Abstract: A tubular wall sealed at a first end by an integrally molded annular wall, forming a cap, is cast in the concrete wall of a low pressure vessel, forming a sealed cavity in the concrete. One end of a rubber tubular gland wrapped sealingly around the outside of the second end of the tubular wall is sealed in the concrete by a radially extending cast-in anchor. The diameter of the other end of the rubber tube is smaller than the diameter of the tubular wall of the cap.

Abstract: A unique fluid pipe/duct coupling/fitting having flexible arcuate pliable and deformable gaskets such as an O-ring providing the seal between an OD pipe and the ID coupling or fitting and an uncouple retard structure for promoting the insertion of the tubular fluid connector from backing away or withdrawing from the fluid pipe into which the ID coupling is being inserted. The uncoupling retarder structure includes a first starting groove and a last or final resting groove both disposed on the tubular wall of the fluid connector pipe, the first beginning and last final resting groove being disposed and having a predetermined longitudinal distance along the length of the pipe wall between them.

Abstract: An airtight adapter to be mounted to an airtight unit requiring airtightness, e.g. a glove box, with which it is possible to easily replace a part of the airtight adapter while maintaining airtightness. The adapter has an outer-cylinder adapter body, an internal adapter body inserted into and fitted in the outer-cylinder adapter body and at least two annular sealing members positioned between the internal adapter body and the outer-cylinder adapter body.

Abstract: A boot/ring comprising an annular core made of a closed-cell elastomer foam entirely coated with elastomer foam entirely coated with an elastomer covering that can withstand the electric insulating and cooling liquid contained in connector, at the connector operating temperature. Application: to high-voltage connectors for X-ray apparatuses.

Abstract: A branch gasket for a tapping sleeve is disposed about the side branch aperture in a main fluid conduit and between and in sealed contact with the main fluid conduit and an outer sleeve connected to the side branch. The branch gasket is comprised of a flexible, compressible, resilient material and includes a hydraulic lip, a stainless steel insert ring, a first pair of inner O-ring seals in intimate contact with the main fluid conduit, and a second pair of outer O-ring seals in intimate contact with the outer sleeve. A mat gasket for use with a tapping saddle is disposed about an aperture in a main fluid conduit and is further disposed between and in sealed contact with the main fluid conduit and an outer sleeve member. The mat gasket includes an aperture aligned with the aperture in the main fluid conduit and outer and inner portions in sealed contact with the outer sleeve member and the main fluid conduit, respectively.

Abstract: A double booted flexible entry boot provides a fluid-tight fitting between a wall of a fluid containment region and a conduit passing through the wall. An inner seal member is disposed within the containment region, and a first securing plate is disposed within the containment region and mounted to the inner seal member. A first flexibly rigid, hollow support sleeve extends outwardly from the inner seal member, and a mechanism releasably attaches the first hollow support sleeve to the conduit. An outer seal member is disposed outside of the containment region, and a second securing plate is disposed outside of the containment region and mounted to the outer seal member.

Abstract: In a bulkhead penetrator comprising a housing, a first grommet plate having peripheral recesses therein and adapted to be received by the housing, a grommet for disposition adjacent the first grommet plate in the housing and having bores therein alignable with the recesses, a second grommet plate for disposition adjacent the grommet in the housing and having peripheral recesses alignable with the bores of the grommet, and a retaining ring for connection to the housing to lock the second grommet plate, the grommet, and the first grommet plate in the housing with the second grommet plate recesses and the grommet bores and the first grommet plate recesses being adapted to receive and retain cables extending from outside the bulkhead, through the penetrator, and into a compartment defined in part by the bulkhead, an improvement wherein the retaining ring comprises a plurality of discrete sections, each of the sections being mountable on the housing, and the grommet comprises a plurality of discrete portions, each

Abstract: A seal system for sealing between a pair of members is provided wherein a pair of substantially aligned walls on inner faces of the members have internal frustoconical portions. A metal ring includes a pair of lips with external frustoconical portions which sealingly engage the internal frustoconical portions. The metal ring includes at least one convolution between the lips. The convolution permits axial extension of the metal ring upon application of external pressure to the ring.

Abstract: Apparatus including an elastomeric gasket and a rigid holder therefor for resiliently connecting a sewer pipe in the wall opening of a concrete manhold to prevent leakage through the connection under extreme conditions of ground settling and overhead loading. The base of the gasket is anchored in the opening with its interior surface in flush alignment with diverging surfaces of the wall opening and having an inside diameter substantially corresponding to the outside diameter of the pipe for a press fit. The holder is preassembled with the gasket for casting of a port in a wall in situ.

Abstract: A grommet includes a hollow cylindrical body that is positionable in a bore hole of a transmission case and into which an oil fill tube can be advanced, to thereby establish a seal between the tube and case. The grommet defines an open top end, and a scored membrane is formed integrally with the body to cover the top end. Consequently, the grommet can be positioned in the bore hole to cover the bore hole prior to engaging the oil fill tube with the bore hole, thereby permitting pressure testing of the transmission case and preventing contaminants from entering the case. The oil fill tube can then be advanced through the membrane and into the bore hole.

Abstract: A device is positioned for passing a lengthy object through an opening in a wall to which a flat plate made of a stable material is attached. The plate has a hole that corresponds to and is aligned with the opening. A one-piece rubber sleeve that surrounds the lengthy object is provided for its moisture-proof insertion, and has a lengthwise separation which can be closed. A circumferential groove is provided on the inside of the rubber sleeve and is designed to lay against the lengthy object; this groove contains a ring-shaped insert made of a flexible material. In addition, the rubber sleeve has an outwardly open circumferential recess at one outer axial end, to seal the edge that limits the hole in the plate.

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 spa fixture assembly includes a resilient grommet, a fixture body (e.g., a jet valve body), and a fixture cartridge (e.g., a combined jet valve and cover). The grommet has a body having an inner surface and an outer surface and a lip, with the inner surface preferably tapering away from the lip. The fixture body has a water entry port, an air conduit, a lip, and a threaded insert holder. The fixture cartridge includes a body having external threads, a front peripheral cover, and an insert (e.g., a jet valve). The grommet is inserted from either the front or back of a tub through a hole drilled in a tub wall until the lip of the grommet seats flush with the tub wall. The fixture body is inserted through the grommet (towards the tapered end of the grommet) from the back of tub until the lip of the fixture body seats against the lip of the grommet and is thereby interference fit within the grommet. The fixture cartridge is thread into the fixture body from the front of tub (i.e.

Abstract: A seal for a constant velocity joint, the seal comprising a main seal body having a central axis of rotation, the main seal body including an inner wall and an outer wall and opposing first and second sides, a raised rib extending out from the first side, the raised rib being axially deformable in such a manner as to create an axial force parallel to the axis of rotation for reducing the axial slip between a constant velocity joint a transmission output component, a flange seal portion extending out away from the outer wall, the flange seal portion having an inner contacting surface for contacting the constant velocity joint and defining a protective seal between the constant velocity joint and the transmission output component and a rigid coupling member connected to the main seal body having an inner wall portion for contacting the transmission output component whereby the rigid coupling member supports the main seal body and connects the seal to the transmission output component.

Abstract: Methods for sealing cracks adjacent stub tube attachment welds in a reactor pressure vessel of a nuclear reactor are described. The reactor pressure vessel includes at least one stub tube through which a control rod housing extends. The control rod housing is attached to one end of the stub tube with an upper stub tube attachment weld. In one embodiment, a sidewall of a control rod drive housing is cut at a location below the upper stub tube attachment weld to form a weld passage in the control rod drive housing between the control rod drive housing and the stub tube. A weld is then formed in the weld passage so that it is in physical contact with both the stub tube and the control rod housing, and thus seals the control rod drive housing against the stub tube.

Abstract: A sealing apparatus for sealing an end of an enclosure having an opening for passing an elongate object, such as a cable, therethrough is disclosed. The sealing apparatus includes a sealing device with a port through the sealing device. The sealing device is configured so as to be placed within an end of the enclosure and in sealing engagement with an inner surface of the enclosure. An adaptor is further disclosed which is configured to be inserted within the port of the sealing device. An opening is provided in the adaptor for receiving the elongate object to be passed into the enclosure. The adaptor further includes a first compressing part and a second compressing part longitudinally offset from the first compressing part with a sealant disposed between the compressing parts. A driver in the sealing device is operatively connected to the compressing parts to position the compressing parts in longitudinally movable positions relative to each other.

Abstract: An expandable band and locking mechanism is used to install and secure a flexible sealing element, such as a rubber seal or gasket, against an internal annular surface, such as in a manhole or pipe. The expandable band is capable of expanding and being locked at various diameters. The expandable band preferably has a plurality of deviations or ribs that provide a plurality of pressure points against the sealing element. The expandable band includes a first locking region, such as an end locking portion of the band, and a second locking region, such as one or more adjustable locking elements or notches in the band. The locking mechanism preferably includes a locking member having a first locking tab for engaging with the end locking portion of the band and a second locking tab for engaging with one of the adjustable locking elements or notches in the band. The locking mechanism further includes a housing for covering the locking member and engaging the band.