Abstract: A gasket defining a service opening of a bolt hole. The bolt hole has one or more spaced beams which engage and grip a bolt and which resist removal of the bolt. Each beam is spaced inwardly of the outer wall of the bolt hole and will flex along its length without fracturing. The beams may be cantilever beams or may be connected at both ends of the beam to the wall of the bolt hole. The beams are long and narrow and are at least four times as long as they are wide.

Abstract: The invention comprises a sealing grommet having a body made of an elastomeric material. The body has two halves to be assembled together in a sealing arrangement. The halves have a cable receiving opening extending therethrough from one side to another side. The opening has an outer diameter with a series of pliable webs extending inwardly into the opening to form a cable receiving channel. The webs in a center of the halves are larger and extend further into the opening than the webs along the sides of the halves thereby making the channel narrower in the center of the halves than along the sides of the halves to enable a sealing relationship to be formed about a variety of cable sizes.

Abstract: A slide ring unit includes a slide ring having first and second opposite axial ends. The slide ring further has a sealing face at the first axial end and a conical circumferential surface for supporting an elastic rolling body thereon. The circumferential surface tapers from the sealing face toward the second axial end. The slide ring unit further has a stop for axially retaining the rolling body on the circumferential surface of the slide ring. The stop forms a component separate from the slide ring and adjoins the slide ring at the second axial end thereof. The stop has an outer circumferential surface terminating at and flush with the conical circumferential surface of the slide ring at the second axial end thereof. Further, a securing arrangement is provided for attaching the stop to the slide ring.

Abstract: An annular seal for chromatography columns adapted for radial sealing with an inner cylindrical surface, having a compressive surface disposed on the inner annular edge of the seal, and a sealing surface disposed on the outer annular edge of the seal, whereas the sealing face is substantially planar and has two parallel edges, which sealing face further comprises at least one release ridge disposed on the sealing surface adjacent to each parallel edge, which release ridge aids in ensuring breaking of the seal between the sealing face and the inner cylindrical surface.

Abstract: A sealing structure for cylinder heads is disclosed. The sealing structure has a bead placing means which is provided in the junction between the cylinder head and block. The bead of a gasket is placed in the bead placing means, so that the ridge of the bead is not excessively compressed but is brought into linear contact with the bead placing means. The bead thus maintains its elasticity for a lengthy period of time, thereby sealing the junction irrespective of highly-pressurized combustion gases and preventing leakage of coolant and engine oil through the junction. The sealing structure also reduces the amount of mixed gas filling in the junction, thus improving the mileage of a vehicle. The sealing structure almost completely restricts the exhaust of unburnt mixed gases during an exhaust stroke of an engine, thus allowing the engine to be less likely to cause environmental pollution.

Abstract: A sealing gasket (9, FIG. 1 ) has a spiral wound element 10 secured to a surrounding locating plate 11 which is thinner than usual locating rings and may include bolt apertures 23.sub.1 etc. The plate 11 has a central aperture 22 which is surrounded by simple embossment 26 inclined to the longitudinal axis at an angle corresponding to the inclination of the ridge 21 presented by the outer turn of the spiral wound element. The aperture 22 receives the sealing face 18 of the element thereby and overlies the ridge 21 to which it is spot welded at a plurality of points. The plate has some resilience permitting the spiral wound element to compress properly under load, but being simple to fabricate and assemble.

Abstract: A shaft seal includes a plurality of axially spaced annular sealing rings which define oil collection channels. A radial drain aperture extends from the bottom of each channel into an interior trough which extends axially to a discharge orifice in a front end wall of the seal. The bottom of the trough is downwardly inclined for enhanced gravity flow. A portion of the outer periphery of the seal which projects into the housing is outwardly flared and includes a lower discharge lip to provide a return flow surface which directs return flow of sprayed oil away from the seal.

Abstract: An adjustable seal assembly for maintaining a fluid tight seal in a vacuum vessel is provided. The disclosed adjustable seal assembly is particularly suited for sealing a vessel that includes two concentrically disposed sections having a small gap therebetween such that the vessel accommodates relative axial motion between the chamber section and the closure section. The disclosed adjustable seal assembly is comprised of a thin, fiber reinforced polymeric membrane having a first edge attached to a surface of one section of the vessel along the entire perimeter thereof and a second edge attached to a surface of the other section of the vessel thereby sealing the gap between the sections of the vessel. The body of the thin membrane is further disposed such that it generally forms an axially adjustable loop configuration within the small gap allowing the two sections of the vessel to move without breaking the seal.

Abstract: A spiral wound gasket for sealing between sections of pipe and which includes means for preventing buckling of the spiral winding during compression. The gasket includes a solid outer guide ring for limiting compression of the gasket and positioning the gasket in the pipe. The spiral winding is constructed of a metal band interspersed with a sealant material. The outer diameter of the spiral winding is less than the inner winding of the guide ring creating a gap therebetween. In order to bridge the gap to maintain connection between the winding and guide ring, an outer section of winding is looped to engage the guide ring. These loops biasingly bridge the gap allowing radially outward expansion of the winding as the gasket is sealingly compressed thereby preventing buckling of the spiral winding.

Abstract: A metal-to-metal seal assembly which provides a dynamic seal between two moving members yet does not require constant compressive loading. A hollow seal ring is provided having a "C"-shaped cross section and containing a coiled spring. The seal ring is disposed between two telescoped members of an expansion joint, or polished bore receptacle, in an interference fit and is flanked by two bearing rings. The seal ring is located relative to the pressurized fluid so that the fluid pressure is equalized across the ring and remains constant between the two telescoped members despite relative movement therebetween.

Abstract: In a sealing device, a crank-shaped oil channel is defined in an abutment of a sealing ring for sealing between a shaft member and a housing which surrounds the shaft member and is rotatable relative the shaft member. The crank-shaped oil channel is comprised of a first oil channel portion and a second oil channel portion which extend axially, and a third oil channel portion which connects the first and second oil channel portions to each other. If the sealing ring is thermally expanded circumferentially due to a change in temperature, the sectional area of the flow path in each of the first and second oil channel portions is varied, but the sectional area of the flow path in the third oil channel portion is not substantially varied. Therefore, it is possible to leak a given amount of an oil from one side of the sealing ring through the crank-shaped oil channel to the other side, thereby preventing the wearing of the shaft member caused by foreign matter, such as an iron powder, contained in the oil.

Abstract: A seal device for a Lysholm compressor has a carbon seal ring and a metal maintaining ring arranged peripherally of a shaft of a male or female rotor, the seal ring being pressed against the maintaining ring to achieve sealing. Square root of a sum of square of surface roughness of the seal ring and square of surface roughness of the maintaining ring is in the range of 0.8 to 2.5 Z, which prevents occurrence of blisters on a surface of the seal ring and leaked oil amount can be within the leakage permissible level.

Abstract: A mixer seal assembly for a closable vessel having a dynamic mixer shaft seal in a bore in a vessel flange and a static seal for vessel transport formable by insertion of a disconnected lower portion of a fast connect coupling which is fast to install on the mixer shaft into the flange bore above the dynamic seal. The resulting seal assembly can seal the vessel for over-the-road transport. The dynamic seal includes a circular lip which sealingly engages the surface of the mixer shaft. The static seal includes an O-ring disposed in a first annular groove in the coupling portion. A shaft bushing disposed adjacent to the shaft seal in the flange bore minimizes shaft runout in the shaft seal and permits use of relatively rigid and dry running materials such as fluorocarbon polymer in the shaft seal.

Abstract: A vacuum/pressure seal method and apparatus including a closure for a vacuum/pressure chamber which includes the use of a flexible fin between the chamber and a closure member, which fin depends angularly toward the direction of greater pressure between a chamber opening surface and a closure member surface.

Abstract: Slinger seal assembly for sealing an annular space between two relatively rotatable members, i.e., an inner member, such as a rotatable shaft, and an outer member, such as a stationary housing. The slinger seal assembly shown and described includes a first rigid metallic outer case member which is frictionally supported on the housing and which extending inwardly toward the shaft, and an elastomeric shaft seal supported on the inner end of this outer case member. The slinger seal assembly of this invention also includes a slinger, which is frictionally supported on a shaft member, in this case a flange at the outer end of the shaft and rotatable with the shaft, for securing a further shaft.

Abstract: A combined oil ring comprises an oil ring and a coil expander. A curved bar passes through paired end portions of the coil expander. An antirotation member comprises a portion to be inserted into a hole and a portion to be held. Two mutually parallel surfaces of the portion to be held are held between paired end surfaces of the coil expander while the portion to be inserted into a hole is inserted into an antirotation member securing hole formed at the bottom surface of an oil ring groove of a piston. The curved bar passes through a curved bar insertion hole formed in the portion of the antirotation member to be held.

Abstract: A rubber elastic sealing ring 13 is arranged between two concentric machine parts 11, 12 moved towards each other. The sealing ring 13 has a surface 22 that on the one hand ends in a dynamic sealing edge 21 and on the other hand extends to the low pressure side N. In addition, an outer peripheral surface 25 of the sealing ring 13 is inclined towards the bottom 18 of the groove in the non-compressed state of the sealing ring 13. Imaginary planes 35, 36 extend through the ring-shaped conical surfaces 22, 25. The imaginary planes 35, 36 are also conical ring-shaped surfaces that form an intersection line 37. The intersection line 37 is always located between one plane 34 (ring-shaped surface) and the peripheral surface 15 of the second machine part 12.

Abstract: A unitized oil seal (10) includes a wear sleeve element (12) and a seal element (14). The wear sleeve element (12) is configured to include an axially outwardly and radially inwardly tapered dust sealing surface (38). The seal element (14) is provided with a dust sealing lip (82) sealingly engaging the dust sealing surface (38). The dust sealing lip (82) is configured to flare out axially outwardly and radially outwardly so that the point of contact thereof with the dust sealing surface (38) is offset axially outwardly from the plane of an abutment surface (40) of the wear sleeve element. A high degree of dirt exclusion capability is achieved. The seal element (14) includes primary and auxiliary seal lips (74, 76) which are brought into sealing engagement with the wear sleeve without a conventional garter spring.

Abstract: An annular constant radial load ring is adapted to be received in an end portion of a dust boot for use with a ball and socket assembly. The ring includes an annular central body with a plurality of generally Y-shaped fingers circumferentially spaced about an inner periphery of the central body. The fingers are biased radially outwardly to promote sealing engagement between the dust boot and its mating component.

Abstract: A radial shaft seal comprises a gasket and an anti-dust lip made of polymer and resting axially separated against the shaft with concentric sealing edges around it. The anti-dust lip has at least two sealing edges separated by a gap. Each edge is interrupted by at least one groove that opens toward the shaft at points distributed around the seal circumference.