Abstract: A shaft seal device is provided in which movement of the seal lip is prevented and the sealing function can be reliably maintained by shaping the adapter so that the adapter is more readily pressed into and less liable to be dislodged from the cartridge, and by increasing the width in the radial direction. An external peripheral-side flange of the adapter fitted into the cartridge on the sealing fluid side of the first lip seal member is formed in a small-diameter tapered shape toward the web side, and the web is composed of an external-periphery-side portion having an orthogonal planar shape that is orthogonal to the center of the shaft, and a tapered internal-periphery-side portion that slopes to the sealing fluid side.

Abstract: A seal protector assembly is provided. The seal protector assembly includes a cavity for encasing a seal. A plug or cap is removably attached to the protector seal. After shipment of the transmission, the plug or cap is removed. Once any potential damage to the seal during assembly has passed, the protector is then removed.

Abstract: An annular elastic gasket adapted to be disposed between an insertion hole formed in a housing and a cylindrical body which is inserted into the housing via the insertion hole in such a manner that the annular elastic gasket elastically contacts an inner surface of the insertion hole and an outer circumferential surface of the cylindrical body. The annular elastic gasket comprises a hollow cylindrical gasket base body comprised of a molded body made of an elastic material, to be compressedly fitted and retained in the insertion hole, an annular seal lip portion extending in the centripetal direction from the gasket base body and an elastic extending portion which constitutes an extending base portion at an end of a tip side portion of the annular seal lip portion, being bent in such a manner that the end directs in the centripetal direction.

Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).

Abstract: The present cartridge seal assemblies pertain to rotary lip-type seals. In certain embodiments, a sealing member is constructed of a relatively hard material that increases the lifespan of the sealing member. The sealing member is energized with a canted-coil spring, which in some embodiments includes an adjustable spring force. The present embodiments enable control of sealing force to achieve an appropriate sealing force between the sealing member and the shaft based on factors such as temperature, pressure, rotary speed, properties of fluid media, etc. to achieve longer seal life.

Abstract: A sealing arrangement includes a stationary first machine part configured as an axle stub including at least one axial inflow hole adjoining with at least one opening that faces towards an outside surface of the axle stub in a radial direction of the axle stub. A second machine part configured as a container includes a hub rotatably surrounding the axle stub. The hub includes at least one opening that corresponds to the at least one opening of the axle stub in the radial direction so as to form one or more pairs of adjacent openings along an axial direction. A radial seal is disposed between each pair of adjacent openings.

Abstract: The invention relates to a seal (160) for sealing two opposite contact surfaces along a closed contour, comprising an elastic sealing element (210), which has two opposite sealing surfaces (240) to bear against the contact surfaces in the region of the contour, two spring elements (220, 230), each of which is associated with one of the sealing surfaces, and a supporting element (250) arranged between the spring elements, wherein each spring element comprises two limbs (260, 270), one limb pressing the sealing surface associated with the spring element against one of the contact surfaces and the other limb being supported on the supporting element.

Abstract: A rotary seal arrangement has a rotatable component (2) supported within a machine component (3), the machine component (3) forming a housing structure for a sealing means (23) which acts to seal off a high-pressure area (10) between the components (2,3) to allow the passage of high pressure fluid therebetween. The seal arrangement includes a holding element (30) for mounting in the machine component (3) to support spaced sealing members (23) therein to define said high pressure area (10) therebetween. The arrangement is particularly suitable for use where the rotatable component (2) is formed as a rotatable shaft and the holding element (30) and sealing members (23) are arranged around the shaft such as, for example, in a vehicle tyre pressure changing system for use on an agricultural tractor.

Abstract: A shaft seal device is provided in which movement of the seal lip is prevented and the sealing function can be reliably maintained by shaping the adapter so that the adapter is more readily pressed into and less liable to be dislodged from the cartridge, and by increasing the width in the radial direction. An external peripheral-side flange of the adapter fitted into the cartridge on the sealing fluid side of the first lip seal member is formed in a small-diameter tapered shape toward the web side, and the web is composed of an external-periphery-side portion having an orthogonal planar shape that is orthogonal to the center of the shaft, and a tapered internal-periphery-side portion that slopes to the sealing fluid side.

Abstract: A support device of a propeller shaft comprises an annular bracket fixed to a floor member of a vehicle body; an annular elastic member disposed in the annular bracket; an annular supporting structure disposed in the annular elastic member and rotatably supporting a cylindrical given portion of the propeller shaft through a ball bearing unit; and an annular seal member intimately disposed in an annular space defined between the annular supporting structure and the cylindrical given portion of the propeller shaft. One of outer and inner cylindrical surfaces of the annular seal member is in slidable contact with either one of an inner cylindrical surface of the annular supporting structure and an outer cylindrical surface of the cylindrical given portion of the propeller shaft.

Abstract: An oil seal has a first seal member including a main lip and a first dust lip, and a second seal member installed in a machine outer side of the first seal member. The second seal member integrally has an end surface covering section covering an end surface section of a housing, an outer peripheral insertion section inserted from one side in an axial direction to an outer peripheral surface of the housing and engaged with a stepped engagement section in the outer peripheral surface of the housing so as to prevent the second seal member from coming off from the housing, an inner peripheral insertion section inserted to an inner peripheral surface of the shaft hole in the housing from one side in the axial direction, and a second dust lip slidably coming into close contact with the shaft in the machine outer side of the first dust lip.

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: A shaft seal device is provided in which movement of the seal lip is prevented and the sealing function can be reliably maintained by shaping the adapter so that the adapter is more readily pressed into and less liable to be dislodged from the cartridge, and by increasing the width in the radial direction. An external peripheral-side flange of the adapter fitted into the cartridge on the sealing fluid side of the first lip seal member is formed in a small-diameter tapered shape toward the web side, and the web is composed of an external-periphery-side portion having an orthogonal planar shape that is orthogonal to the center of the shaft, and a tapered internal-periphery-side portion that slopes to the sealing fluid side.

Abstract: To prevent muddy water intrusion into a sliding section (S1) of an oil seal lip (13), a sealing device (1) has an oil seal (10) mounted at an opening end (2a) of a housing (2) and a slinger (20) mounted axially outside the oil seal (10) on a rotating body (5), the oil seal (10) is formed from a rubber-like elastic material integrally with a metal reinforcement ring (11) and has the oil seal lip (13) slidably contacting with the outer peripheral surface of the rotating body (5) and a side lip (15) slidably contacting with the slinger (20), the reinforcement ring (11) has a sliding tube section (11b) radially outside a sliding section (S2) of the side lip (15), and a external seal lip (23) provided on a radially outer section (22a) of the slinger (20) slidably contacts with the outer peripheral surface of the sliding tube section (11b).

Abstract: The bearing seal assembly (50) includes a metal shield (70) and a resilient multi-lip sealing gasket (60) secured to the metal shield. The metal shield is supported in use by an outer ring (20) of a rolling contact bearing and includes a diagonally extending central portion (72). The sealing gasket (60) provides a number of contacting lips (62-64) facing an inner ring of the rolling contact bearing. A first, main contacting lip (66) exerts a first radial load on the inner ring. A second contacting lip (62) extends from the first lip (66) and exerts a second radial load on the inner ring lower than the first radial load. A third contacting lip (64) is on the opposite side of the second lip (62) with respect to the first lip (66) and exerts a third radial load on the inner ring lower than the first radial load but greater than the second radial load.

Abstract: A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the seal from an oil side of the shaft seal is provided. The seal includes a mounting portion and a seal lip having an annular sealing surface extending between an oil side end and a free air side end. An annular bridge is connected to the oil side end of the seal lip by a first hinge and to the mounting portion by a second hinge. The bridge extends from the first hinge to the second hinge in radially overlying relation to the seal lip. An annular projection extends from the mounting portion axially away from the bridge. The projection has an oil side facing the seal lip and confronts the air side end of the seal lip upon the seal lip pivoting about the first hinge.

Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.

Abstract: Seal assemblies for sealing around a moveable shaft, such as rotary or reciprocating, or static, are described. The seal assemblies prevent the passage of lubricant or fluid from a relatively high pressure area on a first side of the seal to a relatively low pressure area on a second side of the seal. In some embodiments, these seals are energized by energizers, such as circular springs or canted springs, to keep the seal in contact with the moveable shaft. The seals have primary and secondary seals. The secondary seal provides initial moderate sealing against abrasive particles or contaminants to reduce the exposure and wear of the primary seal.

Abstract: A unitized radial fluid seal includes a shell having a first elastomeric seal body affixed thereto and defining a primary seal lip. A sleeve includes a substantially cylindrical, axially-extending sealing flange and a protective flange extending substantially radially from the axially-extending sealing flange. A spring radially urges the primary seal lip into sealing contact with a sealing surface of the axially-extending sealing flange. A second elastomeric seal body is affixed to the sleeve and includes a resiliently-elastic angled lip extending from a terminal end of the axially-extending sealing flange opposite of the radially-extending protective flange. The sealing surface and an axially-outward facing surface of the angled lip define an angle (?) that is between about 130-170°. The primary seal lip is axially retained between the angled lip and the radially-extending protective flange.

Abstract: A fixing arrangement for a rubber seal for sealing a rolling bearing is proposed which can be easily mounted in position by press-fitting and which prevents rotation of the rubber seal together with the rotary member of the bearing. A thick-walled fitting portion 3 and a protrusion 4 are formed on the radially outer portion of a rubber seal 1 reinforced by a metal core 2. The fitting portion 3 is press-fitted in a seal groove 22 formed in the radially inner surface of an outer race 21 at each end. The protrusion 4 is brought into elastic contact with a large-diameter cylindrical surface 23 formed on the outer race 21. Thus, the rubber seal 1 is fixed in position and prevented from rotating together with the inner race of the bearing.

Abstract: A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal.

Abstract: A system is disclosed for use in a rolling mill oil film bearing to remove a laminar flow of oil exiting tangentially from between a rotating sleeve and a fixed bushing surrounding the sleeve. The system comprises confinement surfaces cooperating with the sleeve and the bushing to define an annular chamber arranged to receive the exiting laminar flow of oil. Impellers project into the chamber and are rotatable with and at the velocity of the sleeve to thereby propel the oil around the annular chamber. An outlet communicates tangentially with the annular chamber for removing oil being propelled around the chamber by the rotation of the impellers. The size of the outlet in relation to the volume of oil received in the annular chamber is such that the chamber remains filled with oil during steady state operation of the bearing.

Abstract: A dynamic seal assembly for installation between first and second relatively rotating members, comprising a ring for fixed engagement with said first member and an annular seal extending radially from said ring and configured to slidably engage said second member, wherein said radial seal has a thickness, and a length that is from about 1 to about 15 times greater than said thickness. In various embodiments, the seal is formed of a rubber composition comprising a vulcanized fluorocarbon elastomer dispersed in a matrix of a thermoplastic polymeric material. In various embodiments, the matrix forms a continuous phase and the vulcanized elastomeric material is in the form of particles forming a non-continuous phase. The compositions may be made by combining a curative, an uncured fluorocarbon elastomer, and a thermoplastic material, and heating the mixture to effect vulcanization of the elastomeric material, while applying mechanical energy.

Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.

Abstract: A dynamic radial shaft seal assembly includes an inner wear sleeve having a cylindrical inner wall with a bore sized for receipt about a shaft and an outer running surface. The inner wear sleeve has a flange extending radially outwardly from the running surface. The assembly further includes an outer case having cylindrical outer wall configured for receipt in a housing and a rim extending radially inwardly from the outer wall. An elastomeric body is attached to the rim. The elastomeric body includes a main seal lip configured to engage the outer running surface of the inner wear sleeve and a plurality of thrust pads extending axially from the rim for engagement with the flange. The thrust pads are spaced circumferentially from one another by gaps. The elastomeric body further includes a first dust exclusion lip extending axially from the leg and bridging the gaps.

Abstract: A seal assembly, includes a seal element including at least one seal lip, a wiper element including a wiper lip, and a structural element attached to the seal element and the wiper element, the seal assembly being configured for functioning under pressure in an amount greater than 500 pounds per square inch.

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 system is disclosed for use in a rolling mill oil film bearing to remove oil exiting from between a rotating sleeve and a fixed bushing surrounding the sleeve. The system comprises an annular chamber arranged to receive the exiting flow of oil. The chamber is isolated from a drainage sump by confinement surfaces including a seal interface defined by a flexible seal in contact with an adjacent rigid component of the bearing. Impellers project into the chamber and are rotable with and at the velocity of the sleeve to rotatively propel oil around the chamber. A discharge conduit communicates tangentially with the chamber and is arranged to receive a pressurized flow of the oil being rotatively propelled around the chamber. A venturi is located in the discharge conduit. A suction conduit connects the venturi to the drainage sump. Oil escaping from the annular chamber past the seal interface into the drainage sump is aspirated by the venturi for removal via the conduit.

Abstract: An improved shaft seal includes a plurality of V-pack rings that each includes a bi-directional cut with cuts of unequal lengths. An upper cut extends from the top of the V-pack ring to the shoulder. A lower cut extends from the bottom of the V-pack to the shoulder and is longer in length than the upper cut.

Abstract: A shaft-sealing device comprising a sealing ring having a seal secured thereto, and a protective member engaged with the sealing ring. The said protective member includes a cylindrical member having a shaft-engaging surface and a seal-engaging surface, and an annular flange extends radially away from the shaft. The shaft-engaging surface is operable to be attached to the shaft during operation of the device, and the seal-engaging surface is operable to be in sealing contact with the seal during operation of the device. The annular flange is operable to engage the sealing ring.

Abstract: Seal assemblies and methods for forming them are described. Aspects of the seal assemblies include a seal ring made of a relative soft material supported by a specially configured backing ring made of a much higher modulus material, such as ferrous and non-ferrous metal or engineered plastic. The seal assemblies may optionally include a retaining ring to prevent slippage relative to the environment or housing in which they are placed and to prevent shuttling. The seal assemblies may also optionally include an energizer to alter the force generating by a sealing lip on the seal ring.

Abstract: A seal assembly is for sealing a space between a housing and a shaft rotatable about a central axis. The seal assembly includes a seal body connectable with the housing and having an inner circumferential sealing surface. The sealing surface has opposing axial ends and is slidably contactable with the shaft outer surface to define a sealing interface. An annular biasing member, preferably a garter spring, is disposed about a portion of the seal body and has a centerline. The biasing member exerts a biasing force directed radially inwardly toward the centerline, such that the seal exerts a contact pressure on the shaft. Further, the biasing member is angularly positioned on the seal body such that the contact pressure extends axially along the shaft axis to direct substances entering the sealing interface toward a proximal axial end of the sealing surface when the shaft rotates about the central axis.

Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.

Abstract: An oil seal for reciprocation motion including a seal main body, a resin backup ring, and a holding member. The seal main body includes a seal lip that can be in sliding contact with a reciprocating shaft. The backup ring is disposed such as to support the seal lip from the atmosphere side to ensure durability of the seal lip. In the backup ring, at least a single annular groove is provided on the inner peripheral surface opposing the reciprocating shaft. The annular groove can hold a lubricating material. The holding member holds the backup ring between the holding member and the seal main body in a sandwiched-state. The inner peripheral surface of the backup ring forms a taper that increases in diameter from a sealed side towards an atmosphere side in the axial direction.

Abstract: The hydraulic cylinder having a portion on a side of a lip tip end of an annular clearance between an inner circumferential face of a shaft hole of a cylinder and a piston is made up of a minute clearance in order to suppress protrusion of the lip, wherein an annular clearance area for suppressing occurrence of the cavitation and for shortening an axial distance of the annular clearance portion made up of the minute clearance is formed on an opposite side of the annular clearance portion from a mounting groove.

Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.

Abstract: An oil seal for sealing a hollow rotary shaft in a power transmission apparatus, wherein the rotary shaft is formed with an internal flow passage through which oil flows and constituted such that the oil flies out as the rotary shaft rotates, including: a fixed portion that is fixedly attached to a case of the power transmission apparatus; a seal portion that seals the rotary shaft at a position that is axially offset position from the fixed portion and allows the rotary shaft to rotate; and a radiator portion that is formed from a metallic material between the fixed portion and the seal portion, receives the oil that flies out as the rotary shaft rotates, and dissipates heat generated by the seal portion by exchanging heat with the oil.

Abstract: For better assembling characteristic and sealing performance with secured circularity and coaxiality of a seal lip, a lip type seal installed to an inner periphery of a shaft hole of a housing in slidable contact with a peripheral surface of a shaft for inhibiting a sealed fluid in the machine from leaking to an atmospheric air side, has a cartridge fitted to an inner periphery of the shaft hole, a first lip seal member made of a rubber-like elastic material and fitted in a non-bonding manner to the cartridge, a case fitted in a non-bonding manner to the first lip seal member, a second lip seal member made of a resin and a backup ring supporting the second lip seal member which are retained by caulking to the case, and an adapter fitted to the cartridge at a sealed fluid side of the first lip seal member.

Abstract: A mechanical seal typically includes gaskets as secondary seals therein. An improved gasket is provided which has a U cup design wherein the gasket is formed with a first spring-energized groove which opens radially and has a deflectable sealing wall which is deflectable axially, and includes a second spring-energized groove which is canted at an angle relative to the axial and radial directions wherein the groove defines a sealing leg which is deflectable at an angle relative to the axial and radial directions. A support ring supports the canted sealing leg along the major extent thereof wherein an end portion of the canted sealing leg is disposed for sealing contact with an axially-extending component surface.

Abstract: A radial shaft seal assembly includes an outer case having an axially extending cylindrical outer rim and an axially extending cylindrical inner rim spaced radially from one another by an annular pocket. A radially extending first leg connects the outer rim to the inner rim and a second leg extends radially inwardly from the inner rim to a free end. The assembly includes a wear sleeve having an axially extending cylindrical wall with an outer surface providing a running surface and a flange extending radially outwardly from the running surface. A seal lip extends inwardly from the free end of the second leg into sealing abutment with the running surface. A first porous filter is received in the pocket, and a second porous filter extends in substantial abutment with the outer rim and the second leg of the outer case.

Abstract: To avoid interference of a side lip when plural sealing devices are piled up, a sealing device installed on one member of two members rotating relatively is constructed by combining a mounting ring fitted on the one member and a rubber-like elastic body attached on the mounting ring, and has a side lip formed by the elastic body, the mounting ring has a cylinder portion at a position fitted on the peripheral surface of the one member, the elastic body has a rubber step part provided at axially one side of the cylinder portion, the cylinder portion and the rubber step part have a positional relationship that the former of an upper sealing device is placed on the latter of the one sealing device when piled up, and the side lip of the one sealing device is dimensioned not to interfere with the upper sealing device even when they are in such a positional relationship.

Abstract: Sealing unit adapted to be coupled to a rolling-element bearing to seal off the annular space between an inner ring and an outer ring of the bearing, the sealing unit having a stiffening core, and an elastomeric annular element that is rigidly secured to the stiffening core and provided with a sealing lip and a root portion, which is positioned radially on the opposite side of the sealing lip, and which can be snap-fitted into a groove of the outer ring in order to abut the root portion on a front wall of the groove with the core facing toward the outside of bearing.

Abstract: To prevent damage and malfunction, a sealing device for a universal joint has a metal ring (11) fitted on the outer peripheral surface of a shaft portion (111) of a cruciform spider (110) of the universal joint, and inner seal lips (12, 13) and an outer seal lip (14) made of a rubber-like elastic material and provided integrally with the metal ring (11), the inner seal lips (12, 13) slidably contact with the inner peripheral surface of an end of an outer ring (121) of a bearing (120) relatively rotatably supporting the shaft portion (111), the outer seal lip (14) slidably contact with a rising surface (112a) of a boss portion (112) of the cruciform spider (110), and the rising surface (112a) is a surface rising, outside the position where the metal ring (11) is fitted, in an outward radial direction from the shaft portion (111).

Abstract: A seal for a vehicle having a transmission output shaft and a transmission output shaft housing is provided. The seal comprises a contact member at least partially surrounding and contacting the transmission output shaft, a support member coupled to the contact member, the support member at least partially surrounding the transmission output shaft and extending along the transmission output shaft, the support member coupled to the transmission output shaft housing, and an electrically-conductive surface overlying at least a portion of the contact member and at least a portion of the support member, the electrically-conductive surface contacting the transmission output shaft and the transmission output shaft housing.

Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.

Abstract: A wheel seal is mainly provided with an annular internal sleeve oil seal. An annular concave inwards is formed at one side of the internal sleeve oil seal to contain one end of an annular outer annular member. A gap is kept between the internal sleeve oil seal and the outer annular member to contain an anti-friction ring and a second barrier. A labyrinth zone that is up and down is formed in the second barrier. Thus, the anti-friction ring is used to not only block foreign matters from entering the wheel seal through the gap and then being damaged, but also effectively transfer the strength from the inner annular member to the outer annular member at the time of installation for increasing the success rate of installation.

Abstract: A sealing assembly including a sealing ring made of elastomeric material and having, integrally in one piece, at least one elastically deformable, annular sealing lip, at least part of which projects axially from and radially inwards of the sealing ring, from a respective root portion adjacent to a first axial end of the sealing ring, and towards a second axial end, opposite the first, of the sealing ring; and an annular reinforcing structure made of material which is elastically deformable but relatively much more rigid than the elastomeric material of the sealing ring and relative lip, and at least partly embedded in the sealing ring; wherein the reinforcing structure extends at least partly in an axial direction, at least partly alongside but on the opposite side to the sealing lip; the sealing lip being designed to define, when undeformed, a predetermined radial clearance between itself and a radially inner lateral wall of the sealing ring.

Abstract: A seal shipping system includes a seal having an outer diameter surface and an inner sealing lip. A sleeve member having a cylindrical body and a radially extending flange extending from the cylindrical body engages the inner sealing lip. An annular collar surrounds the radially extending flange of the sleeve member and frictionally engages the outer diameter surface of the seal.

Abstract: Seal assemblies are herein discussed. The seal assemblies can have a stiff backing ring supporting a seal ring, which is positioned adjacent an inner seal ring. In preferred embodiments, the inner seal ring is made from a material that enables the inner seal ring to absorb media particles in situ to change its particle density. This allows the seal assembly to form wearable surfaces on the fly to decrease wear on the seal ring.

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.