Abstract: The invention provides a device for fixing a tube or hose to an end coupling, including an element fixed by its internal face over at least a part of its length to the external face of the tube or hose, said element being adapted so as to form at its free end, distant from that fixed to the tube or hose, an annular peripheral lip having a valve forming end and cooperating with the external surface of the end coupling so as to define a chamber communicating by said end with the inner volume of the tube or hose and end coupling so that a fluid flowing through the end coupling and the tube fills said chamber so as to apply said sealing lip against the coupling with a force which is all the higher the greater the pressure in the chamber, the pressure in the chamber increasing with the pressure of the fluid flowing through the end coupling and tube or hose, but not substantially decreasing when the pressure flowing through the end coupling and hose decreases.

Abstract: A hose coupling which has an integrally moulded lip which has an innermost surface defining a frusto-conical shape and a portion of reduced thickness to provide for pivoting freedom of the lip to effect both a grip and seal of a hose that can be inserted therethrough. The lip has axially extending tails which are segmented allowing for expansion or contraction as necessary of the lip but providing a limit to the pivotal freedom of such lip.

Abstract: A means of sealing a multipath, multipass swivel whereby that part of the structure housing the seal element deflects under pressure to compensate for the overall structural deflections, such that a constant seal gap is maintained. A means of lubricating and flushing seal surfaces is also disclosed whereby a controlled liquid is injected between two seals at a higher pressure than the production fluid such that the seal between the injected liquid and the production fluid is less capable than the seal between the controlled liquid and ambient.

Abstract: A quick-connection type connector is disclosed for the coupling of high-pressure fluid flow lines, which connector utilizes an externally threaded female portion and a tapered male portion with a rotatable collar mounted thereon. Elastomeric seal means are provided as well as a metal-to-metal seal to protect the elastomeric seal means, and a locking assembly to prevent backing off of the threaded portion.

Abstract: A self-energizing pipe gasket includes a base and arm configuration projecting therefrom which cooperates with the base when pipe sections are assembled to cause the lip or sealing edge of the arm to kick away or distend towards the sealing surface of the pipe. To facilitate this action a harder insert is provided in the base in the form of a reinforcing ring providing a less compressible surface for the arm to react against. The ring also stiffens the gasket making it more difficult to dislodge upon assembly of the pipe sections enabling higher compression forces and assuring that the gasket does not go under or below the minimal compression requirements to form a sound flexible yet fluid tight seal. In one embodiment a raised portion of the arm is manufactured in contact with a surface of the base and in another embodiment the gasket includes two symmetrical arms each of which includes four surfaces.

Abstract: A quick-connect coupling for a household faucet or the like and comprising a nipple and a fitting, features an improved seal which is a resilient annulus including a band portion adapted to seal against the inside of the fitting, a wing portion extending down from the top of the band portion and an end portion on the distal end of the wing portion, the end portion including an inward rib. Preferably the rib comprises an inwardly and upwardly facing quarter round, the underside of the end portion being inclined upwardly and outwardly when the fitting is installed on the nipple, whereby the water pressure forces the end portion inward to enhance the seal.

Abstract: A sealing gasket for an unlocked roadway manhole accessing a municipal sewage system is interposed between a cover 2 and a frame 1, and has an inverted L or hook-shaped cross-section including two spaced and parallel outwardly extending upper lips 18, 19 and two lower, oppositely extending lips 17, 20.

Abstract: A tube coupling adapted particularly for medical use includes three parts, namely a female tubular element 52, a male tubular element 50, and an intermediate ring 100 carrying at least one longitudinally extending latching arm 110. The ring is dimensioned to snap-fit into an external annular groove 90 on either the male or female element and the latching arm has an inwardly-extending hook portion 112 which can engage a flange 58 on the female or the male element as the case may be. This engagement holds these two elements together in an axial direction and allows them to rotate freely relative to one another.

Abstract: A quick connect fluid coupling, and more particularly a quick connect fluid coupling having a minimum number of parts, which can be quickly assembled and disassembled, and which provides a good seal in an environment which is subject to vibrations and to relative motion between a fluid line and a port defining structure.

Abstract: A bi-directional metal-to-metal seal (10) comprising a ring with a pair of oppositely acting sealing elements (20 or 22) integral with the outer periphery of the ring. In one embodiment, two pairs of such sealing elements (20 and 22) are located on each end of the ring (as viewed in cross section) and are of a thickness to be resilient (springy) and deflectable when inserted in an interference fit relationship into a cylindrical wall or bore to be sealed. The first sealing element (24) has a curved outer surface (26) and with an opening (30) facing the main flow path of pressure fluid. The curved outer surface rolls inward against the cylindrical wall (42) while being inserted into the cylinder, partially closing the opening (30) but still allowing the pressure fluid to enter and urge the curved surface against the cylindrical wall.

Abstract: A seal system between two metal pipes (1, 2) flanges (4, 5) exposed to extreme temperatures, includes at least one elastic annular lip (11, 12) which is held by one of the flanges, with its highest point (10) in contact with the other flange to form a seal line when the flanges are assembled. The lip (11, 12) is an integral part of one of the flanges (4, 5) and it is made by lathing two grooves (13, 14; 17, 18) with one groove (13, 17) radially penetrating the cylindrical surface (15, 19) of the flange, and the other groove penetrating perpendicularly to the former in the flat surface (7, 8) of the flange to define a thinned area (16, 20) between the two grooves to ensure the elasticity of the lip (11, 12).

Abstract: The end portion of a hose is bonded to the front section of a tubular connector whose rear section surrounds the end portion of the hose and has two integral pallets whose teeth engage a circumferentially extending external rib of a nipple which receives the front section of the connector with the interposition of an annular sealing device. The rib has axially parallel passages which register with the teeth of the pallets during insertion of the front section of the connector into or during extraction of the front section of the connector from the nipple.

Abstract: A vehicle wheel end assembly (10) is adaptable for use with an on-board central tire inflation system. The assembly provides a passage for the routing of air between a central source and the vehicle tire (25). The assembly comprises a stationary spindle (12) and a rotational hub (14) mounted thereon. A collar (34) is mounted on the inboard end of the spindle in interfacing relation with an inboard extension (50) of the hub. An air chamber, defined by the radial spacing of the collar (34) and hub extension (50), communicates air passages in the collar and hub (36, 44). The chamber is fitted with a pair of rotary seals (72, 74) to seal the air passage between the stationary collar (34) and rotating hub (14). The rotary seals (72, 74) each include an integral sealing lip (80) which responds to pressurization of the chamber by biasing into sealed relation with the outer surface of the collar (34).

Abstract: A flexible pipe coupling wherein an elastic sleeve has a centrally located annular internal partition which is contracted by the end faces of the end portions of two pipes which are inserted through the respective open ends of the sleeve. The sleeve has pairs of deformable annular sealing ribs which are disposed at opposite sides of the partition and engage the peripheral surfaces of the respective pipes. The ribs are separated from the partition by annular internal grooves of the sleeve, and the external surface of the sleeve has a centrally located outer groove for the circumferentially extending corrugations of a split ring having end portions provided with projections which can be moved toward each other by a bolt and nut to deform the ribs into sealing engagement with the respective pipes.

Abstract: A stripping gland is specially designed to act on uneven surfaced leads or the like making up a bundle that extends down into a well. It includes plural interior annular grooves which accommodate flexible seals. It also has an upper cylindrical chamber that has a highly elastic stationary seal which may be compressed tightly around the bundle.

Abstract: A composite gasket for forming a seal between a pipe bell 52 and a spigot 58 comprises a major portion 12 of non-elastomeric plastic material and a minor portion 14 of elastomeric material. The minor portion is axially encased by the major portion. The minor portion includes a sealing lip 16 extending radially inwardly from the major portion. The composite gasket can be manually inserted within a preformed grooved bell or the grooved bell can be formed over the gasket while the gasket is mounted on a mandrel. The composite gasket is particularly useful with relatively large diameter pipe systems.

Abstract: A roof bolt assembly for a mine roof of the mechanical point anchor type is provided with a sealing plug to preclude the flow of mine air into the roof hole surrounding the bolt. In one embodiment, the sealing plug is frusto-conically shaped with an axial bore which surrounds the bolt rod. In another embodiment, the sealing plug is cylindrical with a first set of resilient rings on the external surface for engaging the roof hole sidewalls and with a second set of resilient rings in an axial bore for engaging the bolt rod. The sealing plug is installed in the entrance of the roof hole out of contact with components of the assembly tensioning mechanism.

Abstract: A gasket for sealing the gap between two approximately parallel sealing surfaces which are displaced axially relative to each other during the assembly, during which the gasket follows one of the sealing surfaces and is compressed between said surface and the other sealing surface. The gasket body which is made of a soft elastic material, for example rubber, consists of two main parts (1) and (2) which are connected through a narrower connection part in such a manner that the sliding part (2) can pivot relative to the attachment part (1). To avoid a relative rotation of the gasket parts such that the assembly becomes unsuccessful, the axis of the connection part (3) extends diagonally from the point of attack (A) on the sliding part (2), towards the supporting surface (7) on the attachment part (1). The sliding part (2) may have a concave surface (4), and the connection piece (3) can have a less stiffness than the sliding part (2). The attachment part (1) can be connected to a reinforcement (17 ).

Abstract: A sprinkler including a housing, a riser and a riser seal element is disclosed. The housing has a hollow interior with an upward-inward slanted, conical shaped seal element receiving slot. The riser is mounted in the hollow interior of the housing for reciprocating motion between an extended sprinkling position and the retracted non-sprinkling position. The riser has an exterior surface along its length and the housing has an interior surface at its upper end between which a gap is defined. The riser seal element is comprised of an elastic material and has an outer portion which is held in the seal element receiving slot to thereby position the seal element in an upward, generally conical orientation. An inner portion of the seal element extends into the gap to form a seal therein for preventing the entry of extraneous material through the gap. The inner portion of the seal element is flexible between an upwardly slanted position and a downwardly flexed position.

Abstract: A sealing ring for sealing a space between the outer surface of a spigot end and the inner surface of a socket end in a pipe joint comprises an annular sealing element consisting of elastomeric material and a substantially annular locking element consisting of a rigid or semi-rigid material. The locking element is divided at at least one point of its periphery and constitute at this point two spaced portions. Between these portions there is positioned a connecting element consisting of a material which is substantially more elastic than the material of the locking element.

Abstract: A gasket particularly suited for providing a leak resistant, deflection tolerant seal for a bell and spigot type of pipe coupling is provided. The gasket comprises a rubber web having a plurality of identical sealing ribs projecting radially inward in axially spaced relation. Each rib has an enlarged tapered base portion and a narrow finger portion which inclines inwardly and axially therefrom in cantilever fashion and which terminates in a tip spaced radially from the base of an axially adjacent rib. The finger portions are deflected into engagement with their adjacent sealing ribs when the spigot portion of one pipe is inserted axially into the bell portion of the other in which the gasket is mounted. The sealing ring prevent leakage even when the coupled pipes are misaligned slightly.

Abstract: An improved drop box for septic systems is disclosed including a generally rectangular-shaped, tapered box member, a plurality of invert openings formed on the sidewalls thereof, a locking lid having structural support elements operable to transfer weight carried by the lid to the box's sidewalls, and improved seal means snap-fitted to each invert opening which act to sealingly receive a drain pipe forcibly inserted therethrough. A membrane-type seal plug is provided to block off any unused invert opening. An alternate version of the improved seal means having turbine-blade stiffening means is also disclosed.

Abstract: A mounting ring of synthetic material for fitting two pipe sections in place relative to each other, has a radial flange (1) and an axial neck (2). Tongues (3, 4, 5, 6) of differing lengths extend radially inwardly and radially outwardly from the neck. These tongues are preferably formed as part of the ring, for example, when molding the ring of synthetic material. The longer radially outer tongues bend over, snap into a groove, and center the ring in a pipe socket. The shorter radially outer tongues support the ring in the socket. When a pipe end is inserted into the socket through the ring the longer radially inner tongues bend and center the pipe in the socket while the shorter radially inner tongues support the pipe end. Thus, the inner surfaces of the pipe sections remain in alignment with each other because the shorter tongues act like spokes against forces acting crosswise on the pipe sections relative to their length.

Abstract: A gasket for the tight coupling of pipes having an outer face adapted to cooperate with the cylindrical bearing surface of the female end of a pipe, a succession of annular ribs each taking, in cross section, the form of an asymmetrical tooth, two annular housings opening via slots in the inner face and adapted to receive two rigid annular cores, and two mouldings of prismatic cross section and inclined towards the edge of engagement of said gasket in the female end. The invention is more particularly applicable to underground pipes for the circulation of sewage.

Abstract: A composite gasket for forming a seal between a pipe bell 52 and a spigot 58 comprises a major portion 12 of non-elastomeric plastic material and a minor portion 14 of elastomeric material. The minor portion is axially encased by the major portion. The minor portion includes a sealing lip 16 extending radially inwardly from the major portion. The composite gasket can be manually inserted within a preformed grooved bell or the grooved bell can be formed over the gasket while the gasket is mounted on a mandrel.

Abstract: A pipe coupling wherein an elastic sleeve receives the end portions of two pipes and has a partition which extends between the end portions of the pipes. The sleeve is surrounded by a split ring in the form of a band whose end portions are spot welded to strip-shaped female components of a device for tightening the band around the sleeve. The median sections of the female components define with the band two aligned passages for the shank of a bolt whose head can be rotated to move it nearer to a nut which meshes with the shank and extends into a centrally located corrugation of the band. The head and nut flank the median sections of the two female components of the tightening device. Each end section of each of the two female components is welded to the adjacent portions of the band at two or more locations which are disposed at different distances from the gap between the two components.

Abstract: In one form of the invention, the swivel hose couplings include two parts, a swivel insert which may be threaded or otherwise attached to the end of the hose, and a swivel hose end piece which has an internal groove therein in which an exterior portion of the swivel is rotatably received. A sealing lip may be provided on the exterior of the swivel insert to form a seal with the wall of the internal groove in the swivel hose end piece. Also, a skirt portion may be provided on the swivel hose end piece which extends axially into the end of the hose to shield the axial outer end of the swivel insert and hose end against entrained material in the fluid passing through the coupling from entering the swivel connection between the swivel insert and swivel hose end piece.

Abstract: A ring for the leak-proof and traction-resistant joining of the ends of two pipes which surround one another at a radial distance, made of a basic body of soft-elastic, resilient material having cylindrical contact surfaces engaging the pipes, and of a cone ring of unyielding material embedded therein, which is defined radially inwardly and outwardly by cone surfaces, in which cone ring the cone surfaces are inclined in the same direction and are at a distance from the surface of the oppositely-lying or confronting pipe which diminishes increasingly with increasing distance from its end.

Abstract: A sprinkler including a housing, a riser and a riser seal element is disclosed. The housing has a hollow interior with an upward-inward slanted, conical shaped seal element receiving slot. The riser is mounted in the hollow interior of the housing for reciprocating motion between an extended sprinkling position and the retracted non-sprinkling position. The riser has an exterior surface along its length and the housing has an interior surface at its upper end between which a gap is defined. The riser seal element is comprised of an elastic material and has an outer portion which is held in the seal element receiving slot to thereby position the seal element in an upward, generally conical orientation. An inner portion of the seal element extends into the gap to form a seal therein for preventing the entry of extraneous material through the gap. The inner portion of the seal element is flexible between an upwardly slanted position and a downwardly flexed position.

Abstract: A gasket assembly suitable for sealing between two pipe members in a high pressure pipeline includes an annular gasket body made of a resilent material. The body terminates radially inwardly in a leading lip and a pressure actuated sealing lip. The leading lip has a pipe centering and cleaning face and a compression sealing face. An enclosed annular groove is provided in the gasket body with an annular retaining ring being provided in the groove. The ring is made of a material harder than the gasket body and functions to retain the gasket body in the pipe groove.

Abstract: A nipple for use in a Christmas tree bypass tool has an outer, molded rubber sleeve thereon and an inner steel insert, a portion of which forms a seal against a skirt on the rubber sleeve. The seal between the insert and the skirt prevents high pressure in the tool from reaching and acting on the bond between the rubber sleeve and the nipple.

Abstract: A leak repair clamp for pipe and pipe flanges includes a frame having a plurality of one piece frame segments positionable in end-to-end relationship around the pipe. Each segment includes a pair of spaced apart metal lips which are adapted to form a metal-to-metal seal with a pipe or flanges when the frame segments are connected together. Access means are provided in each frame segment to permit the passes of liquid sealant into the recess defined by the lips and the pipe.

Abstract: A sealing body for a pipe connection bonded chemically and/or mechanically to a fixation part being attachable to an end portion of a socket pipe. The fixation part consists of plastic material or of reticulated elastomer.

Abstract: A self aligning concrete pipe and method of producing the self aligning concrete pipe to improve the seal of the joint cooperatively formed between adjacent concrete pipes wherein each concrete pipe includes a male and female joint member formed on opposite ends thereof to operatively engage the corresponding joint member formed on the next adjacent concrete pipe to form the joint therebetween, the male joint member including a tongue element of predetermined peripheral configuration extending outwardly from the concrete pipe having a resilient seal attached thereto offset inwardly from the outer end thereof, the female joint member including a groove element extending inwardly from the opposite end of the concrete pipe comprising an initial alignment stage, intermediate alignment stage and final seat recess stage, the initial alignment stage including an axial alignment camming surface of decreasing diameter having a linear dimension equal to or less than the inward offset of the resilient seal from the oute

Abstract: A connection system for respirator or anesthesia units with a Y-piece including an inhalation hose socket, an exhalation hose socket and a connector attachment piece as well as a tubular connector, connectable with the connector attachment piece, having a tube attachment for an endotracheal tube at one end, and at its opposite end a continuous annular groove in its exterior circumference, the connector attachment piece including a spring biased fastening member provided transversely to the longitudinal axis of the connector attachment piece for elastically engaging the annular groove under spring action. The connection system further includes a hand-operable unfastening mechanism for overriding the spring action of the fastening member, and the fastening member includes a lever having inner and outer arms, a pivot and a spring-loading member for the outer arm.

Abstract: A connecting pipe part of a resilient material for connecting a closet bowl to a drain conduit comprises on one end a female part for receiving an outlet of a closet bowl and on the other end a male part to be received into a drain pipe or conduit, while a sealing sleeve connected with the female part extends within the female part.Said sealing sleeve merges through a discontinuously thinned transition. Into the female part, the thickness of the sleeve being thinner than the thickness of the female part.The transition is preferably located halfway in a plane parallel to the inner wall of the female part, said plane being located midway between the inner side of the female part and the extension of the inner side of the male part.End part support members extend in the direction of the male part.

Abstract: A non-ferrous pipe coupling comprises tubular threaded male and female coupling elements attached to ends of respective pipe sections. The male element terminates in a cylindrical non-threaded, non-tapering sealing surface adjacent its threads and the female coupling element, which may be filament-wound, includes an internal sealing sleeve or liner with a web that provides a lip seal around the cylindrical sealing surface of the male element. The web is urged into sealing engagement with the cylindrical surface by fluid pressure within the coupling. The liner precludes egress of fluid from within the coupling through the female coupling element.

Abstract: A tube coupling for coupling together one tube to another tube which have predetermined interior and exterior diameters comprises an outer sleeve which has an interior bore with a sealing element lining the bore of an elastic material. The sealing element has an exterior positively engaged sleeve and for this purpose advantageously includes exterior radially extending ribs which engage into dovetail radially extending grooves of the outer sleeve. The sealing element lining the bore of the tube is of an elastic material and it is formed substantially symmetrically in respect to its radial mid plane and includes at each end a plurality of inwardly directed sets of sealing protuberances following each other with cavities adjacent these protuberances into which the protuberances can be deflected by the engaged tube.

Abstract: The invention relates to a device for connecting flanged pipes. For this purpose, a multiple-section clamp is mainly used which includes inwardly protruding flanges engaging beyond the collars of the pipe ends. An annular profiled seal forms an approximately U-shaped hollow profile with the shanks which are formed as sealing lips and which abut against the peripheral surfaces of the collars. The assembly of the profiled seal is difficult. The sealing effect is often impaired by the peripheral surfaces of the collars being no longer sufficiently even and smooth. These drawbacks are removed by the invention such that the profiled seal has an inner profiled section extending between the faces of the collars and that the outer surfaces of the outer profiled section surrounding the peripheral surfaces of the collars are reinforced at a guide ring. Thus, the particular sealing region is disposed between the faces of the collars.

Abstract: A self energizing pipe gasket includes a base and arm configuration projecting therefrom which cooperates with the base when pipe sections are assembled to cause the lip or sealing edge of the arm to kick away or distend toward the sealing surface of the pipe. To facilitate this action a harder insert is provided in the base in the form of a reinforcing ring providing a less compressible surface for the arm to react against. The ring also stiffens the gasket making it more difficult to dislodge upon assembly of the pipe sections enabling higher compression forces and assuring that the gasket does not go under or below the minimal compression requirements to form a sound flexible yet fluid tight seal.

Abstract: An expendable adaptor for quick coupling flexible hoses to a variety of devices such as oxygen breathing equipment and including an enlarged deformable head portion having at least a pair of concentric sleeves the inner of which is axially recessed so that its forward face engages an end edge of a complementary coupling fitting in sealing relationship while the outer sleeve surrounds the fitting in a secondary sealing as well as anchoring relationship.

Abstract: A connector for coupling a hose to a faucet or the like includes two molded plastic members which are coupled together by a bayonet-type connection. One member carries a resilient seal which has an annular lip inclined radially inwardly and axially toward an axially facing annular sealing surface on the other member. When the members are coupled, the lip flattens against the sealing surface to form a seal between the members and, in this condition of the parts, the resiliency of the lip also produces a force which keeps the bayonet-type connection in the locked position. When the members are being coupled while water is running through the member with the seal, an annular groove in the sealing surface causes water to backwash and clean the sealing side of the lip as well as the sealing surface itself.

Abstract: Method for uniting a plastic fixation part with a sealing body comprising a head end and a sealing sleeve, by first molding the sealing body and subsequently molding the plastic fixation part around the head end of the sealing body, thereby protecting the sealing sleeve. The fixation part is provided with corrugations for connecting said fixation part with a socket pipe provided with corrugations on its outer side.The method may be carried out in an apparatus comprising a first mold part, a second mold part and a third mold part forming together a molding space for forming the sealing body and a forth mold part replacing the first mold part, forms a molding space for molding the fixation part.

Abstract: A three component coupling assembly consisting essentially of plastic male and female coupling members and an annular seal. The female member has a male fitting engaging end portion formed with interior threads for cooperatively threadedly engaging a threaded male hose fitting. The remaining female coupling portion has a generally cylindrical interior periphery of a smaller diameter size defining at a position adjacent the inner end of the interior threads an annular shoulder. The interior periphery has formed therein a plurality of annularly spaced grooves extending from the outer end thereof through the annular shoulder and a corresponding plurality of correspondingly annularly spaced notches extending from the annular shoulder toward the outer end. The seal has an outer annular portion seaingly engaging an uninterrupted outer sealing surface of the shoulder and an inner annular portion extending over the notches and grooves formed in the shoulder.

Abstract: An axle wheel end assembly (10) is provided for vehicles having an onboard tire inflation system (12). The wheel end assembly includes a rotary seal assembly (68) defining an annular air chamber (70) which seal assembly is received in a relatively protected inboardly opening annular space (69) defined by an axle spindle surface (66) and an axially inboardly extending sleeve (62) of the hub (42). Open/close valve member (110) is located outboard of the hub flange (50) interposed the fluid connections between the annular air chamber (70) and the opening (120) to the tire rim (122) for isolating the interior of the tire rim from the inflation system for storage and/or steady state driving conditions.

Abstract: A resilient gasket having an outer annular flange positioned within a manhole opening and maintained thereagainst under compression by means of a compression band. The gasket is provided with a central opening defined by an enlarged beaded periphery having an elasticity adapted to tightly encircle the outer periphery of the pipe. A folded intermediate section is arranged between and integrally joined to the outer flange and the beaded inner periphery, the intermediate section is comprised of first and second diagonally aligned annular portions integrally joined along a fold to define a V-shape which imparts a yieldability enabling the gasket to maintain a watertight seal between the manhole opening and the pipe, even in the presence of a significant misalignment therebetween. A strap is positioned about the intermediate section of the gasket adjacent the inner beaded periphery to enhance the watertight seal between the gasket and the pipe.

Abstract: A sealing ring for sealing the space between two substantially cylindrical, concentric surfaces, as for example, the outer surface of a spigot end of a pipe and the inner surface of a socket.The sealing ring comprises a main portion adapted sealingly to engage one of the surfaces and a sealing lip projecting from said main portion. The sealing lip is adapted to engage the other of said surfaces while being deflected against the main portion.The main portion includes a projecting engagement part which is engaged by the free end portion of the sealing lip when the sealing lip is deflected against the main portion.

Abstract: A new and improved seal for an overshot and method for doing same wherein the seal includes a seal ring body mounted with the overshot, the seal ring body having a first and second sealing lip formed therewith and extending inwardly into the bore of the overshot, with the first sealing lip for initially engaging the tubular member to reduce fluid flow therebetween and the second sealing lip, spaced above the first sealing lip, for establishing a fluid-tight relation between the second sealing lip and the tubular member for preventing fluid flow therebetween.

Abstract: Reinforced sealing ring for reception in a pipe joint between an annular groove-carrying socket end and an insert end. The sealing ring consists of a main body of rubber in which there is embedded an upsplit steel ring. The sealing ring is adapted to be elastically deformable to such a degree that it can be snapped into place in the annular groove of the socket end by a simple mounting operation while it can be prevented from being torn or pressed unintentionally outwards from the annular groove after mounting. In order to achieve this the main body has a largest external diameter of between 1.08D+16 mm and 1.04D+8 mm, while the cross-sectional diameter or thickness of the steel ring is between 0.01D+2 mm and 0.005D+1 mm, where D constitutes the diameter of the pipe. The steel ring is disposed embedded in a central and/or radially outer cross-sectional portion of the main body.

Abstract: Pipe with socket end provided with an annular groove chamber containing a sealing ring supported by a support ring, which support ring compresses the sealing ring less than the final inserted spigot end. The support ring closes the groove and the sealing ring or the closed space is provided with lubricant.