Abstract: A cylinder head gasket assembly includes a gasket and a wire. The gasket has a first side, a second side, and a cylinder bore opening extending through the first side and the second side. The gasket has a wall on the first side. The wall extends axially along the cylinder bore opening. The gasket has a ledge extending from the wall into the cylinder bore opening at the second side. The wire is ring-shaped. The wire is on the ledge and extends along the wall. Wax adheres the wire to the ledge.

Abstract: Spring energized seal assemblies each with one or two sealing elements and a canted coil spring located in a spring cavity of the sealing element or of the two sealing elements to bias an inner flange and an outer flange of the respective spring cavity away from one another. The canted coil springs can have un-conventional coil shapes with one or more straight coil segments and/or with curved connecting ends. The coils can have dimples to provide multiple biasing points. The coils can have loops. The canted coil springs with un-conventional coil shapes can be used to improve spring loading on a sealing element.

Abstract: Various embodiments of the present disclosure provide a sealing device that includes a locking pin, (2) an insert, and (3) a grommet.

Abstract: A seal assembly includes a seal body, a spring disposed adjacent to the seal body, and a seal ring disposed adjacent to the seal body. The seal body and the seal ring can include a plastic polymer material. The seal assembly can be a subcomponent of hydraulic strut in the landing gear of an aircraft.

Abstract: A seal that enables an enclosure to be sealed and to keep an air pressure balance between an internal space within the enclosure and an external space outside the enclosure in such a way that water ingress into the enclosure is hindered in a predictable manner. This is accomplished by providing a seal having at least one small diameter tube with at least an inner surface being hydrophobic, oleophobic or omniphobic. The seal is mounted in the enclosure between the inner and outer space. To further avoid small particle contaminants to enter and go through the at least one small diameter tube, it is preferable to have a small diameter tube with curves and bends, and it will still allow an airflow through it if there is an air pressure imbalance.

Abstract: A seal comprises an annular portion having a static seal surface in contact with a first element and made of an elastomeric material. An annular lip exerts a dynamic seal in relation to a second element. A garter spring and a leaf spring cooperate to maintain the annular lip in an operating configuration abutting on a sliding surface of the second element, whilst an annular locking element holds in position the leaf spring.

Abstract: A check valve includes a first valve body having a chamber in which second and third valve bodies are located. The check valve also includes a spring-energized seal disposed in the chamber. The spring-energized seal includes a compliant seal body having an annular shape and a resilient member, such as a cantered spring or O-ring, disposed in a pocket of the seal body. The resilient member applies a force to portions of the seal body to prevent the passage of fluid from a valve inlet port to a valve outlet port unless the differential fluid exceeds the cracking pressure of the check valve.

Abstract: A dynamic seal having a contact surface providing poly(norbornene) or a derivative thereof.

Abstract: A seal comprises an annular portion having a static seal surface in contact with a first element and made of an elastomeric material. An annular lip exerts a dynamic seal in relation to a second element. A garter spring and a leaf spring cooperate to maintain the annular lip in an operating configuration abutting on a sliding surface of the second element, whilst an annular locking element holds in position the leaf spring.

Abstract: A sealing system and a method of manufacturing such a sealing system. The sealing system comprises a seal lip of two different materials that are bonded together using a polymeric material that forms strong chemical bonds with the two different materials at the same time. Further since the bonding only takes place after activation, this enables a precise physical alignment to be done before the activation.

Abstract: The present disclosure describes a corner pad for an entryway. The corner pad may have a mounting surface configured for attachment to a frame member. The corner pad may also have a sealing surface opposite from the mounting surface. At least a portion of the sealing surface corresponds with a sealing region designed to seal against a stile of a door panel. A profile of the sealing surface within the sealing region is non-linear. Thus the profile creates a varied thickness of the corner pad within the sealing region to provide varying levels of compression when sealing with the stile, and to accommodate variations in a margin between the frame member and the stile.

Abstract: A fuel injector mounting structure may employ a flat bottom, a first (e.g. exterior) vertical wall that meets flat bottom, a second (e.g. interior) vertical wall that meets flat bottom, and a top wall. The top wall may define a flat surface transitioning into a curved surface. The top wall, flat bottom, first vertical wall and second vertical wall may be in the shape of a circular ring with a center hole through the center of the ring. An engine cylinder head may contact the bottom wall and a fuel injector may contact the curved surface of the top wall. Fuel injector and flat surface of top wall may define an air gap between them to inhibit vibration transmission from the fuel injector into the cylinder head. A powder metal material or an elastomer may occupy a cavity within the circular ring.

Abstract: Disclosed is a surface-treating agent for oil seal lip portion, comprising a lubricant filler and an adduct compound consisting of an adduct of toluene diisocyanate and trimethylolpropane, the surface-treating agent being applied to the surface of vulcanized rubber forming a lip portion of an oil seal comprising the lip portion and a metal ring. The application of the surface-treating agent of the present invention to the sliding surface of a seal lip portion of an oil seal effectively lengthens the service life of the oil seal, when used in a sliding part or a moving part, and leads to energy saving of equipment that uses the oil seal.

Abstract: A securement structure is positioned inside a channel of a first medical device to facilitate securement of the first medical device to a second medical device. The first medical device may be a ligation banding cap, and the second medical device may be an endoscope. The securement structure is adapted to be compressed between the second medical device and the first medical device to secure them together. This allows parts of different sizes to fit together.

Abstract: A sealing system including a rotary sealing surface on a rotary shaft and a rotary shaft lip seal, of which the rotary sealing surface has a surface coating layer of a solid lubricant substance. The invention further includes an industrial robot having several axes of rotation, including a manipulator with drive units for rotating robot parts according to the axes of rotation of the robot, and at least one of the drive units having a rotary shaft provided with such a sealing system. In addition, the invention includes a method for providing a rotary sealing surface on a rotary shaft, including coating the intended sealing surface of the rotary shaft with a surface coating layer of a solid lubricant substance.

Abstract: A fluid seal assembly (the assembly) of the present invention is disposed between an outer surface, i.e. engine block or any other part that requires application of the assembly and a rotatable member, such as, for example a shaft, wherein the assembly circumscribes the shaft and lubricated the shaft and the same rotates around the axis. The assembly includes at least three members: a casing unit, a sealing ring unit, and a collar. The assembly eliminates problems associated with prior art designs such as static leakage of oil, clogging up the spirals with carbonized oil that negatively impact lifecycle of the fluid seals.

Abstract: A shaft seal assembly includes a metal case having a wall extending cylindrically about a central axis with an annular leg extending radially inwardly from the wall toward the central axis. An elastomeric material is bonded to the leg, and a PTFE seal element is attached to the elastomeric material at a bond joint. The bond joint is spaced radially inwardly from the leg and in radial alignment with the leg and inhibits the elastomeric material from flexing. As such, the elastomeric material is isolated or substantially isolated from impacting the performance of the PTFE seal element during use. Accordingly, the bond joint provides a reliable seal of the PTFE seal element against a running surface of a shaft or wear sleeve.

Abstract: A dynamic radial seal includes a rigid casing. The seal also includes an elastomeric casing positioned interior of and bonded to the rigid casing. The elastomeric casing has an axial spring member which extends radially inwardly from and axially along the rigid casing. The axial spring member includes a neck portion which extends from the elastomeric casing and a seal attachment portion that is attached to the neck portion and has a bonding surface. The seal also includes a pre-stressed fluoropolymer seal which has a bonding surface and a sealing surface. A bond joins the bonding surface of the pre-stressed fluoropolymer seal to the bonding surface of the seal attachment portion. The seal attachment portion of the spring member is operative to provide sealing contact of the fluoropolymer seal along the entirety of its sealing surface when engaged with a mating surface of a shaft.

Abstract: A sealing device for sealing a first side against a second side of a machine part, wherein the sealing device has a sealing element which contacts a counter element. At least a part of the sealing element and/or at least a part of the counter element is coated with a layer consisting of or containing fullerene-like carbon nitride (FL-CNx), wherein an inter-layer of chromium (Cr) or aluminum (Al) or molybdenum (Mo) or titanium (Ti) or tungsten (W) or a diamond-like coating (DLC) or a metal-mix diamond-like coating (Me-DLC) is arranged between the surface of the sealing element and the layer consisting of or containing fullerene-like carbon nitride and/or between the surface of the counter element and the layer consisting of or containing fullerene-like carbon nitride.

Abstract: A hydraulic hammer (14) may include a housing (30) having a distal end defining an opening (38), a bushing (54) positioned adjacent the housing distal end, the bushing (54) having an inner guide surface (58) and a distal end (56), and a tool (22) having a proximal section (60) slidably disposed in the bushing inner guide surface (58) and a distal section (62) projecting from the housing (30) through the opening (38). The hydraulic hammer (14) may further include a composite seal (70) having an exterior cover (72) with a proximal end (76) releasably coupled to the bushing (54) and a distal end (77) projecting from the distal end (56) of the bushing (54), the exterior cover distal end (77) defining a recess (90) opening toward the tool (22), and an interior seal (74) having a base (92) disposed in the exterior cover recess (90) and a sealing arm (94) projecting inwardly from the base (92), the sealing arm (94) being configured to sealingly engage the tool (22).

Abstract: A sealing system for a spherical plain bearing assembly is provided and includes a flexible seal defining a base and a head. At least one low-friction liner is disposed on the flexible seal.

Abstract: A composite, dynamic seal suitable for use in a high temperature environment and method of making same. The dynamic seal includes a resilient, generally ring-shaped seal body having a first layer formed of a first resilient sealing material and a second layer formed of a second resilient sealing material. The first and second layers are preferably molded and cured together simultaneously and chemically cross-linked to each other. The first resilient sealing material is selected for its wear resistant dynamic properties and the second resilient sealing material is selected for its compression set resistant properties. Preferably, the first resilient sealing material is tetrafluoroethylene and propylene copolymer and the second resilient sealing material is fluorocarbon rubber. The first and second resilient sealing materials have compatible cure systems, preferably peroxide cure systems.

Abstract: A radial shaft seal is provided for accommodating large radial offset of the shaft relative to a housing. The seal includes an annular retainer insert provided for engaging the seal to a fixed housing. An annular elastomeric seal body is molded to the retainer insert and includes a flexible axially extending portion extending from an inner surface of the retainer insert. A seal portion extends from a radially inward end of the flexible portion and includes first and second seal lips and an elastomeric bearing surface disposed between the first and second sealing lips. The bearing surface includes a plurality of raised pads adapted to engage the shaft. The pads each include a rounded edge on lateral sides thereof for encouraging the creation of a lubricating film between the pads and shaft. The pads are lubricated by a lubricant disposed in a lubricant chamber disposed between the first and second seal lips.

Abstract: A seal assembly and method for the manufacture thereof is provided. The seal assembly provides a dynamic fluid seal between a housing having a bore and a shaft having an outer running surface rotating within the bore. The seal assembly comprises a rigid carrier for supporting the seal assembly within the bore of the housing. A flexible member is mounted to the rigid carrier. The flexible member is formed from an elastomeric material that allows the flexible member to flex during use. A sealing element is retained by the flexible member about the outer running surface. The sealing element is formed from a non-polytetrafluoroethylene bearing grade plastic material having a hardness relatively greater than a hardness of the elastomeric material of the flexible member. The sealing element moves with the flexible member as the flexible member flexes. The sealing element extends along the outer running surface in a plurality of helically wound convolutions.

Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a mounting portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the mounting portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The mounting portion defines a bumper spaced from the axially extending barrel portion by a gap distance that is designed to prevent the seal lip from inverting under sustained high pressure or pressure spikes.

Abstract: This invention provides an oil seal that can maintain an excellent friction reduction function over a long period of time, has excellent abrasion resistance, and further has excellent sealing properties. The oil seal comprises a seal lip (4) formed of a rubber-like elastic material comprising a lip edge part (9) and an air-side slope (8) and a sealing fluid-side slope (10) provided on both sides of the lip edge part (9). The air-side slope (8) has a coating film (14) on its surface. In the lip edge part (9) in its portion in contact with a shaft (13), a sealing fluid-side rubber part (2?) and an air-side coating film (14) are simultaneously brought into contact with the shaft (13). The coating film (14) is preferably formed of a coating agent comprising a fluororesin, a polyethylene resin, an isocyanate-modified polybutadiene resin, and a solvent.

Abstract: A flexible, resilient seal protects a bearing in a pitch joint of a helicopter blade assembly from contaminants. The seal includes a flexible, resilient body having a first end bonded to a stationary portion of the joint, and a second end biased into sealing engagement with a displaceable portion of the joint. The body includes an intermediate bellows section surrounding the bearing that expands and contracts to accommodate displacement between the stationary and movable portions of the joint. The second end of the seal includes a lip that rubs on a sacrificial wear layer formed on the second portion of the joint.

Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.

Abstract: A shaft seal includes an elastomeric annular body having a radially inwardly protruding annular lip. An annular outer case receives the elastomeric annular body. An annular inner case is embedded into the elastomeric annular body. An annular insert is positioned adjacent the inner case. A backup/support insert is received in a recessed pocket in the elastomeric body and outboard of an axially extending annular bead protruding from the body and compressed sealingly against the radially inward extending leg of the seals annular outer case. The backup/support insert and axially extending annular bead act to prevent sealed fluid pressure from acting against a rind portion of the elastomeric body thus leaving outwardly extending beads of the rind portion free to compress or decompress to accommodate eccentric deflection of the shaft. The outer case, the insert, the backup insert and the inner case support the lip and compensate for shaft offset.

Abstract: A seal assembly is disclosed which has a first elastomeric sealing member (11) for sealing a lubricating environment and a second non-elastomeric sealing member (13) side-by-side with the first sealing member for sealing a non-lubricated environment. The first sealing member (11) includes a sealing lip (15) having a sealing surface (16) and a generally U-shaped reinforced member (20) for supporting the sealing lip at a desired location.

Abstract: To maintain an excellent friction reducing function over a long period of time, with having excellent abrasion resistance and excellent sealing properties, the oil seal has a seal lip (4) made of a rubber-like elastic material and provided with an air-side slope (8) and a sealing fluid-side slope (10) on both sides of the lip edge part (9), the air-side slope (8) has a coating film (14) on its surface, a portion in contact with a shaft (13) in the lip edge part (9) is so made that a sealing fluid-side rubber part (2?) and an air-side coating film (14) simultaneously contact with the shaft (13), and the coating film (14) is preferably formed of a coating agent comprising a fluororesin, a polyethylene resin, an isocyanate-modified polybutadiene resin, and a solvent.

Abstract: A shaft seal includes a rigid annular casing to which a body of elastomeric seal material is molded. At least one elastomeric seal lip is formed of the elastomeric material. A PTFE element is bonded to the elastomer material and is formed with an undercut overlying the PTFE element to provide a flex hinge to the PTFE element that is isolated and independent from a hinge of the elastomeric seal lip.

Abstract: A radial shaft seal is provided for accommodating large radial offset of the shaft relative to a housing. The seal includes an annular retainer insert provided for engaging the seal to a fixed housing. An annular elastomeric seal body is molded to the retainer insert and includes flexible axially extending portion extending from an inner surface of the retainer insert. A seal portion extends axially from a radially inward end of the radially inwardly extending portion and includes a seal lip with a garter spring disposed radially outward of the sealing lip and an elastomeric bearing surface disposed adjacent to the sealing lip. The bearing surface includes a plurality of raised pads adapted to engage the shaft. The pads each include a rounded edge on lateral sides thereof for encouraging the creation of a lubricating film between the pads and shaft. The pads are lubricated by direct exposure to the fluid being sealed.

Abstract: A seal assembly and method for the manufacture thereof is provided. The seal assembly provides a dynamic fluid seal between a housing having a bore and a shaft having an outer running surface rotating within the bore. The seal assembly comprises a rigid carrier for supporting the seal assembly within the bore of the housing. A flexible member is mounted to the rigid carrier. The flexible member is formed from an elastomeric material that allows the flexible member to flex during use. A sealing element is retained by the flexible member about the outer running surface. The sealing element is formed from a non-polytetrafluoroethylene bearing grade plastic material having a hardness relatively greater than a hardness of the elastomeric material of the flexible member. The sealing element moves with the flexible member as the flexible member flexes. The sealing element extends along the outer running surface in a plurality of helically wound convolutions.

Abstract: A high pressure shaft seal (10A) for use in a refrigerating machine wherein carbon dioxide is used as a refrigerant in lieu of “Freon”. The seal has a sealing lip (24A) made of a non-elastomeric polymer material such as nylon that has a small gas permeability coefficient, a region of the sealing lip brought into contact with a shaft to be sealed being lined with a low friction lining (26A) of polytetrafluoroethylene. The gas barrier sealing lip (24A) of nylon serves to effectively block permeation of carbon dioxide gas under an extremely high pressure of from about 4 MPa to about 12 MPa. The sealing lip (24A) of nylon has a relatively high rigidity but is nevertheless able to resiliently undergo elastic deformation when such a high pressure is applied, to thereby resiliently follow any shaft run-out to exhibit sufficient dynamic and static sealing functions.

Abstract: A shaft seal includes an elastomeric annular body having an outwardly protruding annular lip. An annular outer case is embedded into the body. An annular insert is positioned adjacent the outer case. An annular inner case is embedded into the body adjacent the insert. The outer case, the insert, and the inner case support the lip.

Abstract: In a multi-chamber device a chamber with lubricant is sealed off on a rotationally drivable component from a second chamber at a peg of a power tool, by at least one seal sliding at a contact face, and least one stationary component is provided in the chamber with lubricant before the contact face and surrounds a rotationally drivable component at least over a region of a circumference to substantially prevent turbulence in the lubricant in a region of the contact face.

Abstract: A seal for sealing rotating shafts, or rods that move back and forth, comprising a shaft-sealing or rod-sealing element that has a sealing surface or sealing edge. The sealing element is provided on at least one of its surfaces with a facing that consists of a nonvowen material impregnated with a polymer dispersion.

Abstract: Sealing device (1) for a rolling contact bearing (2) presenting an annular sealing lining (5), a protective shield (6) for the lining (5) which is mounted on the outside of the lining (5) itself, and an encoder (15) which is integral to the shield (6) and which is protected by a covering element (16) arranged opposite the shield (6) in relation to the encoder (15).

Abstract: An annular seal (10) for a rolling roll (12) able to be assembled rotatable on at least one supporting oil-film bearing (15), including an annular body (20) made of flexible material, shaped to define a central cavity (21) able to be coupled with a tapered end (11) of the rolling roll (12), between the supporting bearing (15) and a front surface (16) of the rolling roll (12), and a pair of substantially parallel radial appendices (22, 23), which define an outer annular compartment (25) in which, during use, a separation element (26) of a fixed supporting flange (27) is able to be arranged; in the seal (10) at least terminal lips (29, 30) of the radial appendices (22, 23), at least on the side arranged towards the annular compartment (25), are provided with anti-wear elements (31) able to contact, during use, a sliding surface (32) of the fixed supporting flange (27).

Abstract: The air damper includes a piston reciprocating within a cylindrical housing. The piston includes a lip seal which is coated with a minimum of 0.5%/seal part weight graphite powder/molybdenum disulfide. This provides for increased smoothness of operation of the air damper, particularly at low speeds.

Abstract: A method of fabricating a fluid seal for sealing a relatively rotatable member, wherein the fluid seal has an elastomeric sealing member bonded to a PTFE insert. A wafer of PTFE material has a body portion and an end portion of a greater thickness than the body portion. The wafer is placed in a mold cavity with one side of the wafer opposed to a surface portion of the mold cavity. Elastomeric material is forced into the mold cavity to form a molded preform of the elastomeric sealing member and bond the preform to an opposite side of the wafer. The molded preform and bonded wafer are removed from the mold cavity. The end portion of the wafer and an end portion of the preform are trimmed to form the fluid seal.

Abstract: A universal joint seal for retaining lubricant therein. The seal cooperates to form a static seal with the trunnion and a static seal with the bearing cup and permits relative angular movement between the trunnion and bearing cup through a flexible web portion. The seal optionally permits venting of pressure within the grease cavity formed between the trunnion and bearing cup. The seal also has a passage communicating with the grease cavity. The seal has an outward facing lip seal that provides a fluid barrier to the migration of lubricant out of the passage. In response to a moderate pressure level within the grease cavity, the lip moves away from the contacting surface so as to vent the moderate pressure within the grease cavity out of the sealed region and to prevent an excessive pressure differential from developing across the lip. Several alternate embodiments permitting venting of pressure from the grease cavity are disclosed.

Abstract: A radial lip seal for sealably mounting within a split circular seal housing includes a seal body having a channel disposed along a seal body outside diameter. The radial split seal includes an annular seal body which is divided into at least two substantially similar semi-annular seal body sections that are each connected together at end portions. The seal body formed from such sections includes a sealing lip that extends radially inwardly from the body for slidable sealing contact around a rotatable shaft. An energizer is seated within the channel. The seal is mounted within a seal housing that is configured to fix the axial placement of the seal therein. The energizer is interposed between the seal and the seal housing to both allow the seal to move radially a desired distance within the seal housing in response to seal thermal expansion and contraction, and to provide a leak-tight seal therebetween.

Abstract: The air damper includes a piston reciprocating within a cylindrical housing. The piston includes a lip seal which is made of rubber or thermoplastic elastomer impregnated with a minimum of 3% molybdenum/seal part weight, or a minimum of 2% polytetrafluoroethylene or silicone/seal part weight or a minimum of 1% wax/seal part weight. The lip seal is coated with a minimum of 0.5%/seal part weight graphite powder/molybdenum disulfide. The housing is made with a minimum of 2% silicone impregnated thermoplastic or a minimum of 2% moly sulfide impregnated thermoplastic. This provides for increased smoothness of operation of the air damper, particularly at low speeds.

Abstract: A shaft seal includes an elastomeric annular body having an outwardly protruding annular lip. An annular outer case is embedded into the body. An annular insert is positioned adjacent the outer case. An annular inner case is embedded into the body adjacent the insert. The outer case, the insert, and the inner case support the lip.

Abstract: The invention concerns a packing seal with its lip (1) placed in a toroidal housing (2) of a part (3) mobile in rotation and/or translation relatively to a part (4) and whereof the lip (5) ensuring the seal between the lining and the part (4) exerts on said part (4) an almost constant force whatever the pressure and whereof the support diameter can be maintained also almost constant whatever the temperature.

Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.

Abstract: On a radially inner surface of a sealing lip of an oil seal, radiation ray is irradiated to induce chemical reaction in the materials of the sealing lip, to form hard helical portions. The hard helical portions act like a helical groove or rib to pump oil back to oil-side to show an excellent sealing property when there is a relative rotational movement between the sealing lip and a shaft to be sealed, as well as even static sealing ability at the time there is no relative rotative movement.

Abstract: A sealing assembly for two mechanical members connected for relative rotation; a first mechanical member is fitted integrally with a substantially rigid shield, from which projects radially an annular sealing member having, on a respective first annular face, a first and a second axial sealing lip, both cooperating in sliding manner with a sealing surface of a second mechanical member; when the first annular face of the annular sealing member is subjected to a pressure substantially equal to the pressure on a second annular face, opposite the first, of the annular sealing member, only the first lip cooperates in sliding manner with the sealing surface, and the second lip mates, with no interference, with the sealing surface to permit fluid passage; conversely, when the first annular face is subjected to a pressure significantly lower than the pressure on the opposite second annular face, the annular sealing member is deformed elastically so that the second lip also cooperates in sliding manner with the sealin