Abstract: The present invention is directed to a valve seal assembly for use in multi-chamber vacuum devices. The seal assembly comprises a door and a deformable seal ring running along the periphery of the door, wherein the seal ring is held in place by a reversibly mounted securing means such as a disk, ring or clamp.

Abstract: An annular metal-to-metal sealing system comprises at least one metal member defining an annular sealing surface and an annular seal body which is comprised of a high strength metal material and which is positioned substantially concentrically relative to the annular sealing surface. The seal body has at least one flexible portion which is flexed during assembly to develop a seal activating force, and the metal-to-metal sealing system further comprises at least one annular soft metal sealing insert which is supported by the flexible portion and which is maintained in sealing engagement with the annular sealing surface by the seal activating force.

Abstract: A sealing ring for a shaft (3), characterized by a sealing lip (1) made of an elastomer material is flexionally dimensioned with a flexional elasticity which is sufficient for pressing a sealing section (10) of the sealing lip (1) against the surface of the shaft (3). The sealing section (11) of the sealing lip (1) is disposed with a cylindrical part of a given length (L) on the periphery of the shaft (3). The sealing lip (1) is provided with a thread (5) at least along the above-mentioned length on the shaft side, whereby a discharged medium is transported back to the sealing area (M) when the shaft (3) is rotated. By dimensioning accordingly, it is possible to dispense with an additional spring for pressing a sealing lip (1) against the shaft (3). The thread (5) is also sealed off from the surrounding area (U) in order to prevent the medium to be sealed from flowing out when the shaft (3) is not in operation.

Abstract: A package comprising gasket mounting clamps and instructions for mounting same. The mounting clamps include an expansion clamp and a takedown clamp. The expansion clamp engages an interior of a gasket inserted. The takedown clamp is looped in the gasket. The takedown clamp is urged against surface of either the expansion clamp or the gasket. A flexible fastener loops through the expansion clamp and around the takedown clamp passing through an opening in an instruction card retaining the card and takedown clamp within the gasket. The expansion clamp enables installation of gasket and expansion of the clamp without removing the fastener and without interference of the takedown clamp, fastener and card and permits observation of the card. The fastener loops through the expansion clamp and does not interfere with the expansion operation. The fastener remains intact until mounting a pipe to the gasket, assuring retention of the takedown clamp and instructions.

Abstract: A seal structure (10) has a flange (12) which locates against the flange of another member (22) and is held there by a “U” shaped clip (32). Member (22) has one or more cut outs (30) in its flange, and clip (32) has a corresponding number of tags (34) formed in one leg of its “U” shape. The or each tag (34) is bent inwards. On assembly, the flange of member (22) is placed against flange (12) and clip (32) is pushed over the sub assembly until the tag(s) (34) locate in a respective cut out (30). The need for drilling holes and riveting or bolting the assembly together is thus obviated.

Abstract: A cylinder head gasket includes a main gasket body having at least one cylinder opening, a wire sealing ring, and a metal armoring ensheathing the wire sealing ring. The metal armoring has a first annular flange portion extending beyond the cylinder opening in overlying relation to a first main surface of the main gasket body, a second flange portion opposite the first flange portion having a size no greater than that of the cylinder opening, and a curved portion joining the first and second flange portions. The cylinder opening is notched to receive lock tabs of the second flange portion through the main body, after which the metal armoring is rotated to offset the lock tabs from the notches to lock the armoring and sealing ring within the cylinder opening.

Abstract: A high-pressure pumping system including an energizing seal component having an aperture extending therethrough and a seal jacket component having a base and a toroidally-shaped flared membrane extending from the base. The body and the flared membrane are monolithically formed of an inert polymeric seal material. The flared membrane extends through the aperture and encircles the energizing seal component to isolate the energizing seal component from fluid of the pumping system. The flared membrane may extend axially from the body and encircle the energizing seal component. The flared membrane may encircle the energizing seal component and overlaps a portion of the base. The seal jacket component may be formed around the energizing seal component. The seal jacket component may include a flange extending radially outwardly from the base.

Abstract: In order to provide a gasket which can be repeatedly used over a temperature range in which a rubber gasket cannot be used, which does not have any risk of damaging a flange, and which can follow the change of the distance between flanges, a gasket is constructed in such a way that two metallic coned disc springs each of which has a circulation opening for a fluid in a central portion and each of which is formed into a seal surface in which an outer peripheral portion with respect to the circulation opening rises having an arc-like curved surface are combined while being oppositely directed and have outer diameter peripheral edge portions which are welded and fixed so that by tightening flanges, repulsive force of the two coned disc springs concentratedly affects the seal surfaces consisting of the arc-like curved surfaces, and a tight fluid seal is formed between the flange surfaces.

Abstract: A sealing arrangement for sealing a housing with respect to a shaft includes a first annular supporting element connected to the housing, a second annular supporting element connected to the shaft, and a first seal connected to one of the two supporting elements and in abradant contact with the other supporting element. To improve the sealing function of the sealing arrangement, the supporting element to which the first seal is not connected is provided with a second seal which runs frictionally on the machine part to which the first supporting element is connected.

Abstract: An annular-shaped metal gasket, which can reduce a tightening force necessary to a seal and easily manage the manufacturability and the characteristics thereof, the metal gasket, in an annular-shaped metal gasket having a cross section provided with an outer circumferential opening and formed in one of a laterally U-shape, voids are formed to the innermost circumferential portions on the two confronting flat sealing surfaces of the metal gasket that are in contact with opponent surfaces, each void having a width equal to or more than 40% of the central wall thickness t0 of a bight section and a height equal to or more than 5% of the height H of the gasket, wherein the cross section of the gasket is formed in a tuning-fork shape. A tightening force necessary to the seal can be reduced by forming the cross section of the metal gasket in the tuning-fork shape and providing the voids with the surfaces of the metal gasket in contact with the opponent surfaces.

Abstract: The invention relates to a shaped seal for sealing a power-operated closing device comprising a jam-protection zone, which has at least two electrically conductive areas, situated at a distance from each other. According to the invention, to save space and reduce weight and cost, the carrier is used as a metallic conductor for the conductive area so as to reduce volume resistance. Alternatively or in addition thereto, a frame can be used to which the shaped seal can be fixed.

Abstract: A bolt retainer mechanism in one layer of a multiple-layered steel (MLS) gasket, includes an aperture defining a radially inwardly extending tabs. In one embodiment, each tab is formed to define an inverted U-shaped tang positioned adjacent to, and in symmetrical registration with though axially spaced from, an associated mated aperture formed in a second layer of at least a two-layer gasket. Collectively, the plurality of tangs defines a circumscribed diameter slightly smaller than the diameter of the associated mated aperture, to assure retention of a bolt supported through the mated apertures for pre-assembly shipment. Preferably, the tangs in association with each of the mated apertures are formed of a spring metal adapted to provide radially inwardly directed forces against threaded shanks of associated bolts. To enhance effectiveness of bolt retention, the bolt-contacting portion of each U-shaped tab has an axial length greater than the axial thickness of the apertures.

Abstract: An arrangement for sealing an opening of a rotor housing in which a vacuum prevails, through which opening a shaft of a spinning rotor, supported outside of the rotor housing, projects. The arrangement has free floating sealing element arranged towards the opening and forming at least two sealing gaps with the spinning rotor. A first sealing gap is located between the sealing element and the shaft, a second sealing gap is located between the sealing element and a collar of the spinning rotor which borders the shaft. The sealing element can form an additional third sealing element with the back wall of the spinning rotor.

Abstract: A shaft sealing assembly seals a rotary shaft of a refrigerant compressor with a first sealing member, which is a lip seal. The first sealing member has a hollow portion. As the pressure in the interior space of the compressor housing increases, an outer wall surrounding the hollow portion is elastically deformed. Accordingly, a lip portion of the first sealing member receives a tension that weakens a force pressing the lip portion against the rotary shaft. Therefore, the sealing assembly improves the durability of the lip portion and maintains a satisfactory property of the lip portion to follow displacement of the rotary shaft at the same time.

Abstract: A strip brush seal device for improving a seal capability of a seal portion, promoting an elastic deformation of the seal portion, and preventing wear of the seal portion. Also for providing a secure joint to a mounting portion of the strip seal brush. The strip brush seal comprises a mounting portion which is located toward the side of protrusions of individual seal strips in which the protrusions of the seal strips are integrally joined along a direction of width of the strip, a strip brush seal which retains a seal portion to the radially inward direction relative to the mounting portion, a back plate which is disposed in the opposite side of the action of a process fluid, and a joint portion which is formed by welding the individual protrusions of the seal strips.

Abstract: An improved turbine spring clip seal for directing gases to be mixed with fuel in a combustor basket. The turbine clip seal may include an inner housing and an outer housing. The inner housing or the outer housing, or both, may include one or more tapered leaves forming a portion of the spring clip seal. At least one leaf may include a flared end for limiting gas from passing through the slots in the spring clip seal. In at least one embodiment, the turbine clip seal may include a center sealing member positioned between the inner and outer housings.

Abstract: A sealing device for use with a drive shaft of a water vessel. The sealing device comprises a housing for a seal and bearing, a compression ring, a lip seal flange attachment and a diaphragm for tracking the movement of the shaft. The diaphragm is made of a resilient, flexible material and is operatively connected to the seal housing. In operation, the diaphragm tracks the motion of the drive shaft so that the drive shaft may move freely in the hull of the vessel. The diaphragm allows the rigid seal housing to also move in response to any axial, lateral or circular-axial (wobble-like) movement of the shaft so that a constant seal around the shaft is provided.

Abstract: A C-section ring fixed on a steel-mill roll and coaxially surrounding its stub has inner and outer axially extending legs defining an axially open cavity. The inner leg is tapered away from the roll and is formed adjacent the free end with a radially outwardly open annular groove. An annular cover part fixed on a stationary support, engaged in the cavity, forming a drain compartment open axially away from the roll, and formed with a radially outwardly open catchment groove radially aligned with a free end of the inner leg is also formed with a passage extending from the catchment groove to the drain compartment. An annular extension on the cover part has an inner surface carrying a seal ring that bears radially inward on the stub. An add-on part on the extension forms with the extension, with the cover part, and with the C-section ring a labyrinth.

Abstract: A shaft sealing ring for a shaft comprises a sealing lip made of an elastomeric material or a PTFE compound and dimensioned as to be flaccidly bendable. The flexural elasticity is selected such that it will just be sufficient to press a sealing portion of the sealing lip into sealing engagement with the periphery of the shaft. The sealing portion of the sealing lip engages the periphery for a predetermined length. In the sealing portion, the sealing lip is provided along its circumference, at the side of the shaft, with endless, undulating return channels at least throughout this length. These channels return any medium escaping during rotation of the shaft to the space to be sealed. The return channels do not communicate with the surroundings of the shaft sealing ring. No seperate contact pressure means, such as a helical ring coil spring is required to press the sealing lip into engagement with the shaft.

Abstract: The present invention relates to a seal system for use in rotary machines. The seal system includes a first member and a second member forming an annulus, a high pressure region and a low pressure region in the annulus, and a liquid seal intermediate the first and second members and intermediate the high pressure region and the low pressure region for reducing gas leakage from the high pressure region to the low pressure region.