Abstract: A handheld electric tightening tool includes a housing and a sealing arrangement. The sealing arrangement is adapted to seal a first portion of the housing from a second portion of the housing and includes a sealing element and a spring. The sealing element includes a first portion adapted to bear against a shoulder formed in the housing, and a second portion adapted to bear against a portion of an outer surface of a rotating axle of the tool. The spring is adapted to at a first end bear against a shoulder formed in the sealing element and at a second end bear against a supporting element arranged on the axle, such that a force is exerted on the sealing element urging the sealing element against the shoulder formed in the housing.

Abstract: A rolling-element bearing includes a first bearing ring, a second bearing ring, and a seal unit formed in a multiple-piece manner, the seal unit including an at least part-ring shaped main element which is freely rotatable with respect to the first bearing ring and the second bearing ring and at least one seal lip. In addition, the main element and the seal lip are exchangeably connectable to each other.

Abstract: A stack ring is formed by an outer ring and an inner ring and is inserted in an annular gap formed between an inlet sleeve and an inner casing. The outer periphery of the outer ring and the inner periphery of the inner ring each have a land part having a flat face and taper faces formed on upper and lower sides of the land part. A ratio of L1 to L0 is 0.3 to 0.7 where L1 is a length of the land part and L0 is a total length in the up-down direction. A ratio of S to S0 is not less than 0.95 where S is an area of the cross sectional shape of the outer ring or the inner ring and S0 is an area of a virtual rectangle BCDE and the taper faces have an inclined angle of 1° to 10°.

Abstract: The invention relates to a support ring arrangement for a high-pressure seal which is provided, along with said support ring arrangement, for an axially slidable or pivotable container closure ( ) mounted in a cylindrical section of a high-pressure container, said high-pressure seal radially sealing the cylindrical section of the high pressure container with the aid of said support ring arrangement, and a maximum pressure of up to 10,000 bar being exerted, by means of a fluid, onto said support ring arrangement and high-pressure seal.

Abstract: A rotary union includes a rotating seal carrier having a rotating seal member connected thereon, and a non-rotating seal carrier having a non-rotating seal member connected thereon. A piston portion of the non-rotating seal carrier has a flow restrictor ring disposed thereon, and both are slidably and sealably disposed within a piston bore formed in a housing. A gap is formed between an outer diameter of the flow restrictor ring and an inner diameter of the piston bore. The enlarged diameter of the piston portion provides a net pneumatic or hydraulic surface that can be acted upon by a fluid at a positive or negative atmospheric pressure present within the piston bore of the housing.

Abstract: A sealing ring, in particular for a hydraulic piston pump, for sealing a pressure chamber which is filled with a fluid is disclosed. A sealing lip having a contour contacts a sealing surface and is movable relative thereto. The contour of the sealing lip is adapted according to the speed of the sealing lip relative to the sealing surface, such that a defined leakage of the fluid out of the pressure chamber is adjusted.

Abstract: The present invention provides a vehicle valve stem seal having both durability and sliding properties at an extremely high level in addition to usual sealing performance. The present invention is a vehicle valve stem seal comprising an elastic member with a seal lip portion on an end of a valve stem guide, the seal lip portion slidably closely contacting with a valve stem of an engine, wherein the elastic member is formed of a composition containing a fluororubber and a fluororesin and has projecting portions at least on a surface of the seal lip portion, the projecting portions being substantially formed of the fluororesin contained in the composition, the fluororesin is a copolymer including a polymerization unit derived from ethylene and a polymerization unit derived from tetrafluoroethylene, and the fluororubber is a polymer including a polymerization unit derived from vinylidene fluoride.

Abstract: A fluid machine has a housing and a rotating portion that rotates relative to and is at least partially disposed within the housing. The housing is coupled to a seal assembly comprising a plurality of seal channels having a plurality of seal rings. Each of the plurality of seal channels comprises a respective one of the plurality of seal rings.

Abstract: A shaft seal device includes: a rotary shaft; a seal member that is arranged on an outer periphery of the rotary shaft; a liquid chamber; and a seal member accommodation chamber that accommodates the seal member therein, wherein the liquid chamber and the seal member accommodation chamber is separated by a partition wall, wherein the rotary shaft passes through a shaft hole formed in the partition wall and an outer periphery of the rotary shaft is sealed by the seal member, wherein the partition wall is formed with a through-hole penetrating the partition wall, a hollow member is mounted in the through-hole, a protrusion part of the hollow member protrudes toward the seal member accommodation chamber to engage with the seal member, and wherein the liquid chamber and the seal member accommodation chamber communicate with each other through a hole of the hollow member.

Abstract: A seal for a vessel is disclosed which militates against a leakage of fluid during expansion and contraction of the vessel due to changes pressure and temperature. Inner sealing surfaces of the seal form substantially fluid-tight seals in response to at least one of temperatures below a predetermined temperature and pressures below a predetermined pressure and outer sealing surfaces of the seal form substantially fluid-tight seals in response to at least one of temperatures above the predetermined temperature and pressures above the predetermined pressure.

Abstract: A device for sealing between a first component and a second component is disclosed. The first component has a groove and the groove has a first wall and a second wall. The annular body includes a first side configured to selectively contact the first wall of the groove, a second side opposite the first side configured to selectively contact the second wall of the groove, a first surface in contact with the second component, and a second surface opposite the first surface. A lip is bonded to the second surface and extends at least partially around the second surface of the annular body. A pressure acting on the first side of the annular body forces the second side to contact the second wall of the groove, and a pressure acting on the second side of the annular body forces the first side to contact the first wall of the groove.

Abstract: A bushing-like part made from a fluoropolymer and circumferentially oriented continuous high tensile modulus fibers is useful as a part for pumps and compressors and other similar types of apparatus. These parts may be useful at high temperatures and/or very corrosive environments, often lengthen the time between required maintenance checks, and usually perform better than metal bushings under nonstandard operating conditions.

Abstract: The invention contemplates a rack bushing and a rack and pinion steering assembly for use in a vehicle that includes such a rack bushing. The steering assembly may include a housing having a tubular rack portion with a tubular end, a rack mounted in the tubular rack portion and extending out of the tubular end, and a rack bushing mounted in the rack portion around the rack. The rack bushing includes a generally annular main body portion having a generally cylindrical inner surface centered about the axis and supporting the rack, an outer surface centered about the axis and including a generally cylindrical main surface adapted to engage the tubular end of the housing, and a first end and an opposed second end. The rack bushing may include a plurality of bores extending within the main body axially from the first end a portion of the way toward the second end.

Abstract: A hub unit including a hub and a flange integrally formed with the hub, and a seal including a core metal and an elastic body integrally molded with the core metal. The elastic body includes one or more lips in sliding contact with one or both of the hub and the flange. The elastic body includes a molded rubber, wherein the molded rubber contains, as a raw rubber, acrylonitrile/butadiene rubber having an acrylonitrile monomer content of from 26 to 36% by weight. In a first embodiment, the hub unit includes a hub adapted for receiving a shaft and a flange integrally formed with the hub, and the seal is attached to an outer circumference of the hub unit. In a second embodiment, the hub unit includes an inner ring having a raceway surface for receiving rolling elements and an outer ring. The seal seals the space between the inner ring and the outer ring. Furthermore, the seal includes a radial lip in sliding contact with an outer circumferential surface of the hub.

Abstract: A seal for a reciprocating plunger is formed of a hard polyimide plastic, rather than the relatively soft elastomers of earlier seals. The present seal has a conical section, with the tapered face fitting closely within the mating conical face of a hard metal retainer. An O-ring resides in a groove within the seal to provide low pressure sealing between the plastic seal and the metal retainer. The tapers of the seal and retainer urge the seal inwardly toward the plunger by operational pressures, thereby providing a better seal. The present seal provides greatly extended life over softer prior art seals, and will generally last for the life of the pump or other mechanism in which it is installed. Yet, the plastic material allows some flow under high pressures, allowing the seal to conform closely to the plunger surface during operation and throughout the life of the seal.

Abstract: A composite elastomeric seal for sealing fluid line members is provided. The composite seal comprises an outer U-shaped seal body and an inner elastomeric portion. The U-shaped seal body comprises inner and outer extending arms, each arm having a shaped contour and two protruding lip portions. One set of lips of the outer seal wraps around the inner elastomeric portion, and the other set of lips provides an auxiliary seal for sealing the fluid line members together. The invention further includes sealing assemblies that employ the composite seals.

Abstract: A compliant foil seal comprising at least one smooth resilient foil for facing a rotor and at least one bump foil for providing film riding stiffness and controlled deformation of the smooth resilient foil for providing an effective seal which is capable of operating reliably in the presence of large rotor excursions.

Abstract: A seal assembly to be inserted between two members in relative rotation, including a bushing that is fitted to the first member and is connected with a gasket, wherein both connections form fluid-tight seals. The gasket includes a rigid reinforcement that is fitted via a fluid-tight seal to the second member and a first sealing member, which is made of an elastomeric material and provided with a first annular lip. The first annular lip contacts the sleeve-type coupling portion of the bushing, which is mounted coaxially with the first lip. The portion of the reinforcement facing the bushing is provided with a seat in which a rigid ring made of an oxidation-resistant material is mounted. The rigid ring extends in front of the flange portion of the bushing, which carries a second sealing member made of an elastomeric material. The sealing member is provided with two axially extending lips which axially and radially contact portions of the ring.

Abstract: An improved rotary shaft seal assembly is disclosed herein. The seal assembly is disclosed in combination with an example of transmission components with which it may be used. The assembly provides a rotary seal for fluid flow between a stationary cylinder and a shaft which rotates within the cylinder. The shaft includes a porting groove and seal grooves on each side of the porting groove. The seal grooves each include a cast iron and a polymeric (such as Teflon®) seal which form seals between the shaft and cylinder on both sides of the porting groove.

Abstract: A unidirectional rod sealing ring adapted for forming a sealed condition in association with a member such as a piston rod or shaft axially movable in a bore of a hydraulic cylinder, the sealing ring including an elastomeric ring member having an axially facing sealing face, an opposite axially facing pressure face, a circumferential radial outer surface, and a circumferential radial inner surface, the elastomeric ring member being cooperatively receivable in an annular groove around the bore of a hydraulic cylinder with the sealing face in position in opposed relation to a first axial groove wall, and the pressure face positioned in opposed relation to an opposite second groove wall, the sealing face including at least one continuous annular bead of relatively small radial extent positioned for sealably engaging the first axial groove wall, and the radial inner surface including an inner most circumferential lip of relatively small axial extent positioned for circumferential sealed engagement with the member

Abstract: A seal assembly for a groove or seal gland in a relatively stationary machine part for sealing an axially displaceable machine part extending therethrough comprises a relatively flexible seal element supported by a relatively rigid support element. The seal element has a static seal that bears on a radial wall of the seal gland to provide superior back-pressure relief while maintaining proper seal element position in the seal gland.

Abstract: A seal assembly for providing a seal between a cylindrical member and a bore formed in a housing, the housing and cylindrical member being rotatable relative to one another, the seal assembly being located within an annular groove formed in the cylindrical member and having an annular seal body of a plastics material having an outer axially extending circumferential face for sealing abutment with the bore and at least one radially extending end face for sealing abutment with a side face of the groove and a resilient ring member located in abutment with the inner axially extending circumferential face of the seal body for urging said outer circumferential face radially outward to maintain sealing abutment between said outer circumferential face and the bore during cooling of the seal and housing, the resilient ring member having an axial end face contiguous with or located in-board of said end face of the seal body, the resilient ring and seal body being interconnected so as to be axially movable in unison wit

Abstract: A seal ring for placement in the space between a radial groove of a cylindrical member and a housing forming a bore in which the cylindrical member is movably positioned, which is free of scoring and has a fracture line through its thickness to form opposing faces. The faces are rough and mesh together such that when the faces are forced into contact, the faces are then interlocked. Furthermore, the seal ring has true roundness to enable the seal ring to seal the space despite presence of the fracture line. The seal ring is made up of a rigid polymer such as a polyimide, polyamide, polyester, polyetheretherketone, polyamideimide, polyetherimide, polyphenylene sulfide, and polybenzimidazole. The seal ring of the present invention is capable of single ring sealing of the space between the bore and the radial groove. The present invention also provides a device for fracturing the seal ring.

Abstract: A seal structure includes a stationary member, a rotatable member disposed within the stationary member to divide an interior of the stationary member into two chambers, a seal member mildly pressed to the stationary member and the rotatable member, and a recess for collecting grease, formed in the rotatable member. The seal structure can be used as a seal between a rotatable member and a stationary member of an air supply and gas exhaust switching mechanism of a regenerative combustion burner.

Abstract: A hydraulic seal system includes a seal ring groove and a seal ring mounted in the seal ring groove. The seal ring and seal ring groove are rotatable relative to each other, and have sealing sides, respectively, which are put into pressure contact with each other by a sealing hydraulic pressure. The seal ring is made of a synthetic resin to have a fixed elasticity. The sealing side of the seal ring is formed into a convex curved surface with its radially central portion raised, so that when a hydraulic pressure is applied, the sealing side can be compressedly deformed to define a hydraulic pocket. Thus, the formation and retaining of an oil film at the pressure contact portions of the sealing sides is promoted.

Abstract: In the manufacture of a seal ring having a cut portion at one position on the circumference by injecting a molten molding material from a gate into a cavity of a forming die, the gate is provided at a position apart from the opposite position to the cut portion of the seal ring. In the case of a seal ring with a weld portion, the weld portion is set away from the cut portion.

Abstract: The present invention involves a seal ring for sealing an annular space between two components. The seal ring includes an annular jacket, a spring, and a cap. The jacket includes an annular cavity defined by two annular lips. The spring is disposed within the annular cavity of the jacket. The cap is disposed over the annular lips, and encapsulates the annular cavity. The spring biases the lips against the cap to thereby seal the annular cavity. Either the cap or the jacket includes a pair of annular channels, and the other includes a pair of annular projections, so that the projections and channels interfit to thereby lock together the cap and jacket. The cap and jacket are made from a polymer material, although not necessarily the same polymer material. The spring may be cantilevered, helical ribbon coil, slanted coil, or silicone filled with one or more spring elements. The lips of the jacket may have flanges to trap the spring in the annular cavity.

Abstract: A seal for preventing leakage of fluid from between a first member and a second member, the second member is capable of moving toward and away from the first member, the seal is adapted for engaged contact with the first member and the second member so as to prevent leakage of fluid between the first member and the seal and between the second member and the seal, the seal being softer than the second member such that friction between the seal and the second member wears the seal faster than the second member, the seal being adapted to retain a tight seal against the second member as long as the seal has not worn beyond a specified depth; and a conductor for placement about the second member, the conductor being attached to the seal at the specified depth so as to contact the second member when the seal has worn to the specified depth, such that the existence of electrical continuity between the conductor and the second member indicates that the seal requires replacement, the conductor is positionally associat

Abstract: An actuating slide assembly for an automatic assembly machine, wherein the slide assembly includes telescoping fluid conducting conduits interconnected between the slide body and associated end block mounted for relative reciprocal movement relative to the slide body and a sealing arrangement for effecting a fluid tight seal between the relative movable telescoping conduits and associated slide body and end block. The sealing arrangement includes a sealing cartridge and associated O rings circumscribing one of the telescoping fluid conduits intermediate the opposed ends thereof to prohibit any leakage between the relative movable telescoping conduits and the associated slide body and a second sealing arrangement connecting the outer end of a telescoping conduit to its associated end block in a manner to provide a leakproof seal therebetween.