal is compressed and moves radially away from the valve element sealing surface. This movement allows the fluid under pressure to enter a void between the two annular seals. The increasing fluid pressure in the void exerts a compressive force on the downstream annular seal that causes its annular lobe to move radially inwardly increasing the force of its sealing engagement with the disk valve sealing surface. In this manner, the dual lobe seal increases its sealing effectiveness when subjected to increasing fluid pressures.

Abstract: A seal system for sealing between a pair of members is provided wherein a pair of substantially aligned walls on inner faces of the members have internal frustoconical portions. A metal ring includes a pair of lips with external frustoconical portions which sealingly engage the internal frustoconical portions. The metal ring includes at least one convolution between the lips. The convolution permits axial extension of the metal ring upon application of external pressure to the ring.

Abstract: Sealing assemblies are illustrated for heaters, pumps, conduits, and the like for handling process fluids used in the semiconductor-processing industry. Clean, particle-free, nonreactive, non-trapping, ultra-pure, thermally tolerant, sealed systems are required to maintain process fluids with contaminant levels below parts per billion, or even trillion. A lip seal connects a tube, having a lip at each end, to a face of a creeping material. A creeping fluorocarbon sealing material may form the interface for reducing stress concentrations on the tube, and for providing a consistent reliable seal between the lip and the creeping face. A face seal between creeping faces may be effected by a creeping sealant there between. The faces may be loaded entirely by their own creeping structural materials. No flanges are required. In certain embodiments, retaining rings may be provided for preventing unrestrained creep of sealing assemblies.

Abstract: A sealing device for a fluidtight screw connection. When screwing in a screw to be sealed into a fluid-carrying threaded bore of a component, in order to prevent a rectangular sealing ring from extending into a gap between a radial flange of the screw and the component as a result of tangential stress, the sealing device embodies a rectangular sealing ring having a thinner thickness than a countersink into which the sealing ring is inserted. A radial flange of the screw includes a collar that protrudes into the countersink and elastically compresses the rectangular sealing ring so that the sealing ring rests sealingly against a bottom of the countersink and against the collar of the screw.