Abstract: A method for inhibiting separation of joined pipes including providing within a pipe bell a gasket including rigid segments, each segment having bell teeth configured for engaging the bell and a spigot tooth configured for engaging a pipe spigot seated in the bell. Upon pressurization and over-pressurization of the joint, resulting axial forces exerted on the joint, which can cause pipes to separate, are countered by wedging the segments between the bell and the spigot and rotating each segment so that the thrust forces are directed radially. To prevent radially-directed thrust forces from damaging the joint through over-rotation of the segments, the bell teeth and the spigot tooth are adapted and arranged to maintain the thrust forces load path carried by each segment within a desired angular range relative to the spigot by transferring the load path between adjacent bell teeth whereby the effective length of each segment is increased.

Abstract: A fitting assembly for fluid device is provided, which includes a first port, a second port, a first annular member, a second annular member, and a connector. The first port is annular and installed at a first fluid device to be connected with its first fluid channel. The second port is annular and installed at a second fluid device to be connected with its second fluid channel. The first annular member is installed at the first port and has a first coupler. The second annular member is installed at the second port and has a second coupler to be coupled with the first coupler to fix the second annular member to the first annular member. The connector is installed between the first port and the second port and seals gaps between the connector and the first and second ports.

Abstract: An air control valve assembly includes a semi-tractor that has an air brake system and a tanker trailer for containing a liquid. A gladhand air fitting is fluidly attachable to the air brake system and a valve is fluidly coupled to the gladhand air fitting. The valve is positionable in an open position to pass air through the valve and the valve is positionable in a closed position to inhibit air from passing through the valve. An air king fitting is fluidly coupled to the valve to receive the compressed air from the valve when the valve is in the open position. The air king fitting is releasably matable to the tanker trailer having the air king fitting. In this way the air king fitting can pressurize the interior of the tanker trailer for discharging fluid contained in the tanker trailer.

Abstract: A sealing device includes a reinforcing ring formed annularly around an axis and an elastic body part that is formed from an elastic body attached to the reinforcing ring and that is formed annularly around the axis. The reinforcing ring includes a tubular portion having a cylindrical shape around the axis and a flange projecting annularly from an outer end portion of the tubular portion to an inner periphery side. The elastic body part includes a lip portion that is an annular portion covering the flange from an outer side, projecting from the flange toward the outer side in a direction of the axis, and projecting toward the inner periphery side in a radial direction. The lip portion includes a seal lip portion that is an annular portion projecting toward the outer side in the direction of the axis and a secondary lip portion that is an annular portion projecting toward an inner side in the direction of the axis.

Abstract: A press fitting device, components and method provide one or more indicators to provide a visual indication that the fitting has been properly pressed around a tube and that the correct amount of pressure has been provided to create a permanent seal. In embodiments, a sealing ring and a latching band are retained within a main body component of the fitting and the latching band can be formed with a radially inwardly extending latch that extends through an opening in the sealing ring.

Abstract: A fluid coupling has two similar coupling halves, each with a rotary body of a valve. A drive device for closing/opening the valve is associated with each rotary body. Each half has a coupling means for connecting/decoupling the halves by relative rotation. Securing means secure the connection when at least one valve is open and close the two rotary valves to disconnect/connect the halves. The drive device is arranged on one half and has a drive shaft which is associated with a valve shaft of the rotary body of the other half. A locking connection is configured which, when the halves are connected, connects the drive shaft on one half to the valve shaft on the other in a non-rotatable/releasable manner such that the rotation of the rotary body is controllable and relative rotation of the halves is blocked but the relative rotation when the valves are closed is permitted.

Abstract: Example aspects of a pipe repair device and a method of repairing a pipe are disclosed. The pipe repair device can comprise a gasket defining a substantially cylindrical shape, the gasket defining a gasket top end and a gasket bottom end opposite the gasket top end, a gasket outer surface, and a gasket inner surface opposite the gasket outer surface, a top annular seal oriented at the gasket top end and a bottom annular seal oriented at the gasket bottom end, wherein each of the top and bottom annular seals extend substantially radially outward from the gasket outer surface; and a spring engaging the gasket inner surface and biasing the pipe repair device to an expanded configuration, wherein the gasket, top annular seal, and bottom annular seal are configured to engage an inner wall of a pipe in the expanded configuration.

Abstract: There is proposed an annular seal for a pipe coupling, comprising, a lower portion beatable within an upwardly open annular groove in the pipe coupling, an upper portion having an upwardly facing abutment surface, a depending skirt and a stiffening ring. The depending skirt is configured for engagement over a circular upstand of the pipe coupling, which is located inwardly of the annular groove. The stiffening ring is located within the upper portion of the annular seal, and includes an annular portion that is generally parallel with and spaced apart from the abutment surface and at least one circumferential leg depending from the annular portion that provides reinforcement for the depending leg.

Abstract: A fitting apparatus for connecting pipes according to the present invention includes a fitting unit which includes a first body into which a first pipe is inserted and a second body which is connected to the first body to form a pipe insertion space therein together with the first body and into which a second pipe is inserted, wherein in the first body and the second body, a first recessed groove and a second recessed groove spaced apart inward from the first recessed groove are formed along an inner circumferential surface thereof, respectively, a compression member which is provided in the first recessed groove to compress and fix the first pipe or the second pipe, and a sealing member which is provided in the second recessed groove to maintain airtightness between the fitting unit and the first pipe or between the fitting unit and the second pipe.

Abstract: The disclosure relates to a clamping device and method of securing a clamping device. The clamping device is suitable for clamping an elongate member, and includes a body portion for surrounding the elongate element and configured to apply a compressive force on the elongate member. The body portion includes at least two outwardly curved plates.

Abstract: A collar for use on a water filtration tank adapter. The collar is formed as a ring adapted to thread onto the tank connection end of the adapter and abut the nut portion between the tank connection end and the pipe end of adapter. An o-ring, square in cross-section, is disposed on a top surface of the collar, offset medially towards the center. This top o-ring is adapted to abut the nut portion of the adapter. Another o-ring, square in cross-section, is disposed on the bottom surface, offset medially away from the center. This bottom o-ring is adapted to abut the tank head upon use. Accordingly, a water-tight seal is formed at the tank connection end and tank head, the collar functioning as both a positive stop and as a substitute for pipe tape.

Abstract: A seating and restraint system is shown for joining the spigot and socket ends of two sections of plastic pipe to form a pipe joint. The socket pipe ends are preformed at the factory with an internal raceway which receives both a sealing ring and a companion gripping ring. The sealing ring is an elastomeric member having a periphery with a protruding ear formed at one circumferential location. The companion gripping ring is a hardened member having one opening gap in the circumference thereof. The protruding ear on the sealing ring fits within the opening gap in the gripping ring, engagement of the protruding ear within the opening gap serving to prevent extrusion of the sealing ring within the gap in the gripping ring and also limiting closure of the gripping ring after engagement of the spigot end with the socket pipe end as the pipe joint is assembled.

Abstract: A seal ring for an electrochemical processor does not slip or deflect laterally when pressed against a wafer surface. The seal ring may be on a rotor of the processor, with the seal ring having an outer wall joined to a tip arc through an end. The outer wall may be a straight wall. A relatively rigid support ring may be attached to the seal ring, to provide a more precise sealing dimension. Knife edge seal rings that slip or deflect laterally on the wafer surface may also be used. In these designs, the slipping is substantially uniform and consistent, resulting in improved performance.

Abstract: A dual drill pipe joint includes a pin end and a box end. An inner pipe is disposed within an internal bore of the joint of drill pipe. A retainer is disposed proximate each longitudinal end of the inner pipe. A retaining feature is formed in an interior of the joint of drill pipe proximate each longitudinal end. The features are configured to engage a respective one of the retainers so that the inner pipe is held in longitudinally fixed relation to the joint of drill pipe.

Abstract: A seal assembly for a nested dual drill pipe includes a tube having a female seal assembly and a male seal assembly at the longitudinal ends. The female seal assembly includes a larger internal diameter portion, a taper adjacent thereto and a smaller internal diameter portion adjacent to the taper. The male seal assembly includes a smaller external diameter portion, a seal groove adjacent thereto and a larger external diameter portion adjacent to the seal groove. The smaller internal diameter portion and the larger external diameter portion have diameters selected to enable free longitudinal movement of the male seal assembly into the female seal assembly while limiting axial displacement to maintain the seal ring fully energized.

Abstract: A metal seal replaces an O-ring seal in a flat face seal fluid fitting to adapt the flat face seal fluid fitting to use, for example, in extreme temperature applications. The fitting includes first and second fitting members, a sleeve, a nut and the seal. The seal may be removably attached to one of the fitting members by a plurality of retainers that extend into an O-ring channel of the fitting and cooperate with an O-ring retainer wall.

Abstract: Gaskets for use with a bell and spigot coupling system are disclosed herein. The gasket comprises an elastomeric member having a front edge, a first section, and a second section. Axial forces generated by the insertion of the spigot to the first section of the elastomeric member displace the first section of the elastomeric member in an axial and radial direction.

Abstract: A quick connector coupling for a fluid line includes a female connector body defining a through bore, a tubular male member with a raised annular upset, and a retainer demountably coupled to the connector body. A seal assembly provides a fluid tight seal between the tube and body bore. A separate outer spacer is secured to the body to receive axial load of the seal assembly. The body defines spaced arcuate locking ledges having axially inward facing radial locking surfaces. The outer spacer is a continuous annular element includes an integral radial ring defining an annular axially outward facing radial abutment surface in radial abutting relation to the locking surfaces of said body ledges.

Abstract: Coupling members each have a fluid channel having an opening passageway orthogonal to an abutting end face of the coupling member, and a slanting main passageway communicating with the opening passageway. The opening passageway has diameter equal to the inside diameter of a gasket holding annular ridge of the coupling member. A gasket has an inside diameter smaller than the diameter of the opening passageway.

Abstract: Disclosed is a method of assembling three-dimensional display apparatus, comprising the steps of: providing a support unit comprising a projector mounting and a screen mounting surface with a first aperture therethrough; providing a screen unit, the screen unit comprising a diaphragm and an inflatable screen affixed thereto, the diaphragm defining a second aperture in communication with the interior of the inflatable screen; bringing the screen mounting surface and the diaphragm into contact so as to align the first aperture with the second aperture; and securing the support unit to the screen unit to thereby create a seal between the support surface and the diaphragm around the first and second apertures, wherein the seal is sufficiently gas tight to enable inflation of the screen.

Abstract: A sealing arrangement for a coupling for refrigerant lines comprises a first coupling piece, which is connected sealingly to a first line end piece, and a second coupling piece which is connected sealingly to a second line end piece. In the sealing arrangement, a sealing ring is held on the sealing face of one of the two coupling pieces by a holding device which is configured as a plastic cap having a through hole. The plastic cap has at least one predetermined breaking location (26) which is configured as a groove which reduces the material thickness of the plastic cap in such a way that the material integrity at the predetermined breaking location (26) is maintained during assembly and breaks apart during disassembly.

Abstract: The pest control seal for a recreational vehicle (RV) comprises a relatively soft and resilient foam material, which is compressed into the annular opening between the conduit and a passage through the wall or panel of the service compartment of the RV, and a relatively thin, hard retainer, which is attached to the rim or flange of the hose or conduit opening or passage. The foam material and retainer may be attached to each other, or may be installed as separate pieces held in place by compression and suitable fasteners. The retainer may be formed as two semicircular components, or as a single annular piece.

Abstract: A gasket retention system and flange coupling has a ring gasket that disposes in seal seats on opposing flanges. One or more retainer tabs extend from an outer periphery of the ring gasket. Preferably, the ring gasket defines a slot on the outer periphery, and the retainer tab affixes with an interference fit in the slot to be held therein. The retainer tab defines a transverse opening therethrough. When the ring gasket fits into the seal seat of one of the flanges, the transverse opening of the tab fits onto a fastener affixed in a pre-drilled hole in the face of the flange.

Abstract: An assembly comprises a multi-use torque fitting, a length of tubing, and a compressible ferrule, wherein the assembly is configured to couple an end of the length of tubing to a port of a fluid-handling device in a hermetically sealed or substantially leak-proof manner. Generally, the fitting is configured to provide a degree of compression to the compressible ferrule sufficient to prevent fluid leakage at the ferrule/port interface. This fitting generally comprises a threaded body portion and a torque-limiting body portion, wherein the threaded body portion and the torque-limiting body portion are arranged concentrically along a longitudinal axis of the fitting.

Abstract: A connector assembly and method of creating a connection is described. The connector assembly includes a connector fitting having at least one receiving component on an end of the connector fitting and a gasket having at least one appendage, where the at least one appendage of the gasket engages the at least one receiving component to create an at least temporary secured attachment of the gasket to the connector fitting end.

Abstract: An object of the present invention is to provide a fluid coupling, even if it has a large diameter, in which a coupling member can be readily retained by a retainer and the retainer can be readily attached to or detached from the coupling member, and a retainer for such a fluid coupling. A retainer 5 includes an annular gasket retaining portion 21 for retaining a gasket 4 therein and an annular coupling member retaining portion 22 which has an inner diameter greater than that of the gasket retaining portion 21 and retains one coupling member 2. At an inner circumference of the gasket retaining portion 21 and an inner circumference of the coupling member retaining portion 22 are formed annular grooves 23 and 24, respectively, for holding therein elastic rings 25 and 26, respectively.

Abstract: A pipe fitting, useable in the installation of a sprinkler head, includes (a) a body having an open upstream end and an open downstream end, the downstream end having internal threads capable of accepting a threaded male fitting, the body defining an gasket retention area located upstream of the internal threads; and (b) an gasket disposed within the gasket retention area. The gasket retention area and the gasket are chosen so that a threaded male fitting threadedly disposed within the downstream end of the body can be rotated within the downstream end of the body 360° while remaining liquid tight for pressures in excess of 300 psig.

Abstract: A composite gland sealing for the interlocking coupling of a housing end piece (8) including an anchoring groove (82), a plastic ring (14) and several locking inserts (20). Each locking insert (20) includes a radially external head (30) provided with a first front projection (50, 52) applicable against the annular front surface (90) of the anchoring groove (82). The head (30) comprises includes a second frontal projection (52, 50) radially shifted from the first front projection (50, 52).

Abstract: An inexpensively manufactured coupling structure (21) for an absorption refrigeration circuit includes a gasket (27) held between two coupling members (23, 26). The gasket has a protruding part (32) that elastically de-forms when clamped between adjoining faces (22, 25) of the two coupling members.

Abstract: This invention relates to pipe coupling with multi-combed, self-pressurizing internal seals and an integral pipe fastening system to join and seal pipes of all sizes, fluid contents and line pressures. The invention embodies a coupling body, two pressure responsive seals installed in recessed seal grooves located at opposite outside edges of the pipe coupling body, and seal body consisting of a unidirectional fluid inlet and internal pressure responsive chamber and an external sealing surface comprised of several resilient, multi-combed and conjoined lips and fluid pockets which form a series of redundant seals around the outside axial surface of pipes joined within the coupling. Fluid escaping from the pipe juncture enters the internal pressure responsive chamber through the unidirectional orifice wherein trapped fluids expand the pliable external multi-combed seal surface against the axial surface of each pipe with corresponding force to prevent the outward flow of fluid from the pipe coupling.

Abstract: A restrained pipe joining system is shown comprising male and female ends each having aligned circumferential grooves which form a canal for passage of a locking key strap. During manufacture, the female belled end is sequentially formed over a Rieber style gasket and then over a ring shaped casing member having an inner circumferential groove formed on its inner circumferential surface. Preferably, the ring shaped casing has circumferentially spaced teeth that act as a pipe stop in cooperation with an outer circumferential groove on the male spigot to index the pipes to be coupled.

Abstract: A chamber interface sealing assembly includes first and second chambers with respective first and second mating walls disposed adjacent each other. The first and second mating walls have respective through holes, which are aligned to form a passage interconnecting the first and second chambers. A first flange extends outwardly from the first mating wall and away from the passage. A second flange extends outwardly from the second mating wall and away from the passage. The first and second flanges define a circumferential concave groove therebetween. A close-loop gasket is disposed within the circumferential concave groove.

Abstract: A pipe fitting, useable in the installation of a sprinkler head, includes (a) a body having an open upstream end and an open downstream end, the downstream end having internal threads capable of accepting a threaded male fitting, the body defining an gasket retention area located upstream of the internal threads; and (b) an gasket disposed within the gasket retention area. The gasket retention area and the gasket are chosen so that a threaded male fitting threadedly disposed within the downstream end of the body can be rotated within the downstream end of the body 360° while remaining liquid tight for pressures in excess of 300 psig.

Abstract: A pipe connecting structure including a male flange block combined with a first pipe and a female flange block combined with a second pipe, which is fastened to the male flange block by a fastener, where a protrusion having a hole that communicates with the first pipe is formed through the male flange block, and an insert portion into which the protrusion is inserted is formed through the female flange block, and a sealing member to closely contact with the end face of the protrusion is seated on the bottom inside the insert portion, and the sealing member includes an inner sealing part of soft metal and an outer sealing part of rubber tightly fitted around the outer circumference of the inner sealing part.

Abstract: A fluid fixture has a body defining an inner peripheral bore to receive a tube. A securement member secures a tube within the body. The securement member is positioned within the inner peripheral bore of said body. A pair of O-rings are spaced along a central axis of the bore. An O-ring spacer is positioned intermediate the O-rings. The O-ring spacer has a nominal outer periphery which is smaller than an inner diameter of the inner peripheral bore. The nominal outer surface includes radially outwardly extending portions which are sized to be larger than the inner diameter of the bore, such that the portions contact the bore, and center the spacer.

Abstract: A clamping apparatus for allowing pre-close-out access to the head of a Stirling machine and facilitating subsequent close-out welding of the head. The head is axially separable into removable and fixed portions that engage each other. Each portion has an annular flange extending radially outwardly at its engaging end, and each flange has an annular groove. O-rings are seated in the grooves. A temporary sealing ring surrounds and engages the O-rings. Clamping rings seat against axially opposite sides of the abutting annular flanges. Fasteners draw the rings together, thereby drawing the fixed and removable portions of the head together and securing them against relative axial movement. For close-out of the machine, the clamping rings, temporary sealing ring, and O-rings are removed and the grooved annular flanges serve as weld reliefs for final hermetic close-out welding.

Abstract: An outer ring of a clamp-type joint for vacuum apparatus is disclosed. The joint includes a base forming an outer circumferential side and a pair of brims respectively extending from the top and bottom of the base toward the center axis of the joint, the inner side of the brims on which the brims come into contact with the O-ring being in the form of a convex sector, of which the arc faces the O-ring. The radius r of the circle forming the sector is 0.6-2.5 mm and the thickness (t0) satisfies the following formula: t1?0.2?t0?t1+0.4. In the formula, t1 is a thickness (mm) of the center ring at the point at which the center ring engages with the O-ring. The clamp-type joint can exhibit stable sealing performance at a high temperature of 250° C. or more without cracking of the O-ring.

Abstract: A connecting assembly for coolant lines, in particular for motor vehicle air conditioning systems which are operated with CO2, from a first coupling element that can be connected to a first line end piece, and a further air conditioning circuit component. The first coupling element and the air conditioning circuit component are joined by a screw so that the first line end piece and the air conditioning circuit component are connected to one another by means of one bore each and radially extending sealing faces. A sealing ring is arranged between the faces. A space holder is arranged between the first coupling element and the further air conditioning circuit component. The first line end piece has a radially extending sealing face which is produced by plastic deformation of the line end piece without removing material. The first coupling element has an annular collar which presses the sealing face onto the sealing ring in the mounted state.

Abstract: A pipe fitting is made of plastic, such as polysulphone PSU or polyphenylsulphone PPSU. At least one end of the pipe fitting (1) comprises an external thread (2) for connecting the pipe fitting (1) to a mounting element, such as a pipe or a mounting piece, e.g. a tap. The thread (2) comprises a ridge (3). Between the ridges (3) there is a continuous helical groove (4). On the bottom of the groove (4) between the ridges (3) of the thread (2) there are protrusions (5).

Abstract: An apparatus according to which the apparatus includes a pair of connected arcuate members for clamping around a pipe, with each arcuate member including at least one protrusion. The arcuate members have a first material hardness and at least a portion of the at least one protrusion has a second material hardness that is greater than the first material hardness so that the portion penetratingly engages the pipe when the arcuate members are clamped around the pipe.

Abstract: An O-ring has a flange which includes a plurality of slots, such that, when inserted into an annular groove of a pipe fitting before crimping, the slots allow the flow of fluid therethrough, such that an installation would not pass pressure tests until such time as a proper crimp has been made. Such a design allows the use of conventional push-on pipe connections by utilizing a unique O-ring seal which works in conjunction with standard push-on crimp-type pipe fittings and conventional crimping tools for subsequently sealing the connection. The O-ring is either circular or elliptical in cross section and the slots define equally spaced annular segments.

Abstract: An inclined plate-type compressor includes a cylinder head, a discharge chamber having an annular shape and disposed along an outer circumferential portion of the cylinder head, a suction chamber disposed at a central portion of the cylinder head, a valve plate including discharge ports, and a discharge valve including reed valve-type valve bodies disposed in the discharge chamber. Each valve body opens and closes a corresponding discharge port, and each valve body extends in a circumferential direction of the discharge chamber and is oriented along the annular shape of the discharge chamber. Because each valve body extends in the circumferential direction of the discharge chamber, the length of each valve body may be increased as compared with that in known compressors, wherein the valve body extends in the radial direction over the width of the annular discharge chamber. Consequently, stress, which is generated at a root portion of each valve body when the valve body is opened or closed, may be reduced.

Abstract: A fluid coupling assembly which has a novel female subassembly capable of receiving a male portion, the female subassembly being formed by spin welding two generally cylindrical plastic parts together, one of the parts being a quick connect end portion and the other part being the barb end portion. The female subassembly is provided with a key or keyway to prevent rotation, to mate with a corresponding key or keyway on the male portion to prevent false connections, and to act as a clear visual aid for orientation. In this design differing barb end portions can be secured to a common quick connect end portion.

Abstract: A sealing arrangement for a hydraulic plug-in connection for use in particular in the motor vehicle industry for hydraulic clutch and brake systems is fitted on a hydraulic plug-in connection and has a socket and a plug-in fitting which can be connected thereto. The plug-in fitting is attached to a hydraulic tube. The plug-in fitting has a sleeve and a sealing element fixed thereto, which seals off the plug-in connection both from the hydraulic tube and from the exterior of the socket. The sealing element and the end of the sleeve which receives the sealing element are designed so as to be able to install the sealing arrangement without it being possible for the sealing element to be separated axially from the sleeve when the plug-in connection is released.

Abstract: For use with a pipe fitting, an adapter including a hollow, substantially cylindrical sleeve formed of a polymeric material, preferably Nylon, the sleeve defining a bore on a first open end for engaging a pipe fitting and a tapered second open end for insertion into a pipe. A pipe fitting assembly is formed by the adapter together with a hollow fitting having a first open end defining an insert adapted and configured for insertion into the bore of the adapter; and a stop member; the adapter being adapted to abut against the stop member.

Abstract: An apparatus for restraining pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline featuring an improved restraining and sealing mechanism. The restraining and sealing mechanism includes a circumferential housing and a companion sealing ring which are received within a mating groove provided in the belled end of a female pipe. The circumferential housing has an interior region which contains a gripping ring insert. The sealing ring and housing are integrally located within a belled pipe end during belling operations.

Abstract: An O-ring used in a clamp-type joint for a vacuum apparatus, which engages with a concave groove in the outer circumference edge of the center ring and is sandwiched by an outer ring having a U-shaped outer circumference, wherein the radius of the circular arc in the cross-section on the side coming into contact with the outer ring is smaller than the radius of the circular arc in the cross-section on the axial side of the joint. A clamp-type joint for the vacuum apparatus which can exhibit stable sealing performance at a high temperature of 200° C. or more without cracking of the O-ring, as well as an outer ring and O-ring used with the clamp-type joint are also provided.

Abstract: A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe in a pipe sealing system. The sealing system includes a male, spigot pipe end which is joined to a mating female belled pipe end. The belled pipe end has an internal groove adjacent a mouth region thereof which is simultaneously formed under temperature and pressure as the mouth region is forced over a forming mandrel and about a sealing gasket located on the forming mandrel so that the sealing gasket is prelocated within the internal groove. The sealing gaskets of the invention have a specially designed sealing capability to seal volume ratio.

Abstract: An apparatus and method according to which the apparatus includes a pair of connected arcuate members for clamping around a pipe, with each arcuate member including at least one protrusion. The arcuate members have a first material hardness and at least a portion of the at least one protrusion has a second material hardness that is greater than the first material hardness so that the portion penetratingly engages the pipe when the arcuate members are clamped around the pipe.

Abstract: A seal/retainer unit (10) comprising an annular sealing gasket (12) and a plurality of retaining legs (14) extending generally perpendicularly therefrom. The sealing gasket (12) and the retaining legs (14) are formed in one piece (e.g., stamped) from a sealing material and dimensioned to allow nesting of a plurality of seal/retainer units (10) in a stacked arrangement. The retaining legs (14) may each include a rounded distal edge (16) to minimize package-tearing and interpart-marking and/or a break-off notch (18) to allow special customization. A radiused corner (20) between the gasket (12) and the legs (14) assures a gap between nested parts.