Abstract: The disclosed fitting connects a tubing end to a fluid conducting member which have a fluid port and end walls surrounding the port and a threaded portion surrounding the end wall. The fitting comprises a ferrule of resilient deformable material having a forward portion with a wide flat sealing surface which is adapted to mate with and sealingly engage the end wall surrounding the port. The ferrule has a throughbore with a diameter through its rearward portion being sufficient to receive the tubing end and the diameter through the forward portion being smaller than the tubing exterior thereby forming a tubing abutting shoulder within the ferrule. The ferrule is forced into sealing abuttment with the end wall of the fluid conducting member and into sealing engagement around the tubing by means of a fastener having a throughbore for receiving the tubing which is flared at its forward end to present conical walls for axially engaging the rearward end of the ferrule.

Abstract: A pipe coupling having an annular gasket deformed and compressed within a closed gasket chamber to form a seal for a pressurized hydraulic line, for example, one wall of the gasket chamber being formed by the outer surface of a pipe end portion which is to be connected either to a second pipe end portion or to a wall port. The axial width of the gasket chamber is determined by an abutment of the end face of the pipe end portion which transmits the abutment force to a threaded clamping sleeve or, as the case may be, to a coupling nut with the aid of a snap ring which engages a peripheral groove of the pipe end portion and a thrust shoulder of the threaded clamping sleeve. The pipe-to-pipe version of the coupling has two annular gaskets inside identical gasket chambers on opposite axial sides of a centering sleeve which surrounds both pipe end portions.

Abstract: In a fluid-tight coupling comprising a male fitting (1) having an axial channel (2) issuing to the outside via a radial opening (3) and forming the first section of the fluid line, said coupling requiring the male fitting to penetrate into a bore (6) in a mating part (5) containing the second section of said fluid line (4) issuing into the bore in line with the radial opening (3) when coupling is made and the male fitting (1) carrying two seals, located respectively above and below the radial opening, an improvement protects the seals against damage on insertion, wherein the upper seal (8) is secured between a conical shoulder (10) on the male fitting and a sliding ring (11) around the fitting, having a radial through-hole (17), the lower seal (9) is secured between same said ring and the conical top surface (12) of a sliding bushing (13) fitted over the end of the male fitting and the bore of the mating part has a shoulder (19) such that at the time of coupling the bushing (13) bumps said shoulder (19) and s

Abstract: A device for connecting pipes with fittings or fixtures for mixing fluids for use in cleaning, washing and rinsing basins, sinks or the like wherein the fitting has a casing supported over an opening of the washing basin or the like by clamping means capable of being tightened against the underside of a washing table top or the like and water-conducting pipes extending through said opening, the pipes being constructed as connecting conduits capable of being plugged into the pipes and having a collar extending around the conduits at least near their ends to be plugged, and being secured in position by a molded part which can be supported on the casing of the fitting and a clamping device acting on said molded part, so as to be able to dispense with additional sealing elements within the zone of connection of the pipes, the pipes being composed of plastic material with thickened collars molded therearound and having toward the free end of the pipe a sealing surface capable of being clamped against a sealing sea

Abstract: The pipe (2) is inserted in the through-hole of the flange (1) and the pipe-flange seal is assured by a fixing ring nut (6) screwed into the upper portion (5) of the hole.The hole, in the part opposite the threaded area (5), has an area (4) with a diameter equal to that of the pipe (2) and a truncated-cone coupling area (4) between the two areas (5) and (7). A ring (8) of elastomeric material is inserted inside the truncated-cone portion (7) and an annular projection (9) on the pipe (2) acts thereon, pushed by the screwing action of the ring nut (6).

Abstract: A hose connection, particularly for use in motor vehicles, is proposed which ensures a gastight connection already with a low starting torque, is usable repeatedly and whose structural component parts are non-detachably held together in an assembly unit. Supported on the shoulder (7) of a stepped hose sleeve (1), which shoulder (7) is smaller in diameter, is a hollow screw (2) which, when the hose connection is assembled at a rigid duct body (15), presses together a sealing ring (3), which is arranged on the shoulder (8) and has a larger diameter, only until the sealing ring (3) abuts at the end face (22) between the shoulders (7) and (8) of the hose sleeve (1).

Abstract: A coupling between first and second tubular members comprising a flexible retaining ring fitted over the first tubular member below an annular enlargement thereof and entering into screw-threaded engagement with internal screw-threading on the second tubular member or a connector element attached thereto. The retaining ring is a split-ring member whose longitudinally extending slit enables it to be passed lengthwise over the first tubular member and is so dimensioned that on re-assuming its original form, the opposed margins of the slit abut and the retaining ring is held against the first tubular member against removal therefrom by the enlargement, and the second tubular member or connecting member is coupled to the first tubular member. A sealing member is positioned at the coupling to form a fluid-tight seal at the junction of the tubular members.

Abstract: A ring seal and beaded tube type tube coupling has the annular bead defined by a rigid ferrule sealingly fixed to the tube with the ferrule including an annular flange forming the bead and having a shank portion extending axially outboard of the flange to thereby shorten, in effect, the unsupported length of the tube.

Abstract: The device comprises a clamping jaw and a two-piece union nut. The clamping jaw is U-shaped in longitudinal section and straddles the end of the pipe so that it surrounds this pipe end from inside and from outside simultaneously. The two-piece union nut is composed of a first part and a second part which is inserted between the first part and the outer leg of the clamping jaw. The second part is provided with a left-hand external thread which meshes with a left-hand internal thread of the first part. Every location to be made tight within the device is sealed twice when the union nut is tightened, so that the connection is completely fluid-tight.

Abstract: A small-diameter tubing connector and sealing apparatus for anchoring a tubing end in fluidtight engagement in high pressure service (up to 60,000 psi), said apparatus having four separate sealing areas.

Abstract: A pipe connection assembly for connecting pipes transmitting a fluid as provided. A feature of this invention is the fact that it prevents any fluid escaping from the connection from traveling along the pipes and damaging any machinery that may be located along the pipes. The pipe connection assembly is comprised of first (or upper) and second (or lower) packing assemblies that radially surround the pipes. In certain embodiments, each of the packing assemblies is comprised of a top packing ring, a packing and a packing base ring, each packing being encased by the two complementary packing rings and the pipes when the packing assemblies are properly assembled. An opening is formed between the second top packing ring and the first packing base ring. The pipe assemblies are located with respect to the pipe interface such that any escaping fluid will contact the first packing assembly and the opening before contacting the second packing assembly.

Abstract: A connecting arrangement for connecting two hollow components of a hydraulic circuit to one another, especially a pipe or hose to a mating component, includes a guiding formation on one of the components, especially the mating component, and a mounting formation connected to the other component, these formations having correlated cross-sectional shapes such that the guiding formation guides the mounting formation in a predetermined direction, especially the longitudinal direction of the one component, and prevents relative displacement in all other directions. The mounting formation is advantageously constituted by a separate mounting element which is affixed to the other component by a threaded connection, such as by a screw cap. The formations advantageously have complementary dovetail-shaped cross-sectional configurations.

Abstract: A valve includes a molded plastic body portion having an internal chamber forming a valve seat having inlet and outlet openings. A plastic plug member is rotatably positioned in the valve seat and has a flow passage which in the open position of the valve communicates with the inlet and outlet openings. Pipe fittings of the valve body communicate with the valve seat and are aligned with the inlet and outlet openings. Each fitting is coupled to a conduit of a piping system by a nut threaded into the respective fitting to urge a wedge-shaped collar into frictional engagement with the conduit. The nut surrounds the collar which is advanced by the nut into the fitting until a radial shoulder on the nut abuts the end of the fitting so that the end of the nut in the fitting applies a controlled compressive force upon a gasket seal to effect a fluid tight connection of the conduit to the fitting.

Abstract: A sealing assembly is releasably disposed on a hanger suspending a string of casing or tubing into a well. A shoulder on the hanger engages a seat in the bore of the wellhead and has passages therethrough for connecting the annular spaces above and below the seat. The seal assembly is lowered into the upper annular space around the hanger to close the annulus. The assembly includes a first tubular body threadingly connectable to the hanger, an outer load ring, an inner load ring, an inner packing ring disposed between the outer load ring and inner load ring, an inner retainer ring, and an outer packing ring disposed between the inner load ring and retainer ring. The inner packing ring singly engages the hanger and the outer packing ring singly engages the head. Such sealing occurs in series. The entire sealing force is applied through the outer diameter and inner diameter seal elements with the lower seal being loaded first.

Abstract: An earth boring bit has a nozzle assembly with a wedging retaining ring and a crushed O-ring seal. The nozzle is located in a passage in the drill bit and bears against a shoulder. The retaining ring is secured by threads into the passage to tighten the nozzle against the shoulder. The retaining ring has a bore with an upper rim that encircles a conical section in the bore. The retaining ring conical section mates with a conical section formed on the exterior of the nozzle. The two conical sections wedge the nozzle in place when the retaining ring is tightened. An O-ring is located between the nozzle conical section, the wall of the passage and the upper rim of the retaining ring.

Abstract: A portable, reusable pipe coupling for connecting joints of cylindrical conduit which incorporates an annular body structure having sealed recesses formed at each extremity thereof. The end portions of the body structure define annular enlargements that are internally threaded and receive the externally threaded annular rim portion of a seal retainer element at each extremity of the coupling. The seal retainer element cooperates with a seal support member within the coupling body to define an annular seal chamber and an annular seal locking groove. An annular sealing element formed of resilient material is disposed within the seal chamber and is deformed by movement of the seal retainer relative to the coupling body, thus forcing the inner peripheral portion of the sealing element into sealed engagement with the ends of conduit sections that are located within the coupling body. The sealing element also incorporates an annular locking flange that is secured within the locking groove.

Abstract: This invention provides a stuffing tube for the decks and bulkheads of ships, which includes a tubular body having portions of two diameters interconnected by a tapered shoulder. An adapter having a tapered portion complementary to that of the tubular body fits inside, the adapter having a short cylindrical section dimensioned to fit over the cable. A seal comprising a strip of resilient material with an annealed wire core is wrapped around the cable and one end of it is engaged within the tapered adapter. The opposite end is engaged by a flat washer which has an inside diameter comparable to that of the cylindrical section of the adapter. A gland nut compresses the seal, pressing inwardly on the flat washer. Different cable sizes are accommodated within a single tubular body by varying the dimensions of the adapter, seal and flat washer.

Abstract: A subsea well apparatus having an improved means of axially connecting the plurality of tubing string sections disposed about each riser conduit section.The subsea well apparatus has a riser conduit section with a mating flange at each end, tubing string receiving orifices disposed about the mating flanges, and a tubing string section with its ends disposed within an orifice in each mating flange. Further, the end portions of the tubing string section are shaped for free axial movement within each orifice and there is provided a means for axially adjusting the position of each tubing string end portion in order to selectively adjust the position of each tubing string end surface relative to the end surface of the adjacent mating flange.The end portions of the tubing string sections may be provided with an outwardly-extending radial flange, and the axial adjusting means may be an annular ring circumventing the tubing string section and movably-attached to the riser mating flange by threaded engagement.

Abstract: A two-piece pipe fitting is disclosed for establishing a sealed connection between a pipe or fluid conduit and a connector body in the form of an electrostatic spray gun. The fitting comprises a flanged tube element and a threaded sleeve nut surrounding the tube element. The sleeve nut, when threaded into a threaded section of a bore in the connector body, forces the flange of the tube element into the bore so as to establish a sealed connection between the bore and the flanged end of the tube element.

Abstract: A quick connect fitting for air brake tubing consists of a body member with a tubing support therein and a nut threadedly connected to the body. A split ring gripping sleeve having a conical outer surface cooperates with the conical inner surface of the nut to receive and retain inserted tubing. A ring seal is disposed in the body member to provide a primary seal between the body and nut and includes a surface in engagement with the gripping sleeve to maintain alignment of same with the conical surface, limit the inward movement of the sleeve and bias the sleeve toward the conical surface to enhance the grip. In various embodiments of the invention the ring seal provides a primary seal on the O.D. of the tubing or it abuts the end of the inserted tubing, in both instances providing an increased force to return the split ring tight to the conical surface of the nut. An o-ring in the nut provides a seal on the O.D.

Abstract: An adjustable pipe union for tubing strings including an outer lower mandrel, an inner upper mandrel threaded along a lower end portion into the outer mandrel, packing between the mandrels, an annular seal chamber between the mandrels, a metal-to-metal seal assembly between the mandrels, and a jam nut threaded into an end portion of the outer mandrel around the inner mandrel against the metal-to-metal seal expanding the seal to lock the members together and seal between the members. A short embodiment of the union permits rotational orientation of tubing string apparatus such as valves. A longer embodiment of the union performs a spacing-out function for fitting a tubing string assembly between longitudinally spaced fixed members such as two packers.

Abstract: A device for use with a unit fastener including a first coupling part which is lockable to a complementary second coupling part by a locking wire or locking ring actuated by a locking nut or similar. The first coupling part is arranged in a cavity on the unit and the locking nut or the like is designed with a thread or similar via which the nut or the like can be fastened to the unit. The locking nut or the like positions the locking wire or the locking ring while simultaneously holding the first coupling part fastened in the cavity.

Abstract: A heat exchanger comprising an elongated tubular cylindrical member having fluid ingress and egress openings adjacent to its opposite ends and external flanges at opposite ends one of which flanges has a counterbore facing in the direction away from the cylindrical member. A plurality of graphite tubes within the cylindrical member having their opposite ends connected to graphite headers one of which is connected through a graphite end member to one end of the cylindrical member and the other of which has an outside diameter slightly less than the inside diameter of the cylindrical member and within which it is slidable or floats. The floating header has an external circumferential groove with outwardly inclined ends. A seal is provided at the end of the cylindrical member at which the floating header is located which seal includes packing in the counterbore in the adjacent flange and a gland member slidable on the floating header and adjustable towards the flange.

Abstract: A quick connect coupling is disclosed which includes a body assembly providing a tube end receiving passage having an inner cylindrical seal portion and an internal, annular groove outwardly of the seal portion. A tube end portion is proportioned to fit into the tube receiving passage with a close fit and has a peripheral seal groove located within the seal portion and a peripheral lock ring groove within the internal groove when the end portion is inserted into the passage. A resilient seal is carried in the seal groove and a compressible lock ring having a circular cross section is located in the lock ring groove.

Abstract: A quick connect tube coupling sealingly couples a tube to a body solely by pushing the tube axially into the body. The tube is provided with a reduced diameter end portion and a conical ramp portion and an annular groove. The body has a passage extending therethrough which includes a nominal diameter portion, a counterbore portion, and a threaded end portion. A coupling subassembly is screwed into the threaded end of the passage in the body before the tube is assembled. The coupling subassembly includes a nut having a tube receiving passage and a retainer which holds a snap ring and an elastomeric seal in place prior to and after assembly of the tube.

Abstract: A spigot and socket connection of the type which comprises a pipe end held within a socket by means of a retaining ring includes a device for securing the connection against sliding of the components. This device comprises a sleeve-like securing element lying between the pipe end and the retaining ring. The securing element carries an abutment which is engaged by the retaining ring, and the element is securely clamped to the external surface of the pipe end.

Abstract: A wall feedthrough fitting comprises a feedthrough tube that is embedded in a wall and has a pair of opposite ends each exposed to the respective face of the wall. An annular seal surrounds this tube adjacent one of the ends and radially inwardly bears on the tube and radially outwardly bears on a holding ring embedded in the wall and spacedly surrounding the tube. This holding ring extends axially toward one end of the tube beyond the seal and has between the seal and this one end an internal screwthread. A pressure ring is threaded into this holding ring and may bear directly via an axial face or indirectly via an intermediate ring on the seal. The tube may be provided at its one end with an external thread that engages a complementary thread inside the pressure ring.

Abstract: A fluid fitting for attaching fluid conduits to a housing which makes possible a simplified assembly procedure that requires only the insertion of a tube assembly into a preassembled nut located in a threaded opening in the housing. The assembly includes an expandable clip located on the tube between retainer beads formed on the tube. The clip contains locking fingers that engage a shoulder on the nut.

Abstract: A quick connect coupling is disclosed providing an integrally formed tube end assembly in which the wall of the tube is deformed to increase the diameter and is subsequently roll formed to produce a pair of axially spaced peripheral grooves to receive a snap lock ring and a seal. The inside diameter of the tube end within the grooves is substantially as large as the inside diameter of the remainder of the tube so that a substantial flow restriction does not result from the presence of the peripheral grooves. The material of the tube end is work hardened so that sufficient structural strength is provided even in the zone of the grooves. A smoothly curved rib is also formed in the tube wall to cooperate with a lock ring to permanently connect a tubular nut to the tube end after the device is initially connected as a quick connect coupling.

Abstract: A pipe connector has a pin initially stabbed into a box, the pin and box then being axially loaded together at confronting transverse surfaces while the pin and box are pressurized to expand the box and compress the pin, so that when the pressure is relieved a pressure energized shrink fit is provided and the connector is rendered rigid to enhance tensile, compressive and bending strength and provide a fluid tight joint useful in making up lengths of pipe such as piles and pipelines. Locking screws hold the connector against axial separation to maintain the pin under axial compression and maintain the box under axial tension. The lock screws are threaded into the upper end of the box to fasten the pin to the box or a sleeve or gland nut can be threaded on one of the pins and the box and engage a locking shoulder on the other of the pin and the box.

Abstract: An extendible ballcock assembly including a support pipe threaded at its lower end for partial receipt in a support fitting.The support fitting furthermore includes a peripheral cavity in the upper end thereof adapted to receive a toroidal seal. The seal includes a threaded interior surface conformed to the support pipe threads and is compressed into the fitting by a compression nut. At the upper end the support pipe terminates in a valve assembly which includes antisiphoning provisions.

Abstract: A valve core having a barrel particularly adapted for use with a fluorocarbon gasket in which the area of the barrel under the gasket is defined by three annular surfaces of successively smaller diameter connected by beveled transition areas. The stepped configuration of the barrel in combination with a tapered valve stem seat provides areas of relatively high unit loading of the gasket against the stem seat bounded by areas of relatively low unit loading.

Abstract: A connector for Teflon tubing having a male connector with a tapered end providing a male conical sealing surface engageable with a conforming internal conical sealing surface machined in the end of the Teflon tubing. A collet having an annular collar conforming to and surrounding the interfitting male connector and end of tubing provides with the male conical sealing surface an axially extending wedge-shaped annulus for receiving and gripping the internally tapered end of the Teflon tubing.

Abstract: The hydraulic control system including an accumulator includes a safety connecting means for connecting the accumulator to the system so that partial disengagement of the connecting means automatically vents the accumulator to the sump of the hydraulic system.

Abstract: A threaded mechanical joint wall sleeve comprising a cylindrical member having opposite ends with inside and outside surfaces. The cylindrical member is adapted to be centrally positioned relative to a wall member and has an annular collar extending outwardly therefrom which is imbedded in the wall member. A pair of flanged end members or adapters are threadably secured to the outside or inside surfaces of the opposite ends of the cylindrical member and are adapted for attachment to the opposite sides of the wall member. A wide variety of wall thicknesses and pipe diameters may be accommodated due to the fact that the length of the cylindrical member may be varied and due to the fact that the adapters may be either threadably secured to the external threads or the internal threads provided on the opposite ends of the cylindrical member.

Abstract: Pipe connectors particularly useful in securing sections of an underwater marine riser together, including a pin received in a box and bearing against a box shoulder, the pin and box being secured together by coengaging members mounted on the box, and between the pin and box, and forced against a shoulder at the outer portion of the pin over substantially 360.degree. of the shoulder, to correspondingly force the outer end of the pin against the box shoulder, with the contacting pin and box surfaces axially preloaded against each other. The coengaging members can include a plurality of lock dogs mounted in the box and movable radially inwardly against a ring device disposed between the box and pin and engaging the shoulder at the outer portion of the pin, the dogs and pin device having coengaging cam surfaces causing dogs to exert an axial thrust on the ring device which is transmitted from the ring device to the pin shoulder.

Abstract: A mechanical pipe joint comprising a length of metal pipe having an annular groove at one end, in which there is loosely received an annular compression ring. A companion pipe fitting part is provided, which telescopically receives the metal pipe. Disposed between the latter and the pipe fitting part is an axially compressible, radially expansible packing ring. One end of the packing ring seats against an internal shoulder on the companion pipe fitting part, with the other end of the packing ring being engageable with the compression ring. The pipe fitting part has internal screw threads, and a hollow nut having external screw threads is received in the bore of the fitting part, with the inner end of the nut being engageable with the compression ring. A second shoulder is provided in the bore of the pipe fitting part, constituting a seat for the end of the metal pipe.

Abstract: Rapidly connectable and disconnectable pipe union, comprising a bush on which are fixed one or more pipes provided with a notched flange. It comprises, in addition, a union body on which are fixed one or more pipes. This body comprises an outer threading on which is screwed a nut provided with a toothed rim and a sliding sleeve, connected to the nut by a ring. This nut comprises a toothed rib which meshes behind the notched flange. One application of the present invention is the connection of underwater pipes with one another or onto underwater apparatus by divers or by remotely controlled devices.

Abstract: A spout for a gasoline nozzle providing vapor control for gasoline vapor produced during the filling of a vehicle tank. The spout includes a curved rigid tube having an inlet end for attachment to an outlet of a gasoline nozzle and an outlet end adapted to extend into the mouth of a fill tube of a vehicle tank. A rigid housing surrounds the tube and has a rearward end in sealing engagement about the tube, a forward end and a vapor outlet port. The housing defines, with the wall of the tube, a vapor receiving chamber therebetween. Vapor passages are located at the forward end of the housing which communicates with the chamber and the port as well as with the vehicle tank. The forward end of the housing is supported by a sleeve having a rearward end which extends into the forward end of the housing and a forward end that extends into the fill tube of the tank, the forward end of the sleeve having openings for the receipt of vapor from the tank which communicate with said passages.

Abstract: In a joint for pipe, a first sleeve surrounds and is bonded to the leading edge of a pipe section. A second sleeve, which acts as a male nut, is positioned on the pipe section rearward of the first sleeve, is externally threaded, and has an internal diameter greater than the diameter of the pipe section upon which it is mounted. An elastomeric spacer ring is positioned intermediate the two sleeves. A collar is bonded to and extends from an end of a second pipe section. The collar has an internally threaded portion adjacent its forward end for threaded engagement with the externally threaded second sleeve on the other pipe section, and has a second portion rearward of the threaded portion which is adapted to receive the first sleeve and spacer ring on the other pipe section. This second portion of the collar has an internal annular groove and a sealing ring in the groove for engagement by the first sleeve.

Abstract: The present invention relates to a coupling useful for repairing broken or otherwise damaged tubing. More particularly the invention includes a coupling body member which accepts the cut ends of the tubing being repaired, a pair of washer-seals one for each tubing end and a pair of locking rams which drive the washer seals into the coupling body member and into an expanded fit thereby providing a secure fitting. The rams are threadably received into the coupling body member and locked thereon against unintentional reverse rotation.

Abstract: In a connecting device for connecting chromatographic separating columns of glass to terminal fittings on a chromatographic apparatus, each end of the column is surrounded by a metallic sleeve. A sleeve made of synthetic plastic material, which is of substantially stable shape at least up to a temperature of 350.degree. centigrade even if subjected to pressure, is interposed between said end and said metallic sleeve. A preferred material is polyimide. The plastic sleeve has at least one conical end face and is held in sealing engagement with the end of the separating column, on one hand, and with the metallic sleeve, on the other hand, by a sleeve shaped thrust member, which is axially movable relative to the metallic sleeve to exert an axial force on said plastic sleeve. A radial sealing force is exerted on the snthetic plastic sleeve through its conical end face by an abutting complementary conical surface.

Abstract: A union device comprises a body having an inner bore communicating with an enlarged annular opening in a face of the body. A separate annular piece is secured in the opening with a press-fit by means of an external barb on the piece which opposes removal of the piece. The piece has an oppositely directed internal annular barb which engages in the outer surface of the end of a press-fitted flexible tube to tightly secure the tube without constricting its inner passageway which communicates with said bore.

Abstract: An adjustable drop or riser nipple for sprinkler systems and the like, characterized by few, simple parts and comprising short, telescoping inner and outer lengths of pipe having interposed between them a locking or drive ring which acts against an expansible, resilient sealing ring so as to lock the pipes in any of different adjusted axial positions as well as to seal the same to each other. The locking ring is part of an exposed nut threaded into the projecting end of the outer pipe. The outer pipe intermediate its ends has fixedly attached in it an abutment ring which engages one end of the resilient sealing ring in the pipe.

Abstract: In a connecting device for connecting chromatographic separating columns of glass to terminal fittings on a chromatographic apparatus, each end of the column is surrounded by a metallic sleeve. A sleeve made of synthetic plastic material, which is of substantially stable shape at least up to a temperature of 350.degree.C. even if subjected to pressure, is interposed between said end and said metallic sleeve. A preferred material is polyimide. The plastic sleeve has at least one conical end face and is held in sealing engagement with the end of the separating column, on one hand, and with the metallic sleeve, on the other hand, by a sleeve shaped thrust member, which is axially movable relative to the metallic sleeve to exert an axial force on said plastic sleeve. A radial sealing force is exerted on the synthetic plastic sleeve through its conical end face by an abutting complementary conical surface.

Abstract: A fabricated packed pipe coupling gland suitable for a connection where there is at least one brittle pipe, the coupling forming a pressure tight, leak proof coupling which is semi-rigid. The coupling is particularly useful for coupling glass pipe to metal pipe for conveying highly corrosive vapors at high temperature, for example heated titanium tetrachloride vapors to a reactor for forming titanium dioxide.