Particular seal shape

In a knife gate valve, an elastomer O-ring is held in an annular groove in a face of a valve seat by cotter pins having their eyes embedded in the O-ring and their shanks extending through the valve seat and clinched over. The eyes are adhered to the O-ring by vulcanization of the O-ring.

A pipe coupling for connecting pipe sections fitted into opposite ends of the coupling which is formed with a plastics sleeve having tongues formed integrally with the sleeve on opposite ends thereof. These tongues fit in openings in plastics clamping rings at opposite ends of the sleeve and engage with...     

Disclosed herein is a metallic V-ring sealing member capable of sealing hydraulic fluid against egress from a hydraulic system. The sealing member of the invention is fabricated from a metal capable of undergoing an austenitic to martensitic state change upon cooling below a transition temperature and...     

A seal for a duct terminator, that is adapted to be formed with an underground utility vault, is secured to the bell-mouth portion of the duct terminator, and is operative to facilitate the molding of the utility vault, and after being embedded in the utility vault, provides additional seals to prevent...     

A coupling arrangement for tubes, pipes or like members in a washing machine comprises one or more tubes provided with a ring packing on one end thereof, a coupling member on the machine, and a clamping device for engaging the tube. The ring packing is formed in three integral portions including a slide...     

Two annular members, such as a sleeve and an abutment ring, are held together by a snap ring of generally V-shaped (or Y-shaped) cross-sectional profile with a pair of lips with a mirror-symmetrical confronting annular grooves of the members, the arms of the V (or Y) resting against tapering rims of...     

An elastomeric seal for sealing a large annular space having a groove on the low pressure side so that the seal will deflect easily when inserting a cylinder from the low pressure side and will withstand high differential pressure without blowing through.

A pipe joint in which an inner pipe is telescoped in an outer pipe includes a first and second expanded portion on the outer pipe. A packing member is disposed in the annular space between the second expanded portion and the inner pipe and a ring element is disposed in aligned annular grooves in the...     

Gasket material which is curved in cross-sectional shape. The curved section is placed between mating flanges situated around an opening such as an RF conduit. The radius of curvature is such that the modulus of elasticity is not exceeded upon compression of the flanges and thus the gasket is reusable...     

This is an improvement in Wellstein's U.S. Patent No. 3,812,910 issued May 28, 1974 comprising generally: (1) a positive supporting hook for the drop pipe slide member which cooperates with the hanger member on the nipple that extends radially through an opening in the well casing; (2) an improved shaped...     

A light walled circular metallic conduit including a first conduit member and a second conduit member. An expanded section is at one end of the first conduit member and an end of said second conduit member is snugly telescoped within said expanded section of said first conduit member. The expanded section...     

This is an improvement in Wellstein's U.S. Pat. No. 3,812,910 issued May 28, 1974 comprising generally: an improved shaped frustoconical seat for the saddle contoured gasket or seat in the washer or nut for better sealing the outside of the well casing with the outside of the nipple that extends through...     

Gasket material which is curved in cross-sectional shape. The curved section is placed between mating flanges situated around an opening such as an RF conduit. The radius of curvature is such that the modulus of elasticity is not exceeded upon compression of the flanges and thus the gasket is reusable...     

A waste drain connection for coupling the waste outlet of a plumbing fixture having a receptacle for a fluid-sealing gasket thereabout to a plumbing drain pipe including a fluid-sealing member having a sleeve portion adapted for intimate fluid-sealing about the plumbing drain pipe and an outwardly-extending...     

A joint between two members and a gasket therefor. The members have transverse annular opposed faces. The gasket is a ring having a base and a frusto-conical lip extending radially inward from the base. The base is adapted to be clamped between the two faces of the members and has serrations on one side...     

A wall duct assembly is disclosed comprising a duct piece or unit having arranged on its outside diameter retaining grooves for sealing structures. The sealing structures can be adjusted through the aid of pressure rings to provide effective sealing of the duct unit in walls or like structures.

An air line connector for use on an automatic coupler having a combination seal in the form of an apertured seal holder containing annular grooves in a front and rear face with seal members therein and a locating seal member about the diametral periphery of the holder.

A slip-on type pipe joint construction wherein an annular sealing rubber packing is fitted in an annular recess formed in the inner peripheral surface of the socket of a pipe and the spigot end of another pipe is inserted in the socket, whereby the pipes are connected together. The shapes and sizes of...     

A joint between adjacent ends of two pipes arranged to convey liquid under pressure, and which permits relative movement of the pipes, has a first sealing surface of annular form associated with one of the pipe ends and a sealing member supported by the other pipe and movable axially relatively thereto,...     

A plastics material pipe coupling socket having a sealing ring locked in position in the socket by a locking ring. The locking ring is of channel section and is snap-fitted to the socket with the socket mouth snugly received in a recess in the channel base. A substantially enclosed annular space is defined...     

The specification describes a pipe joint suitable for fluid conducting pipework in which there are inner and outer tubes defining a jacket for fluid heating or cooling medium. The joint comprises a gasket shaped to provide continuous annular seals around the inner tube and the passageways along which...     

The specification discloses a torque coupling having two tubular coupling members having flanges with interlocking teeth wedged together by a clamping ring. The flanges have opposed grooves in which are positioned elastomer sealing rings having shallow grooves with sharp edges forming vacuum seals with...     

An interface seal is mounted on a tubular end portion of a connector body. The interface seal has a biconic head having a converging section which is engaged and folded back toward a diverging section by a conical ramp at the end of a mating connector body when the connector bodies are locked together.

A conduit coupling assembly having a hub, elastomeric seal, and retainer ring for fastening and sealing a conduit which is inserted into the coupling assembly. The retainer ring has a contoured portion that aligns the conduit prior to its engagement with the seal. The seal has plural exterior, peripheral...     

An effective seal is provided which fulfills the requirement for a trouble free joint, particularly "V" band joints which are dependent on accurately controlled tube end flanges. Rolled sheet metal flanges are particularly subject to excessive leakages due to deformation during handling and installation....     

An improved sealing ring for forming socket-type pipe joints. The ring according to the present invention has an elongate cross-section having a bulbous leading end portion and a trailing end portion having a pair of fins extending towards the respective sealing surfaces. The sealing ring provides a...     

An end sealing member joined to the ends of a pipe for cooperation with a complementary end sealing member on another pipe to seal the joint formed when at least two such pipes are joined in end-to-end relationship. Each end sealing member has upstanding members extending into the surface of the pipe...     

The sealing ring is initially made with two arms which are oriented to define a fold. When in place between two overlapping pipes, the inwardly directed arm is rolled outwardly into coaxial relation with the unfolded arm in order to provide a tight seal between the two pipes. The seal ring may be initially...     

A seal arrangement in which two intersecting conduits are sealed from each other. A sleeve insert is locked in a sealed relationship within one conduit enclosing the openings of the intersecting conduit.

A sealing ring of elastic material, more particularly for a plug-in type pipe joint made up of two concentrically interfitting pipe elements of a mineral material in the case of which the sealing ring can be pre-assembled by insertion into the outer pipe element or socket before the insertion of the...     

A pressure and liquid tight compression fitting particularly adapted for attachment to a beverage container. An externally threaded body portion of the fitting is inserted through a wall of the container and is clamped to the wall by means of a nut. A first pressure seal is effected by an O-ring received...     

A seal assembly for a conduit connection including a first and a second conduit part, each having an axially extending flow passage and an end surface radially intersecting the flow passage. Each of the conduit parts includes an internal sealing cavity adjacent the end surface and radially off-set from...     

A sealing ring to be received by an annular groove in one of two pipe elements which can be inserted one into the other, to seal between the pipe elements. The sealing ring comprises two integrated portions of different hardnesses, forming two surfaces enclosing an obtuse angle one of said surfaces being...     

A composite washer is comprised of two identical flexible mating half-washers each offset along a diameter and slit along an offset radius. Two half-washers are mated after being slipped over a cable section to provide a fluid-resistant barrier in a cable splice enclosure.

A valve has a metal-to-metal seal system between the flow bores of the valve body housing and each of the valve seat hubs. Each seal system includes an elastic dished metal ring gasket and a retainer ring. Each metal gasket is softer than each of the seat hub and the valve housing, is of rectangular...     

A stationary sealing ring adapted to seal a grooved carrier and a circular housing is disclosed. The sealing ring includes a plurality of stacked, annular parted ring segments dimensioned to slip within the carrier groove and an expander which exerts a radial force on an inner face of each of the segments....     

A joint for jointing the ends of two pipes, particularly lined pipes, in which a radial resilient portion extends between the two ends of the pipes, two oppositely extending axial portions at the radial inner part of the radial portion each engage within the interior of one of the two pipe ends. Construction...     

A dual seal gasket specifically configured to seal the joint between adjacent concrete pipes comprising an annular substantially resilient member including a first retainer element engaging disposed on the outer surface of one of the adjacent concrete pipes having its longitudinal axis substantially...     

This is a method of making metal gaskets by coating a hollow cylindrical metal blank on each of the entire inner and outer peripheral surfaces with a soft metal to be of a fixed thickness and then cutting it off along an imaginary conical surface having an apex on its center axis.

A sealing construction for the interconnection of two pipes in a vacuum cection, comprises, end flanges of the pipes which have conical sealing surfaces and including a substantially C-shape metallic ring disposed between the flanges which has at least a portion of its surface in rolling and sealing...     

A pressure vessel seal for sealing a pressure vessel joint of a pressure vessel to prevent fluid migration between an interior wall and an interior surface of the pressure vessel joint including an annular seal ring, coatings with the annular seal ring for engaging the pressure vessel for effecting a...     

A new tubular sealing device made of soft elastic material and having a bore circular in cross section and extending axially therethrough, the sealing device including an inverted frustoconical outer periphery and an inner peripheral surface defining the bore, the inner peripheral surface having a constricted...     

Concrete pumping conduits are connected by releasable hinged couplers. The ends of the conduits include metal pipes formed with annular grooves including a circular peripheral base. The coupler has a cup-shaped cross-section and a sealing gasket is located within the base of the cup-shaped recess with...     

A pipe coupling and gasket is provided in which electrical conductivity through the coupling is assured, said coupling consisting of a middle ring with conical ends receiving an annular resilient gasket having a conductive helix made from metal wire of triangular cross section with an apex on the periphery...     

Two pipeline components (5) and (6) are sealed together by a seal comprising a U-section casing (1) and a pair of rings (2) and (3) which are surrounded at their inner diameter and at their outer end surfaces by the casing (1). Adjacent inner end surfaces (9) and (8) the rings (2) and (3) are respectively,...     

A pipe joint for joining a pair of adjacent pipe ends includes an improved gasket contruction. An annular radially outwardly extending flange is provided on the periphery of each pipe adjacent and spaced from the pipe end, a cylindrical coupling member is provided including at least one axial slit in...     

A continuous tube T is formed by spirally-winding an extruded thermoplastic ribbon R having mating edges which are joined together to form a spiral seam and having at least one reinforcing rib 3 which, when in its spiral wrapped form, projects radially out from the tube. At predetermined lengths, the...     

A cable connector comprises a screw socket, a screw nut, a packing within the screw nut and an anti-rotation bushing between the packing and the screw nut. The screw nut, packing and bushing are provided with conical portions respectively which have the same angle of taper and substantially the same...     

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...     

A grommet seal is disclosed comprising a cup-shaped part or piece adapted to provide a substantially air-tight seal between a wire, rod or tube and a metallic panel or the like through which the wire, rod or tube passes, and a mating part or piece interfitted with said cup-shaped part or piece, and adapted...     

A wellhead sealing assembly comprising a metallic sealing ring (10) which is compressed and deformed by tubing hanger load and fluid pressure to establish metal-to-metal sealing contact with the tubing hanger (20) and the tubing head (30). The outer surface of the sealing ring includes an upper cylindrical...     

This invention provides a pressure transmitting and sealing apparatus between a high or low pressure fluid line and a gauge monitoring the pressure of the fluid in the line. This apparatus transmits pressure fluctuations between the measured fluid and a dissimilar fluid in the standline line connected...     

A multiple joint box having a socket pipe and sealing bodies, the sealing bodies comprising spirally wound tape having semicircular recesses formed along its length which coincide to form circular cable apertures. The multiple joint box may be applied without the necessity of cutting or desplicing the...     

A seal assembly for downhole use in a subterranean well comprises inner and outer concentric annular sealing elements adapted to seal between an inner mandrel and an outer housing. The sealing elements are mounted in concentric annular recesses defined in relatively axially movable seal carrier members....     

A tubing head, tubing head adapter and tubing hanger are sealed against annulus fluid or downhole pressure by an upper and a lower, pressure-energizing sealing assembly. The sealing assemblies are bi-directional, pressure-energizing and operate under working pressures of up to 30,000 psi. Each assembly...     

A multi-purpose metal-to-metal seal system providing fluid-tight integrity at the area of contact between the seal element and the surface against which it bears, throughout wide variations in pressure and temperature, and especially during and following exposure to a fire atmosphere.

A rolling diaphragm seal is inserted between a pair of telescopic tubes containing a laser beam and a reflective mirror to preclude ambient air or lubricant from impinging on the mirror or for changing the density of the air within the tube to cause a change in intensity of the laser beam. The telescoping...     

Disclosed is a remotely operable releasable sealing coupling which provides fluid-tight joinder of upper and a lower conduit sections. Each conduit section has a concave conical sealing surface adjacent its end portion. A tubular sleeve having convex spherical ends is inserted between the conduit ends...     

A gasket (16) for sealing between a filter (10) and a support tube (12) adjacent a seat ring (14). A first sealing surface (18) is provided on the gasket (16) for sealing axially against the seat ring (14). A second sealing surface (20) on the same gasket (16) for lateral sealing against the support...     

Flexible seals for joints in pipes for example spigots, flange and sleeve joints are disclosed. A ring seal for seating in the seal groove as a pipe joint between a first pipe and a second pipe consists of a ring body, an annular cavity defined by the ring body, a pair of annular sealing lips axially...     

A gasket or seal fitting is made up of a generally flat sheet member or base with at least one pair of sealing spigots. The spigots of the or each pair are molded with the sheet member so as to be sticking out in line with each other from the sheet member on its two sides. There is a hole running through...     

An improved gasket sealing motor leads which extend from the interior of an electric motor enclosure. The gasket is provided with one or more resilient, conical bushings whose diameters extend through a wide range of lead diameters. By severing the bushings at an appropriate point, round apertures are...     

A ring joint gasket for sealing a pair of flanges in a pipe. The gasket fits in a pair of grooves in the flanges and permits the flanges to have face to face contact. The grooves deflect the gasket and create a tight seal to prevent the leakage of process materials from inside the pipe.

An annular or linear seal having a substantially K-shaped cross section. The seal with cleft seating surface provides a two-way pressure barrier when it is installed in a groove having a cross section of "sigma" shape, wherein the flat side of the K-shaped cross section of the seal with cleft seating...     

In the preferred embodiment, this invention provides a threaded pipe coupling for connection with a conventional threaded pipe end so as to effect improved sealing against internal fluid pressure and against external fluid pressure as may be required in an oil or gas well. The coupling form causes the...     

For sealing the joint between a pipe end (2) and a pipe or housing (3) into which it is to be inserted, a metal sleeve (1) has a part (a) which is secured, such as by welding, to the pipe end (2), a first annular corrugation (b) and a second annular corrugation (c) which is of greater diameter than the...     

A system and apparatus useful in establishing a metal to metal seal between members in wells. A milling tool is used to cut and/or finish a seat on a shoulder in pipe or tools in the well, which will mate and seal with metal seal surfaces on seal units lowered into the well. One seal unit has elastomeric...     

A ball valve for controlling liquid flow that comprises a tubular valve body, a ball rotatably built-in inside of the valve body, a pair of unions screwed into opposite ends of the valve body so as to be in slidable contact with the ball, and a pair of body caps connected to outer ends of each union...     

A system for sealing a pool or spa fitting includes a wall having a frustoconical hole therethrough, the hole expanding towards the outer side of the wall. A conduit or inlet fitting is disposed in the hole and has an integrally formed enlarged end portion which abuts the inner surface of the wall. The...     

An annular fluid seal for pressurized fluid systems particularly for use with a coupling having interconnectable self-sealing male and female parts. The two-part seal is mounted within an annular gland recess within the male part and includes a relatively rigid primary annular body of synthetic plastic...     

A ring for the leak-proof and traction-resistant joining of the ends of two pipes which surround one another at a radial distance, made of a basic body of soft-elastic, resilient material having cylindrical contact surfaces engaging the pipes, and of a cone ring of unyielding material embedded therein,...     

A seal for sealing between two mating faces that are curved. The seal includes a groove formed in one of the faces for encircling a passageway that terminates at the face. The groove has a depth that varies along the diameter of the groove with the curvature of the face. The base or bottom of the groove...     

A connector 10 for a fluid-flow line comprising a pair of truncated spheres, the inner 14 nesting within the outer 12, with the truncated ends facing in opposite directions. The non-truncated ends of the spheres are each connected to a different circular disc with a grid structure, called an end member...     

A seal for a cylindrical article and having two sealing members which coact to form the seal. Each sealing member has a resiliently flexible body which is connected to a rigid support at two spaced positions around the body. An intermediate portion of the body is resiliently flexible outwards between...     

A compression pressure indicator includes a compression member which is disposed within a termination and is constructed such that when exposed to a pressure above a predetermined pressure a portion of the compression member protrudes from the termination thus indicating that optimum pressure has been...     

A compression seal between opposed faces (3 & 4) of two metal members (1 & 2) comprises a metal ring (5) having a relatively thin annular web (7) and thickened beads (8 & 9) at its inner and outer peripheries defining an annular trough on each side of the web. The beads terminate in knife edges (10),...     

Improvements in the technique of sliplining a buried pipe, so as to minimize adverse affects of differences in expansion and contraction of the old and new pipe, while maintaining seals at the ends thereof is disclosed employing at each pipe end a sleeve-like pliable gasket, which is expanded outwardly...     

A marine propulsion device comprising a pivot housing adapted to be mounted on the transom of a boat for pivotal movement relative to the transom about a generally vertical steering axis, and about a generally horizontal tilt axis, the pivot housing including a rear end and an opening, a propulsion unit...     

A sealing profile made of rubber or a rubber-like material for sealing tunnel segments provided with peripherally extending recesses. The profile includes grooves extending parallel to each other on the base side in the longitudinal direction, angled lateral sides, and plane-surfaced top and base surfaces....     

Disclosed is a sealing ring comprising a molded elastomer ring having an inner ring contained therein which forms a pipe joint between two abutted pipe ends. Each of the pipe ends includes a recessed part, a flange or the like, which can be clamped together, for example, by means of a screw, and each...     

A coupling assembly includes plug and socket assemblies which are formed entirely of metal to enable them to be used at relatively high temperatures. The plug assembly includes a plug valve assembly which is operable between a closed condition and an open condition. The socket assembly includes a socket...     

A bottom hole shut-in tool incorporating a ball and seat shut-off valve and a ball and seat pressure equalizing valve. The ball elements of the valves are formed of elastomeric material, which allows the ball elements to engage their seats in continuous annular sealing contact even when debris from the...     

A seal and closure member of elastomeric material adapted to be cast in situ and comprising a cylindrical body portion and an integral frusto-conical skirt therewithin. A radially outwardly extending flange is embedded in adjacent concrete. The skirt has a knock-out web at its smaller diameter end portion...     

A pressure balanced sealing ring having a substantially S-shaped, resilient cross section including two oppositely facing convolutions, a central leg coupling the convolutions and a pair of outer legs, each extending from one of the convolutions. The ring is advantageously formed of metal and seals against...     

An aseptic pipe joint for food processing pipe fittings of the type including a pair of frustoconical ferrules having radially extending surfaces, a "C" shaped metallic ring positioned between the surfaces in abutting relation therewith, a resilient O-ring filling the "C" shaped ring to form an aseptic...     

A mould and sealing ring constitutes a mould element in forming a socket end on a pipe consisting of thermoplastic material and seals the space in a pipe joint between the socket end and the spigot end of a pipe introduced into the socket end. The mould and sealing ring comprises an annular sealing portion...     

There is provided a sealing profile formed of rubber or rubber-like material for tunnel segments having a recess therefor extending therearound, the profile having a base side facing the segment and a back side facing away from the segment, a plurality of longitudinally extending parallel flutes in the...     

A coupling is made up of annular resilient packing members having on their peripheral surfaces, a sleeve having flanges secured to opposite ends of the sleeve, and annular projections formed on the inner surface of the sleeve. When the packing members are inserted between the sleeve and pipes to be connected...     

An improved seal element especially for well packers having multiple mandrels, the improvement providing slits therein of various configurations which allow the seal element to be expanded to sealing condition in response to longitudinal compression such that the resultant stresses created within the...     

A pressure balance sealing ring having a substantially S-shaped, resilient cross section including two oppositely facing convolutions, a central leg coupling the convolutions and a pair of outer legs, each extending from one of the convolutions. The ring is advantageously formed of metal and seals against...     

A tube and shell type heat exchanger providing multi-pass contraflow of two heat exchange fluids includes a cylindrical outer shell, a modular baffle assembly guiding a shell fluid, a plurality of multi-wall tube sets and a pair of opposed end assemblies. A fixed end assembly fixedly receives one end...     

A nuclear steam supply steam generator primary nozzle 16 is sealed by a nozzle dam having segmented bulkhead portions 42 and 45 with peripheral flanges 46,50,52. A rubber diaphragm with a body 54 and peripheral strata form oppositely opening cavities 56 and 58. Hydraulic pressure from either side enters...     

A tube and shell type heat exchanger providing multi-pass contraflow of two heat exchange fluids includes a cylindrical outer shell, a modular baffle assembly guiding a shell fluid, a plurality of multi-wall tube sets and a pair of opposed end assemblies. A fixed end assembly fixedly receives one end...     

A gasket for use in a segmented pipe coupling has portions at its ends of greater radius than the radius of the portion intermediate the ends, thus enabling the pipe coupling to be applied to a pipe in the absence of lubricants.

A sealing profile formed of rubber or rubber-like material is provided for sealing tunnel segments which have circumferential recesses. There is a plurality of slotted grooves running parallel in the lengthwise direction on the base side of the profile and a plurality of channels running parallel in...     

Disclosed herein is a grommet for supporting a bundle of electric wires which passes a fixing hole formed in a partition panel. The grommet comprises an elastic member and a rigid member to be assembled with the elastic member. The elastic member has a wire securing portion in which the bundle of the...     

A clamp for repair of a leak in a pipeline or other structure having a flanged joint. The clamp comprises arcuate clamp sections, typically two semi-circular sections, which are assembled end to end to form a clamp ring about the flanges at the site of the leak. Each clamp section has an inner surface...     

A connector seal is provided for the interposition between an access well, or hole, in a wall of a fluid containment apparatus and the other surface of a conduit, or pipe, passing through that hole to transport fluid to the container without leaking. The connector seal has as a main element a spring...     

A coupling having an internal pressure-loaded V-seal between a male member and a female member incudes a sleeve member insertable into the female member bore. The V-seal is repeatably positionable in the sleeve member such that insertion of the male member serves to slightly compress the V-seal and thereby...     

An elastomeric grommet suitable for sealing a substrate when compressed in an axial direction. The grommet is made so that an axial passageway has an inner central section of substantially constant cross-section and first and second inner end sections which taper inwardly from first and second radial...