Abstract: The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal with first and second seal segments adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs and restraining members placed externally of the ribs in each segment. The seal includes grooves positioned over each segment for expansion bands used to compress the seal against the inside of a conduit. The invention also includes an expansion band having a radiused contacting surface which in combination with a locking member of the invention positioned between an outer restraining member and an adjacent rib providing substantially improved sealing.

Abstract: In order to provide watertight properties between a spring socket (1) and a release socket (2) for a plug of a push-pull connector, a bellows expansion joint (5) is provided between the spring and release sockets. When the two sockets are spaced apart, the bellows expansion joint is in the rest (non-stressed) position. When the release socket is driven closer to the spring socket, a stress is exerted on the bellows expansion joint (6, 7). This helps to force back the release socket. By this structure, improvements are shown in the vibration resistance and, at the same time, in the watertightness of the plug of a push-pull connector.

Abstract: The present invention is a sealing mechanism for fluid for preventing leakage of fluid from a portion of threads of two members 2, 3 that are connected to each other via the threads, at least one of the two members having a hole of circular cross section for accommodating the fluid formed therein. The sealing mechanism for fluid includes an receiving portion 24 formed in an inner periphery of the hole and having a diameter larger than a diameter of the hole and a desired axial length, and a tubular seal member 10 having an axial length longer than the axial length of the receiving portion, in which the two members and the tubular seal member is made of the same kind of fluororesin, and when the two members are interconnected by engagement of the threads, the tubular seal member is axially compressed and deformed by at least 5% or more.

Abstract: A cable sealing arrangement is provided for limiting the ingress of fluid into a location about a cable, such as a telephone wire enclosure, which generally includes a fitting, a sealing member, and a nut. The cable sealing arrangement provides a fluid-proof seal about a cable through radial expansion of the sealing member. Also, various slitted sealing members are provided each leaving at least one slit formed there through which allows for forced displacement of portions of the sealing member and insertion of a cable thereto. The slitted sealing members obviate the need for threading a sealing member over the entire length of a cable.

Abstract: A resilient compressible gasket having an embedment portion, a pipe engaging portion and a intermediate “radius” portion integral with the embedment and pipe engaging portions. The gasket assumes a “pleated” configuration when in the operative position, the pipe engaging portion extending through the embedment portion, yielding a gasket which compensates for deviation of the pipe from a nominal horizontal alignment without any reduction in the water-tight seal provided by the gasket. The gasket is sized to provide for easy insertion of a corrugated pipe into the pipe engaging portion while providing an excellent water-tight seal when clamped into position about one or more annular recesses and peaks of the corrugated pipe. Another embodiment of the gasket is designed to be secured to a cored or performed opening in a cast member through the use of an expansion-type clamping assembly.

Abstract: A storm sewer overflow control device for controlling runoff surge flows from a generally vertically oriented storm drain into a generally horizontally oriented storm sewer pipe includes an engagement portion configured for insertion into the storm sewer pipe, a flow control portion attachable to the engagement portion and configured for receiving runoff surge flow flowing down the storm drain and slowing the flow for entry into the storm sewer through the engagement portion. The engagement portion is radially expandable to tightly and frictionally engage an interior surface of the storm sewer pipe, and preferably is configured to expand radially as it is shortened axially.

Abstract: An improved seal for a rotary valve for high temperature and high pressure fluids. A removable seal member adapted for disposition between a valve body and a valve member rotatably disposed in the valve body is provided. In one aspect of the invention, the seal member is adapted so that pressure exerted by the valve is sufficient to induce cold flow in the seal member. In another aspect of the invention, the seal member includes a pair of longitudinally disposed slots.

Abstract: A connection adapted to connect an intake end (10) of a discharge pipe (9) and an outlet end (8) of a connecting curve (7) of a water toilet, wherein the outlet end (8) projects concentrically into the intake end (10) of the discharge pipe (9), said connection comprising a rubber-elastic sealing collar (11), adapted to seal said outlet (8) and said intake end against one another, wherein the sealing collar (11) is h-shaped in a radial section, and has a first downwardly projecting region (12) adapted to tightly engage an outside of the intake end (10); a second downwardly projecting region (13) adapted to tightly engage an outside of the outlet end (8) and a upward-projecting region (14) adapted to tightly engage against the outside of the outlet end (8) of the connecting curve (7).

Abstract: A cylindrically curved rectangular face seal is provided for a cross-ported barrel type rotary valve member. The seal has a central flow orifice therethrough with an annular raised rib formed about the orifice and extending in a radial direction from the concave inner face of the seal. The opposite edges of the seal extending in an axial direction each have a notch or rib thereon for axial sliding engagement in grooves provided in the valve body. The annular rib about the orifice accommodates dimensional variation in the valve parts to ensure a rotary sliding seal on the rotary valve member.

Abstract: A method and a device for preventing seeping liquid from entering equipment along a connecting line such as an electrical line or a pipe line are disclosed. The method is performed by using a liquid-insulating device surrounding a section of the connecting line to stop the liquid from crossing thereover to reach the equipment. The liquid-insulating device is made of a liquid-proof material, and preferably includes a guiding member to guide the liquid stopped thereby to flow away from the connecting line.

Abstract: An apparatus (10) includes a bearing (24) linking first and second vehicle parts (12, 14) for movement relative to each other, and a boot seal (30) protecting the bearing (24). The boot seal (30) is a tube of heat shrinkable thermoplastic material. The tube (30) has a first end portion (34) shrunken against the first vehicle part (12), a second end portion (42) shrunken against the second vehicle part (14), and a flexible intermediate portion (44) which is deflectable between the opposite end portions (34, 40) upon movement of the vehicle parts (12, 14) relative to each other.

Abstract: A method for repairing cracked jet pump riser assemblies in a boiling water reactor utilizes a spacer clamp and a seal collar. The spacer clamp is secured to the riser assembly to limit horizontal displacement of the riser assembly, and the seal collar is secured around the weld joining the riser elbow and the thermal sleeve to limit leakage from the weld over a predetermined range of horizontal displacement defined by the spacer clamp. A method for repairing a circumferential weld connecting an elbow of a jet pump riser assembly with a thermal sleeve involves positioning the weld within a seal collar and securing the seal collar on the jet pump riser assembly so that seals of the seal collar sealingly contact the elbow and the thermal sleeve, respectively, circumferentially on opposite sides of the weld.

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 slip joint for an engine exhaust system having a male and female manifold section which utilizes a sleeve assembly that is disposed about one of the manifold sections. The sleeve assembly has a positioning portion and locating portion. The positioning portion is in sealing engagement with one of the manifold sections and the locating portion is in resiliently sealing engagement with the other manifold section. The principle use is for exhaust manifold connections, however any joint that has thermal expansion or encounters vibrational loads will benefit from this invention. For example, exhaust gas recirculation systems may have passages connected with this invention.

Abstract: A safe mountability of a radial seating ring without mistakes, in which the radial sealing ring comprises a spring steel sheet, coated with an elastomer and having a cross section of undulating course, with at least one bulge pointing toward the interior of the sealing ring and at least one bulge pointing outward in the opposite direction, for contact with parts to be sealed off.

Abstract: A sealing grommet is for use in coupling in sealed relation a drain pipe depending from a roof and a co-operating leader pipe. The bottom end of the drain pipe is inserted into the top end of the co-operating leader pipe. The outside diameter of the drain pipe is smaller than the inside diameter of the co-operating leader pipe by an unspecified distance. The sealing grommet comprises an annular base portion having top, bottom, radially inner side and radially outer side surfaces. An annular interior wall portion extends upwardly from the base portion to terminate at a top edge, and is defined by opposed inner and outer wall surfaces. The interior wall portion has an overall inside diameter defined by the inner wall surface. A substantially resilient annular exterior wall portion extends upwardly and outwardly from the base portion in spaced apart relation to the annular interior wall portion, to terminate at a top edge, and is defined by opposed inner and outer wall surfaces.

Abstract: A method of forming a metal-to-metal seal in high pressure applications with low contact stress. Firstly, providing a first elongate pressure containment member having a surface of revolution. Secondly, providing a second elongate pressure containment member having an exterior surface, an interior surface, a remote end, and a thin walled extension sleeve having a first end and a second end. The first end of the thin walled extension sleeve is conjoined with the second elongate pressure member at the remote end. The second elongate pressure containment member is of a greater thickness than the sleeve. Thirdly, coupling the first elongate pressure containment member and the second elongate pressure containment member with the sleeve positioned in close relation to the surface of revolution.

Abstract: A fuel injection device for diesel engines, with a nozzle holder (1), the pressure channel (2) of which is connected with the fuel injection pump on the one side, with the nozzle on the other side, comprises a nozzle body (3) which is connected with the nozzle holder (1) by means of a nozzle adjusting nut (10). For sealing purposes, there is an intermediate disk (13) between nozzle holder (1) and nozzle body (3). To seal the high-pressure connection in the region of the pressure channels (2, 4), there is a deformable metal sealing body which rests on a sealing surface and is held in a conical seat (19) in the region of the opening of the pressure channel (2) of the nozzle holder (1).

Abstract: A resilient gasket is disclosed for providing a seal between corrugated pipes having a plurality of concentric ribs on their outer surfaces, such as drain and sewer pipes to be buried in soil. The gasket comprises a base which is received around a first pipe over top of a rib adjacent an end of the first pipe, with an inner surface adapted to mate with a radially outer surface of the rib, and with legs adapted to extend along forward and rearwardly-sloped faces of the rib. The outer surface of the base is provided with sealing elements to engage the inner surface of the bell adjacent the end of a second pipe. The gasket also has a flap extending outwardly and forwardly from the forwardly extending leg. The flap and the forward leg form a V-shaped member. The flap engages the inner surface of the bell when the first pipe is inserted into the second pipe, and the gasket is rotated rearwardly relative to the rib.

Abstract: A tube plug seal has an improved tear line pattern which tears when a mating tube having a circumference smaller than the seal is inserted through the seal. The improved tear line pattern is designed to initially tear where the circumference of the mating tube applies the highest stress. As a result, the improved tear line includes a portion which extends at least partially circumferentially about an axial center point of the seal. More specifically, the circumferential portion of the improved tear line pattern generally aligns with a circumference of the mating tube. In one embodiment the improved tear line pattern is C-shaped.

Abstract: An internal flexible dust seal for connecting and accomodating misalignment, expansion, contraction, and torsion between openings of adjacent ducts carrying dust and particulate laden hot gases. The internal flexible dust seal can undergo lateral, axial, angular, and torsional movements while at the same time keeping any particulate matter or dust from leaving the duct and/or entering the space between liner plates and the insulation cavity of an outer gas flexible seal or expansion joint. The internal flexible dust seal is fixed to the inside of the duct.

Abstract: A watertight grommet for a wire harness including a core made up of a pair of complementary semi cylinders which are placed together to form a complete cylinder surrounding the harness. The harness extends through the bore of the complete cylinder and is tightly retained thereby in a watertight matter. There is an enlarged inner diameter of the bore near the front end, thus forming a gap between the harness and the inner surface of the bore wherein a sealant is introduced. A cylindrical sleeve is drawn over the outside of the core to complete the seal. The latter can have a groove therein for mounting on a separator.

Abstract: A sealing element for a hydraulic screw connection, comprising a hollow screw and an annular stub, for securing a rigid or flexible line connected or connectable to the annular stub and to a hydraulic component, wherein the annular stub is fixed in a pressure medium-tight fashion, via its plane end faces, between a head of the hollow screw and the component and swiveled into an arbitrary angular position relative to the component about the center line of the hollow screw. Two sealing element regions disposed in sealing seams located between the head of the hollow screw and the annular stub and between the component and the annular stub, are joined via a substantially cylindrical portion, and this cylindrical portion. This portion extends in the seam concentric with the largely cylindrical wall of the hollow screw. It has at least one radial opening.

Abstract: A metal to metal seal and a method of forming the same includes providing a pair of opposed clamping faces. Each of the clamping faces surround apertures. Seal grooves serve to widen each of the apertures. Each of the seal grooves have truncated angular corners. A malleable metal sealing ring is positioned in the seal grooves. The sealing ring has truncated angular outer edges complementary to the truncated angular corners in the seal grooves. The clamping faces are clamped together in face to face relation to energize the sealing ring. The sealing ring has an enlarged inner diameter to create an deflectable edge at the truncated annular edges. The subsequent application of internal pressure serves to promote deflection of the metal sealing ring at the truncated angular edges and further energize the sealing ring.

Abstract: A pipe support for mounting a pipe within a pipe-receiving aperture of a concrete container. The pipe support includes an annular anchor, a pipe seal and a removable closure. The annular anchor is for being cast in place within the concrete container surrounding the pipe-receiving aperture. The pipe seal has a flexible, reversible, generally frusto-conical outer portion extending axially rearward and radially inward from the anchor to a joint of the pipe seal. A flexible, reversible, generally frusto-conical inner portion extends axially forward and radially inward from the joint to a smaller diameter end of the pipe seal for receiving a pipe in a generally water-tight manner. The outer portion of the pipe seal can be reversed so that the pipe seal will extend out of the concrete container so that a pipe can be inserted therethrough from inside the container.

Abstract: A fuel backflow-preventing device for use in a vehicle, which includes a fuel tank containing an inlet conduit, a floating device slidably disposed within the inlet conduit and operative to seal the inlet conduit, and spring means operatively associated with the floater device and biased to effect the sealing of the inlet conduit.

Abstract: A bore seal assembly for sealing between first and second adjoining tubular members which comprises a cylindrical seal sleeve having a bore and two radially outwardly extending sealing lips for engaging a seal pocket formed in the adjoining ends of the first and second tubular members, a cylindrical wear sleeve mounted within the bore for supporting the seal sleeve within the seal pocket, and an elongated erosion sleeve extending longitudinally from the wear sleeve into at least the first tubular member, whereby the erosion sleeve protects the first tubular member against erosion.

Abstract: A sealing device for a cavity into which a wire is inserted, the sealing device including an elastic sealing member which sealingly engages the inner surface of the cavity and the outer surface of the wire so as to prevent entrance of water into the cavity, and a rigid retainer associated with the sealing member and engaging the cavity so that, when the wire is bent transversely, deformation of the sealing member is substantially prevented and the integrity of the seal is maintained. This sealing device reliably prevents entrance of water, even if water is sprayed thereon at high pressure.

Abstract: An anchored guide tube centered on an axis and a conduit passing axially through the tube are relatively sealed by a feedthrough fitting having a flexible and shrinkable sleeve having an inner portion secured to an outer surface of the guide tube at an end thereof and a outer portion folded back over the inner portion and forming an annular fold generally at the tube end. A lubricant or the like is provided for facilitating sliding of the outer portion on the inner portion from a storage position folded back over and lying on the inner portion and a use position extending outward past the tube end away from the inner portion.