Abstract: A headset for a hydration system is disclosed. The headset includes a fluid conduit adapted to connect to a distal end of a hydration system supply tube, and a magnetic quick connect having an upstream and a downstream coupling member. The upstream and downstream coupling members have a common mating axis and together define a portion of the fluid conduit. The upstream member also includes an off-axis arm that may be rotated about the mating axis without decoupling the coupling members. A headgear mount for use in headsets for hydration systems, such as the disclosed headset, is also provided.

Abstract: A non-return valve device has at least part of a flow channel for a fluid and a movable cord-like sealing element arranged in the flow channel. The sealing element is configured such that it can be moved at least partially between a closed position and an open position, wherein, in the open position, a fluid flow is permitted through the flow channel, whereas in the closed position, the fluid flow through the flow channel is blocked by form-fitting engagement with the sealing element.

Abstract: A device for gas-tight connection includes: a first connection point with a terminal surface; a second connection point with a stationary, predetermined reference surface of a pipe flange connection, which is arranged relative to the terminal surface by an offset angle which is compensated for by an angular offset compensation; and a flanged disc unit. The first connection point includes a central ball-and-socket joint arrangement as an angular misalignment compensation. The central ball-and-socket joint arrangement has a tube section with a convex distal end region configured to interact in an articulated manner with a concave annular region, corresponding thereto, of the flanged disc unit. A side surface region of the flanged disc unit includes at least one adjusting screw for adapting to the offset angle so as to adjust a local distance to a counter-disc fixedly fastened coaxially to a pipe section adjacent to the convex distal end region.

Abstract: A magnetic quick connect for a fluid delivery system includes a male coupling member and a female coupling member. The male coupling member defines a first outer fluid communication path and includes a first magnetic material. A first inner member is disposed within the first outer fluid communication path and defines a first inner communication path. The female coupling member defines a second outer fluid communication path and includes a second magnetic material. A second inner member is disposed within the second outer fluid communication path and defines a second inner communication path. The male and female coupling members are detachably held together by an attractive force between the first and second magnetic materials such that the first and second outer communication paths are held in fluid communication, and the first and second inner communication paths are held in fluid communication.

Abstract: Methods and systems are provided for a fuel injector of an internal combustion engine. In one example, a fuel injector includes a body having a flange shaped to seat within a shoulder of a passage of a cylinder head. The shoulder is positioned at an inner side of the cylinder head such that the fuel injector is coupled to the cylinder head at the inner side by the flange.

Abstract: A non-metallic flange isolation gasket kit sealing flanged pipeline connections and flanged vessel connections while providing electrical isolation protection between flanges suited for high-pressure and high-temperature cathodic protection applications is presented. The invention protects flange faces from media induced corrosion and mitigates flange rotation induced fatigue and failures. The invention comprises of a retainer, a seal, and a seal pre-load structural ring. The seal pre-load structural ring is inserted into the seal, and seal outer diameter surface is joined to the retainer inner diameter surface. A second embodiment comprises of a composite gasket blank, comprising of a retainer and a seal, and a seal pre-load structural ring. The seal outer diameter surface and the retainer inner diameter surface are joined by thermal fusion bonding. The invention may further comprise one or more gasket seating stress stabilizers and/or a centering ring.

Abstract: A connector includes a body portion having an inner peripheral surface defining a cylindrical insertion hole for inserting therein a connection member and an O-ring. A recess portion is provided in the inner peripheral surface of the body portion, and is opened in the body portion in a radial direction of the body portion, at a position on an inlet side of the insertion hole than the arrangement position of the O-ring. Furthermore, the recess portion extends in an axial direction of the body portion and has an end portion on a side of an arrangement position of the O-ring, and the end portion of the recess portion becomes in an acute angle shape which is acute toward the arrangement position of the O-ring. Alternatively, an angle reducing portion may be provided in the recess portion on a side of the arrangement position of the O-ring.

Abstract: A valve assembly uses an O ring contained within a void such that the outer edges of the valve assembly reach the outer mid section of the O ring. A kettle for brewing beer or heating other fluid is drilled so as to accommodate the disclosed valve. The O ring is pressed and held against the outside surface of the kettle wall. A retaining nut placed within the kettle further secures the valve to the kettle. As the surface of the kettle heats during use, the contained O ring retains sufficient contact with the valve and kettle so as to prevent leakage.

Abstract: The front end portion of a fitting projection from the portion on which a backup ring is mounted to the front end, has a diameter smaller than the inner diameter of the backup ring. The backup ring is endless in the circumferential direction thereof. The backup ring functions as a sealing member.

Abstract: A high pressure hydraulic fitting (300) includes a body (302) having a central passage (322), a channel (304), a threaded section (314), and an extension section (310), wherein the threaded section (314) is disposed between the channel (304) and the extension section (314), and wherein the central passage (322) fluidly connects a first distal end (303) with a second distal end (316) of the body (302). A first o-ring (306) is in the channel (304). A locking nut (324) is engaged to the body (302). The locking nut (324) has an internal threaded section (326) that is arranged to mate with the threaded section (314) on the body (302).

Abstract: The threaded connection between the pin and the box ends of two pipes is sealed externally and internally to protect the threads in the connection from exposure to corrosive fluids. Seals are provided at each axial end of the threads. The external seals may be formed by metal-to-metal engagement between the pin and box or may be provided by an annular, elastomeric ring engaging the pin and box of the connection. A threaded compression ring may be used to compress the elastomeric seal between the pin and box. The seals protect dynamically loaded threaded connections from fatigue-induced failure in corrosive environments.

Abstract: An exhaust gas recycle (EGR) isolation flange that includes an annular body that defines a central aperture therethrough and a plurality of axially extending bosses that extend from the body is disclosed. Additionally, a method for coupling an exhaust gas recycle flange to an isolation flange is disclosed where the EGR flange is mated to the isolation flange by receiving an isolation flange boss within a boss receiving aperture of the EGR flange and by disposing a seal ring between the EGR flange body and the isolation flange body.

Abstract: A low pressure air duct seal assembly for an electrophotographic reproduction machine is disclosed, which has a pair of air duct pieces. One of the air duct pieces has an end portion, an outer surface, and a circumferential groove formed on the outer surface and disposed adjacent the end portion. An O-ring is disposed in the groove, and heat shrink tubing is disposed over a portion of the outer surface of the air duct piece and covering the O-ring. The other air duct piece has an end portion and a coupling disposed adjacent the end portion for receiving the end portion of the first air duct piece.

Abstract: A fitting assembly for fluid and vapor connection comprising a first tube, a second tube and a thin strip of polymeric material. A male member is formed at the end of the first tube. A hollow female body is formed at end of the second tube. The male member is received in the female body. The strip of polymeric material has a layer of adhesive applied to one surface of the strip. The strip is bonded to the male member and unbonded to the female body. The strip is compressed between the male member and the female body.

Abstract: A fitting or a mounting part including an end section extending in a longitudinal direction, which end section can be pressed together with a tube for establishing a connection. The fitting or mounting part has a ring-shaped elevation on the end section forming a space, a sealing ring in the elevation and at least one flow channel in the elevation. The flow channel extends diagonally to a plane in a longitudinal direction of the end section and changes a depth of the space.

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

Abstract: Provided is a coupling for fluid pipes, comprising a plug and a socket. The socket includes a socket body, a sleeve slidably fitted on the outer peripheral surface of the socket body and urged toward the distal end thereof, and a plurality of locking members provided on the socket body and capable of being engaged with and disengaged from an outer peripheral groove by means of the sleeve. The pipe coupling further comprises a pair of end faces provided individually on the plug and the socket and adapted to abut against each other when the plug and the socket are joined, and a shaped packing provided on one of the coupling end faces and adapted to prevent admission of external air when the coupling end faces abut against each other and to prevent the fluid from leaking out when the coupling end faces are separated from each other.

Abstract: A hose device for fuel transportation having superior methanol permeation resistance, methanol resistance, non-extractability with methanol, water resistance, heat resistance, pressure resistance, etc., when methanol is used as a fuel. The hose device for fuel transportation comprises a hose main body having a three-layer structure composed of an innermost layer made of a resin having methanol permeation resistance, an intermediate layer, and an outermost layer, and a quick connector mounted on the end portion of the hose main body. The aforementioned quick connector is composed of a housing section and a pair of O-rings. The aforementioned housing section is composed of a material having methanol permeation resistance, one end portion of the housing section is formed as an insert portion to be inserted into the aforementioned hose main body, and the other end portion is formed as a container portion for containing an engagement target member therein.

Abstract: A fitting for connecting two components is described. The fitting may be explosion proof for use in hazardous environments. The fitting may swivel allowing fast and easy connection to fixed components, thus minimizing the time required for installation and periodic maintenance, while maintaining the integrity of the explosion proof fitting. In this way, components—such as electrical conduits containing conductors or wires—can be installed and maintained without the use of damming material. Also described is a method of installing an explosion proof fitting for use in hazardous environments.

Abstract: A leakage restriction device for a refrigeration cycle of a vehicle air conditioner in which refrigerant flows has first and second rubber gaskets. The first and second gaskets are disposed between a pipe and a pipe joint of the refrigeration cycle for restricting refrigerant from leaking into atmospheric air. The first gasket is disposed on an atmospheric-air side and the second gasket is disposed on a refrigerant side between the pipe and the pipe joint. The first gasket has a gas permeability lower than that of the second gasket, and has a blistering-resistance which is inferior to that of the second gasket. As a result, refrigerant is restricted from leaking into atmospheric air, and a blister is restricted from being formed in the first and second gaskets even when a pressure of refrigerant is rapidly changed.

Abstract: A fluid assembly is disclosed. The fluid assembly includes a first conduit having a generally annular first body and a first longitudinal channel extending therethrough and a second conduit having a generally annular second body disposed over a portion of the first conduit and having a second longitudinal channel in communication with the first longitudinal channel. The second conduit further includes a retainer fixture. The assembly also includes a seal assembly including an annular seal having first and second seal members, an o-ring disposed within the seal generally against the first and second members, and a retainer biasing the o-ring toward the first and second seal members. The seal assembly is disposed between the first fuel conduit and the second fuel conduit such that the first seal member engages the first conduit and the second seal member engages the second conduit. The retainer engages the retainer fixture, and the seal assembly releasably connects the first conduit and the second conduit.

Abstract: A fitting assembly for fluid and vapor connection comprising a first tube, a second tube and a ring. The first tube has a male member at the end of the first tube and a radially enlarged upset formed at a distance from the end of the first tube. The second tube has a hollow female body formed at the end of the second tube. The male member is received in the female body. The ring surrounds the female body. The ring has an axial bore with an innermost diameter smaller than the outermost diameter of the female body for deforming the female body radially inward. The innermost diameter of the axial bore is smaller than at least a portion of the upset of the first tube.

Abstract: An improved dual seal pipe coupling is provided of the type having matingly interfitting male and female pipe fittings formed on adjacent ends of a pair of conduit members, wherein at least one of a pair of seal rings is vented at low pressure to prevent pressure build-up and potential seal ring distortion or damage upon initial assembly of the pipe fittings. The seal rings are seated respectively within a pair of axially spaced-apart recessed grooves formed on one of the pipe fittings for slidably and sealingly engaging the other one of the pipe fittings upon assembly therewith. A bypass vent is formed in at least one of the seal ring grooves, to include a shallow recessed channel underlying the associated seal ring and leading axially to a smoothly curved and generally arch-shaped relief port formed in an outboard side wall of the seal ring groove.

Abstract: A composite gasket (1) arranged to be frictionally fitted around a rigid tube end (2) is designed for insertion into a part (3) provided with an aperture (4) in the form of a cylindrical bore for coupling with the tube end. The gasket includes at least one ring (5) made of an elastomeric material and at least one collar (6) made of a rigid material in the shape of a cylindrical sleeve parallel to and coaxial with the ring axis. The collar is adjacent to the ring and has an outer surface (9) suitable for mild frictional engagement with the inner surface (10) of the coupling aperture, while the shape of the ring-engaging end surface of the collar matches that of the ring.

Abstract: A press fitting for producing a nondetachable tight connection of smooth-ended pipes which has at least one portion receiving a toroidal sealing element and an adjoining cylindrical area extending in the longitudinal direction, and is provided with a shoulder acting as a stop for the pipe which can be pushed in or pushed on. The sealing element has, in the circumferential direction, at least one portion which is provided with a cross section diverging from the starting cross section in that a bulge extends along the circumference and along the cross-sectional plane and a recess facing the pushed in pipe extends radially in the cross section of the sealing element, the volume of the bulge compared with the starting cross section is at least equal to the volume of the recess lacking at the starting cross section and, before pressing, the recess of the sealing element forms a through-opening in the axial direction viewed in cross section.

Abstract: A fluid distribution apparatus in which a conduit extends in a bore of a fitting having a shoulder formed in the bore, The conduit has an external bead for engaging the shoulder to locate the conduit relative to the fitting and a fastener is provided for fastening the conduit to the fitting.

Abstract: A pipe fitting (1) for connecting a metallic pipe line (10), including a pipe union (4), which contains a receiving opening (8) for the pipe line (10), a swivel nut (6), which can be threadedly connected with the pipe union (4), as well as metallic cutting ring (18), which is disposed between the pipe union (4) and the swivel nut (6). The cutting ring (18) with an outer cone (30) acts jointly with an inner cone (28) of the pipe union (4) in such a manner, that, when the swivel nut (6) is tightened, it cuts into the material of the pipe line (10) with at least one cutting edge (32) and generates a form-fitting junction. The cutting ring (18) includes--where it joins an outer cone (30)--an essentially radial contact surface (38) for the purpose of limiting the tightening force, when it comes into contact with a face surface (40) of the pipe union (4).

Abstract: A high pressure plug/port assembly includes a plug having a head portion at one end, a guide portion at the other end and an O-ring portion therebetween. An annular plug seat surface extends radially inward from the head portion to the O-ring portion at the intersection thereof and a chamfered surface extends radially outward from the O-ring portion to the guide portion at the intersection thereof. The port includes a threaded counterbore in threaded engagement with the plug head portion, a smaller bore receiving the plug's guide portion and a frusto conical bore extending from the smaller bore to the counterbore and defining an annular port seat surface extending radially outward from the frusto conical bore to the counterbore.

Abstract: The present invention relates to a pressure medium plug-in connector, consisting of two connector parts, i.e. a housing part (2) and a plug part (4), wherein the plug part (4) with a plug shaft (6), via at least one peripheral seal (10) located in an annular groove (14) of the one connector part (4) and interacting with a peripheral sealing surface (18) of the other connector part (2), can be inserted in a sealed manner into a receiving opening (8) of the housing part (2) and can be secured against release by means of a locking arrangement (12). The locking arrangement (12) is constructed in such a way that a partially plugged, prelocked position and a completely plugged, fully locked position are ensured. In the prelocked position, a seal is present which is so incomplete that, if pressure is applied with a pressure medium, a clearly limited perceptible leak, particularly in the form of an audible leaking sound, occurs.

Abstract: A plug connection for a pressure system comprising a receptacle part and a plug part, the plug part is inserted into the receptacle part and retained therein by a locking device which forms a prelocked, unsealed connection and a locked, sealed connection between the plug part and the receptacle part with a limit stop element which indicates when the locked, sealed connection has been obtained.

Abstract: An aseptic or sanitary pipe or tube fitting including a first ferrule having an outer radial surface, a counterbore and an inner annular surface, and a second ferrule having an inner radial surface, an outer radial surface and an outer annular surface matingly engaging the inner annular surface and inner radial surface of the first ferrule, a recess in the outer radial surface and an O-ring forced into the recess by the inner radial surface of the first ferrule.

Abstract: A threadless interconnection system for sections of pipe as provided by a male/female interconnection in which the male member and female members have mating tapered surfaces providing both the camming action for inset snap rings that engage concurrently upon assembly of the interconnection. The tapered section includes angles which assure that snap rings are precentered within tolerances before being gradually opened during the assembly process, while also providing a metal-to-metal seal after assembly. Sealing is facilitated by composite seals that include O-rings arranged with compatible actuator and backup rings so as to avoid destruction of the O-ring geometry because of bending, flexure and torsional forces.

Abstract: The present invention relates mainly to a sealing ring and to a method of mounting it in a groove. According to the present invention, the sealing ring is twisted before being mounted in the groove so that the reaction forces retain it therein. The retention capabilities of the present invention is improved for sealing rings of a section that includes a projection directed towards a wall of the groove that provides radial support. The present invention applies more particularly to the mechanical, motor vehicle, and aircraft industries. The sealing ring of the present invention can be used, in particular, in association with the manifolds of turbocompressors, and with air inlet and outlet manifolds, in particular those made of plastics materials, as used in the motor vehicle industry.

Abstract: In a pitless well adapter, an adapter insert from which a flow pipe and pump depends, is normally vertically, slidably and removably held by wedge ribs in an adapter housing. The top surfaces of the adapter insert and adapter housing are similarly formed such that sliding the adapter insert out of engagement with the adapter housing will enable the adapter insert to be deflected into the casing in a manner which will spare damage to the adapter insert. The bottom surface of the adapter insert and the adapter housing are of matching contours so as to permit proper seating of the adapter insert in the adapter housing. The uppermost portion of the wedge ribs are tapered to form a guide surface engageable with the adapter insert upon installation of the adapter insert in the adapter housing.

Abstract: A fitting assembly for a releasable connection with a distal tubing end. The fitting includes a generally annular body formed as having an internal bore with a radial surface describing an internal gland having a forward end wall defining a contact edge with the radial surface of the bore. A collet is journalled coaxially within the bore for translational movement within the gland of the body as having a generally cylindrical wall portion expandable to receive the tubing end therethrough. The wall portion is divided longitudinally into at least a pair of arcuate, cantilevered segment extending resiliently between respective distal and proximal ends. Each of the segments has an inner projection disposed adjacent the distal end thereof, and an outer camming portion which extends from a first rearwardly-inclined ramp surface to a generally-contiguous second rearwardly-inclined ramp surface.

Abstract: A sealing arrangement for a rotating coolant union for preventing leakage forward between the outer surface of a seal carrier of a floating seal assembly of the coolant union and the inner wall of the housing, includes an O-ring seal and an annular back-up ring. The O-ring is mounted on the seal carrier and extends into an annular groove defined in the inner surface of the housing, with the width of the groove being greater than the outer diameter of the O-ring seal to permit the O-ring seal to be moved within groove in response to axial sliding movement of the seal carrier. The back-up ring encircles the support member and includes a radially projecting portion that extends into the groove and defines a slanting surface for a corner of the groove, the slanting surface being engaged by the O-ring seal during relative axial movement between the seal carrier and housing for limiting movement of the seal within the groove.

Abstract: Nozzle repair shields and methods for installing them are provided by this invention. The nozzle repair shield includes a cylindrical body portion having an annular flange disposed from the top end and at least one sealing lip disposed at its lower end. The body portion further includes an annular support band located in its lower end for supporting the sealing lip during insertion and use. The preferred shield is constructed from machined PTFE stock, and further includes resilient spacing members between the sealing lips to further reduce damage to the sealing lips and subsequent loss of a fluid-tight seal.

Abstract: An ultra high vacuum (UHV) joint is scaled by an elastomer O-ring (7) between adjacent flanges (3,4), fitting in a seal cavity formed by grooves (41,42) in the flange (3,4) surfaces. The groove surfaces (41,42) are highly polished and shaped such that the O-ring (7) conforms to the groove surfaces (41,42) and contacts them substantially entirely when the flanges (3,4) are clamped together. This improved structure significantly reduces the permeation through and the gas leakage around the seal (7). The resulting seal (7) can support a vacuum of 10.sup.-11 torr or better. The conformal-groove geometry of the present invention can be used with seals other than elastomer seals, such as soft metal seals (55,65).

Abstract: A sealed connection system for connecting a pipe carrying a hot fluid to a plastic member. The plastic member has a wall having an orifice extending therethrough. The sealed connection includes an internal projection formed in the wall and projecting into the orifice, and an annular seal lining the internal projection. The connection further includes a lip positioned on an exterior surface of the wall and at least partially surrounding the orifice. Also provided is a heat shield bell fastened to the pipe and having a flared portion. The flared portion has an external flange bearing on the annular seal. The bell is insertable into the orifice. Further, the connection includes a pin insertable into the lip for fixing the external flange against the annular seal.

Abstract: An inventive tubing connector includes a tube (22) having an upset portion (24) receiving within a housing (26). a retainer (30) is positioned between an outer end of the housing and the upset portion to prevent tube removal. A seal (48) within the housing provides a fluid tight seal between the housing and the tube. The seal is preferably formed of toughened fluorosilicone, such that it provides a secure fluid tight seal over a temperature range down to about -50.degree. below zero.

Abstract: A pipe coupling, comprising a sleeve having at least one end adapted for the insertion of a pipe and being provided with a substantially conically shaped supporting surface for a sealing ring. A compression ring is provided by which the sealing ring may be compressed around the pipe. The sealing ring is composed of a circumferentially compressible, but in cross section rather undeformable annular core, which is more particularly bent of a helical body having substantially circular windings, and a sheath of elastomeric material which forms the actual seal. The sheath completely encloses the annular core both cross sectionally and circumferentially. The supporting surface has a progressively decreasing diameter in the pressing direction.

Abstract: An improved apparatus for introducing steam into an airstream in heating, ventilating and air conditioning system includes a supply header, steam dispersing structure and structure for collecting condensation from the steam dispersing structure. The supply header is adapted for connection to a source of steam and is preferably elevated with respect to the return header, so that condensation in the supply header and steam dispersing structure is forced into the return header under the influence of steam pressure and gravity. One embodiment of the invention presents a unique modular design whereby the steam dispersing structure can be quickly connected and disconnected from the headers. This allows the apparatus to be broken down and assembled on site, which simplifies and reduces the expense of installation.

Abstract: An O-ring seal configuration between a motor unit and a reduction gear head of a geared-motor is improved. An, O-ring holder is defined by a flange face of a bracket, which is fit to a frame of the motor unit and a guide groove, which is formed on an outer face 7d of a circular boss. A circular vertical wall of the frame has a specific excess height over the flange face; whereby when the reduction gear head is coupled to the motor unit, the guide groove and the circular vertical wall cooperatively prevents the O-ring from become dislodged and misaligned in the coupling face and from slipping off of the bracket.

Abstract: The present invention is a hydraulic coupling and method of making the same. The coupling includes a male fitting, a female port, and a lock nut. The male fitting has external threads which receive the female port and the lock nut. The female port has an internal tapered recess for mating with an external tapered surface of the skirt of the lock nut. The skirt portion has inner and outer sections which initially form a double angle on the exterior surface. The outer section is bent inwardly to form a tapered external surface forming a steeper internal angle with the male fitting. An O-ring is positioned about the male fitting for sealing the hydraulic coupling within the tapered recess. The fitting of the present invention is also adaptable to the O.R.S. fitting and the S.A.E. flange fitting. A tapered surface of the female port engages an O-ring positioned in an annular groove of the male fitting.

Abstract: A fastener assembly comprises a metal screw and a sealing ring made from an elastomeric material and is useful, in an exemplary application, as a drain plug for an oil pan for an internal combustion engine. The screw head has an undercut, annular recess, within which the sealing ring is seated. The sealing ring has a sealing portion, which when unstressed has an axial thickness smaller than the recess depth, and an adjoining portion or web extending radially inwardly. When unstressed, the adjoining portion has an inner diameter smaller than the major diameter of the threaded portion of the screw shank. The sealing ring when unstressed has an outer diameter larger than the outer diameter of the recess. Moreover, the recess volume is sufficient for the recess to contain the sealing ring over a wide range of cumulative, dimensional tolerances.

Abstract: A means is disclosed by which the operational temperature of a sealed relatively rotating device may be achieved at lower than recommended operational temperatures for the elastomer compound used as the sealing material.

Abstract: An angle valve has a side port bore with a cylindrical inner seal surface chamfered at its outer end and a removable port fitting receivable in the port bore and having a cylindrical outer seal surface in which are formed two axially spaced-apart circumferential grooves, each generally rectangular in transverse cross section. Two seal rings of circular cross section are respectively received in the grooves so as to project radially outwardly therefrom beyond the other seal surface of the fitting. Each ring has a transverse cross-sectional area substantially equal to that of its associated groove so that when the fitting is disposed in the bore the rings are deformed to substantially fill the grooves.

Abstract: A union joint capable of perfectly hermetically connecting pipes so that a gas passing the pipes never leaks from the junction of the pipes even if the pressure of the gas is as high as 150 kg/cm.sup.2. The union joint comprises a first sleeve hermetically joined to a pipe, a second sleeve hermetically joined to another pipe to be connected to the pipe joined to the first sleeve, one or a plurality of metallic gaskets placed between the respective sealing surfaces of the first and second sleeves so as to be compressed between the sealing surfaces of the first and second sleeves when the first and second sleeves are drawn axially toward each other, a coupling nut for drawing the first and second sleeves axially toward each other, and a thrust bearing interposed between the first sleeve and the coupling nut to allow the coupling nut to be rotated relative to the first sleeve.

Abstract: An improved hose fitting assembly is disclosed which is designed for use in automotive air conditioning systems and is particularly well suited for use in such systems employing recently developed composite type hose which incorporates an inner liner of a thermoplastic material such as nylon or the like. The assembly comprises a resilient sealing member provided on the outer periphery of the fitting which is designed to sealingly engage the hose member and fitting to provide a positive seal therebetween so as to prevent loss of pressurized fluid such as refrigerant gas.

Abstract: In a system for providing a direct sealing connection between flat coupling hardware and VCR-type coupling hardware, a gasket is provided having a conical inwardly facing side surface to engage the toroidal projection on the endface of the VCR-type coupling hardware. The opposite side surface of the gasket is provided with an internal shoulder to receive a metal O-ring to be sandwiched between the gasket and the flat end surface of the flat coupling hardware.