Abstract: A sealing device and a sealing structure in which sliding ability is stabilized are provided. A lip tip of a first seal lip (120) includes a first tapered surface (123a) which expands in diameter toward a sealed fluid side (L) and a second tapered surface (123b) which expands in diameter toward an opposite side (A) of the sealed fluid side, the second tapered surface (123b) is provided with a plurality of screw thread protrusions (or screw thread grooves) (124) which move grease (170) in the axial direction while rotating relative to a rotary shaft (21), and each of the plurality of screw thread protrusions (or screw thread grooves) (124) is disposed so as to move the grease (170) toward the opposite side (A) of the sealed fluid side.

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: The invention relates to an element (10) for sealing two parts (2, 3) that can be rotated in relation to one another. Said element comprises at least one first sealing ring (11) consisting of a permanently elastic material, which is fixed to one of the two rotatable parts and comprises at least one sealing lip (21) and at least one second sealing ring (12), which is fixed to the other rotatable part and comprises a strip (19) consisting of another material that runs along its periphery. At least one sealing lip of the first sealing ring lies against said strip.

Abstract: A low friction seal for sealing between a shaft and a bore and includes an inner case adapted to be mounted on the shaft. An outer case is adapted to be mounted within the bore. A seal element is mounted to the inner case and includes a base portion attached to the inner case. A membrane extends from the base portion and an axially extending leg extends from the membrane. A seal lip extends from the axially extending leg and sealingly engages a radially extending portion of the outer case. As the shaft rotates, the centrifugal forces tend to cause the membrane to flex and the torque loads applied by the dynamic seal are reduced to the point that the seal lip can lift off and apply zero torque load.

Abstract: A bearing seal includes a metal core having a radially outer portion engaged in an inner seal groove of a bearing outer race. The core includes a bent portion engaged in the seal groove, a radially outer flange extending inwardly from an end of the bent portion located inside the bearing, a tapered tubular portion having a large-diameter end thereof connected to a small-diameter end of the outer flange and a small-diameter end thereof located axially outwardly of its large-diameter end, and a radially inner flange extending inwardly from the small-diameter end of the tubular portion. A rubber seal is fixed to an inner surface of the metal core that faces the interior of the bearing. The rubber seal includes a thick-walled portion having an inner radial step, and formed with three lips that elastically contact the inner race outer surface. The thick-walled portion includes a small-diameter thick-walled portion.

Abstract: A stern tube sealing assembly and a seal ring thereof has a key part having an inverted V-shape, a front step part on the front side, and a back step part on the back side thereof. The seal ring width in a propulsion-shaft axis direction becomes thinner in the transition area from the key part toward a heel part. The inner diameter of the key part at the back step part is greater than that of the key part at the front step part. The ring has a lip part having a V-shaped lip tip protruding inwardly in the radial direction and a spring groove having a semicircular cross-section. The center of the spring groove is nearer to the inboard side than the lip tip, by an offset in the axis direction, the offset being within approximately 10% of the orthogonal projection length of the width of the lip back.

Abstract: A sealing device that hermetically seals a gap between a first member and a second member that is reciprocally movable with respect to the first member. The sealing device seals liquid supplied into a pressurizing chamber surrounded by the first member and the second member. The sealing device includes a seal member that is attached to the second member. The seal member slides relative to the first member while being in contact with the first member. The seal member includes a base portion and a protruding portion. The protruding portion protrudes from the base portion toward the first member to separate the first member from the base portion. After the liquid is supplied into the pressurizing chamber to fill the pressurizing chamber with the liquid, the protruding portion elastically deforms to bring the base portion into close contact with the first member.

Abstract: There is provided a sealing system with improved durability. In a sealing system in which a dust seal includes a first dust seal 100 and a second dust seal 200 provided on an atmosphere side of the first dust seal 100 and each of the first dust seal 100 and the second dust seal 200 has (a) seal lip(s) for sliding on an outer peripheral face of the shaft, the seal lips 121 and 122 of the first dust seal 100 are made of polyurethane rubber and the seal lip 221 of the second dust seal 200 is made of rubber having higher flexibility than the polyurethane rubber and is only the seal lip 221 extending toward the atmosphere side.

Abstract: A seal includes a mounting portion having an outer diameter surface adapted to be received in a bore. An axially extending leg extends from the mounting portion. A hinge portion is disposed at an end of the axially extending leg. The hinge portion has a generally round cross-section with a larger diameter than the end of the axially extending leg. A main seal lip and a dust lip extend from the hinge portion.

Abstract: An all-elastomeric sealing element for a rotating control device includes a base portion, a conical portion and has a central pipe opening through both the base portion and the conical section. The conical section has an elastomeric core layer and an elastomeric surface sealing layer which encases the core layer. The surface sealing layer is softer than the core layer, as measured on a standard durometer scale.

Abstract: A shaft seal assembly includes a metal case having an annular leg extending radially inwardly to a free end with opposite oil and air sides of the leg facing respective oil and air sides of the seal assembly. An elastomeric material bonded to the leg forms a main body adjacent the free end and a primary seal lip radially inwardly from the main body. The primary seal lip has a sealing surface that extends between an air side end and free oil side end. The air side end is attached to an annular bridge via a first hinge and the bridge is operably attached to the main body via a second hinge. The first and second hinges each have a thickness that is less than a thickness of the bridge and the thickness of the first hinge is less than a thickness of the primary seal lip.

Abstract: A seal (1) for a hydrostatic linear guide with a given adjustment direction (5), with a longitudinal seal section (7, 7?) extending essentially parallel to the adjustment direction (5), and with a transverse seal section (8, 8?) extending essentially transverse to the adjustment direction (5), wherein a first lip seal with a projecting lip portion (12) extends along the longitudinal seal section and a second lip seal with a projecting lip portion (14) extends along the transverse seal section. A height of the projecting lip portion (12) of the first lip seal oscillates in a wave shape in the adjustment direction. With such a seal (1), both a high degree of static oil tightness and also a high degree of dynamic oil tightness are achieved for a hydrostatic linear guide.

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: 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: A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.

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: A pump adapted for coupling in a fluid circuit between a source of coating material and a dispensing device. The pump includes an operating member which extends through a pump housing to a location adjacent the fluid circuit. The passage of the operating member to a location adjacent the fluid circuit includes a seal system permit operation of the pump while reducing the likelihood of leakage of the coating material from the circuit out of the housing along the operating member. The seal system includes at least first and second seals defining between them a flushable seal chamber facing a pump chamber containing the coating material being pumped.

Abstract: A journal seal for rolling bearings, wherein the journal seal includes a ring-shaped sealing body, which is rotatably fixed to a roller journal with the bearing surface coaxially oriented in relation to the bearing axis and with at least two spaced webs facing away from the bearing axis. The webs being directly or indirectly in contact with an annular projection. A reinforcing element for that reinforces the sealing body. The reinforcing element has a width that is greater than the outer distance of the two webs.

Abstract: A lip type seal has a cartridge fitted to an inner periphery of a shaft hole, a first lip seal member, a case, a resin second lip seal member, a backup ring and an adapter, a protrusion section in a partial portion on a circumference is provided in a first flange section of the case to engage with the second lip seal member, whereby the second lip seal member is prevented from whirling with respect to the case and coming off to an inner side in a radial direction, and a projecting section in a partial portion on a circumference is provided in a flange section of the backup ring to engage with the second lip seal member, whereby the second lip seal member is prevented from whirling with respect to the backup ring and coming off to the inner side in the radial direction.

Abstract: A seal is provided comprising at least two sealing lips including a first sealing lip and a second sealing lip being arranged in series. A sealing system is provided which ensures a problem-free operation with a long service life at the same time. The seal is characterized in that the sealing lips are made of different materials. A system, which includes such a seal, is assigned to a rotatable shaft and at least two sealing lips seal off two spaces against each other.

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 lip portion consists of two cylindrical axial lips 421, 422 extended in parallel to an axial direction of a seal 4 and in different lengths (a radial lip is obviated). A neck 22 of a cross shaft 2 is formed with a neck slant portion 221 defined by a conical surface inclined at 45° relative to an axis thereof. The two axial lips 421, 422 are pressed against the neck slant portion in the axial direction.

Abstract: A sealing arrangement includes a housing component, a shaft at least partially accommodated by the housing component, and a plurality of sealing elements, which can be moved along the longitudinal axis of the shaft for sealing the intermediate space between the housing component and the shaft. The shaft includes a section that extends in the longitudinal direction of the shaft and has a shaft diameter that is tapered in steps. The sealing elements can be moved from a first position, in which a first sealing element lies against a first step, to further positions, in which additionally at least one further sealing element lies against one further step per sealing element.

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 resin lip type seal has first and second inner peripheral seal lips and an outer peripheral seal lip slidably contacting an operation member and a fixed member. The second inner peripheral seal lip is formed in a plate-shape to extend obliquely in an inner peripheral direction toward a second sealed fluid side so that an inner peripheral side end portion slidably contacts with a shaft and an outer peripheral side end portion contacts with a tapered surface formed on a housing or an installation member of the housing, whereby contact surface pressure in the inner peripheral direction acts on the inner peripheral side end portion.

Abstract: A sealing device comprises a stationary-side installation ring (11) fixed to an outer stationary-side member (201), a rotation-side installation ring (12) fixed to an inner rotation-side member (202), a stationary-side lip (13) provided on the stationary-side installation ring (11) to be slidably in contact with the rotation-side installation ring (12) by its tip, rotation-side lips (14, 15) formed on the rotation-side installation ring (12) to be slidably in contact with the stationary-side installation ring (11) by their tips, a pulsar ring (17) formed of a synthetic resin or rubber-like elastic material mixed with magnetic powder on the rotation-side installation ring (12) and multipolar magnetized, and a collar portion (17a) formed on an outer periphery of the pulsar ring (17) at the outer side than the rotation-side lips (14, 15) to closely face the stationary-side member (201) or the stationary-side installation ring (11), thereby an excellent sealing ability being given.

Abstract: A dynamic sealing arrangement for preventing leakage of a fluid along a shaft includes multiple seals and pressurized barrier sealant is presented. According to one aspect, at least three seals are arranged along the shaft with pressurized barrier sealant between the first and second seals and a collection area is provided between the second and third seals to collect any leakage that might occur. Collected leakage, if any, is ported to an output port. According to another aspect, a unitary seal block member is provided that supports the dynamic sealing arrangement for the shaft and defines a piston chamber and a drilled passageway connecting the piston chamber and barrier sealant pressurization chamber between two seals. A substantial amount of plumbing is self contained in a single body minimizing the need for additional components or complexity.

Abstract: The seal for sealing off the bearing interior of a bearing has a first sealing lip angled outward from a base of the seal and forming a first sealing contact, and a second sealing lip angled inward from the base and forming a second sealing contact. An annular chamber is formed between the first sealing lip and the second sealing lip. The first sealing lip has at least one ventilation opening which leads into the chamber from the outside. The ventilation opening is positioned at the first sealing contact.

Abstract: A sealing assembly (1a, 1b) including: a first annular shield (10) presenting a sleeve portion (11) and a flange portion (12) which extends radially from a first end (13) of the sleeve portion; and a sealing member (15) made of elastomeric material presenting an annular root portion (16) which extends radially and overhangingly from a peripheral edge (18) of the flange portion and a first axial annular sealing lip (20) in which the sealing member presents a second radial annular sealing lip (21), the lips (20, 21) axially and overhangingly extending from the opposite side of the first end of the sleeve portion, on a same side as a thinned end (23) of the root portion and being reciprocally spread to form a radial V-shaped section having vertex facing the root portion and axis parallel to the sleeve portion; the first lip presenting a radial seat (32) facing the opposite side of the second lip and accommodating a toroidal spring (33) applying an offset radial stress to an elastic hinge defined by the thinned e

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: 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 sealing system is provided which is intended to achieve an improvement in durability. A dust seal is composed of a first dust seal (100) and a second dust seal (200) which is arranged at a location nearer to an atmospheric air side than the first dust seal (100), wherein each of the first dust seal (100) and the second dust seal (200) has a seal lip formed so as to be slidable with respect to an outer peripheral surface of the shaft. The first dust seal (100) has seal lips (121, 122) made of urethane rubber, and the second dust seal (200) has only a single seal lip (221) which is made of a rubber higher in flexibility than urethane rubber, and which extends toward the atmospheric air side.

Abstract: In order to provide a seal arrangement for sealing between a first medium space filled with a first medium and a second medium space filled with a second medium which ensures reliable sealing between the medium spaces with very low leakage values even over a prolonged period of use, wherein said seal arrangement comprises a moveable component which is displaceable in the longitudinal direction thereof and/or rotatable about the longitudinal direction thereof and extends through the seal arrangement and wherein the seal arrangement comprises a sealing element which comprises a first sealing region that is sealing in relation to the first medium space and a second sealing region that is sealing in relation to the second medium space, wherein the first sealing region comprises a first dynamic sealing section abutting against the moveable component and the second sealing region comprises a second dynamic sealing section abutting against the moveable component and at least one of the two dynamic sealing sections h

Abstract: In a seal system for a scroll type fluid machine, a seal mechanism is provided between a backpressure plate and a holder, so as to surround an orbiting backpressure chamber. The seal member comprises a seal attachment groove, a seal member and a Y-shaped packing. The seal attachment groove is stepped on its outer circumference to define a shallow bottom portion. The seal member includes, on its outer circumference side, a cutout portion matching the shallow bottom portion. The Y-shaped packing is disposed between a deep groove peripheral wall of the seal attachment groove and the cutout portion of the seal member, and a backpressure chamber is defined on a reverse surface side of the seal member. By this arrangement, a slide surface of the seal member can be larger than an effective area of the backpressure side of the seal member. Thereby it is possible to reduce a difference between a load Ff acting on the slide surface and a load Fb acting on the reverse surface.

Abstract: A seal for a reciprocating rod includes an annular body having inner and outer seal lips extending axially from the annular body. The annular body includes a recess including a generally radially extending wall portion and a chamfered axially extending wall surface that is angled relative to a central axis of the annular body. A back-up ring is provided with an angled mating surface such that the backup ring is snap-fit in the recess of the annular body.

Abstract: A resin lip type seal (1) capable of increasing safety against rupture by reducing rigidity of a plate-like lip (4) bent around a tip point A of a approximately wedge-shaped recessed part (8) to reduce stress concentration at the point A, suppressing the lowering of sealability due to a reduction in creep of the lip, and increasing the follow-up capability of the lip to the eccentricity of its axis. Indentations are formed on the slidable contact surface (41) of the plate-like lip (4) or/and the anti-slidable contact surface (42) thereof. Indentations (7) are also formed on the sloped slidable contact surface (21) of the inner lip (2) of the seal. Then, the ratio of the portion of each of the slidable contact surfaces where the indentations (7) are formed is ½ or more of each of the surface areas of the slidable contact surfaces (21, 41, 42).

Abstract: A bearing seal of pack seal type used for a bearing unit rotatably supporting a rotary side member on an inner ring side relative to a stationary side member on an outer ring side.

Abstract: A seal for use between the housing of an automatic transmission and the housing (can) of a transmission drive motor is disposed at each end of the drive motor housing. The seal includes a preferably metal annulus having inner and outer elastomeric ribbed seals secured thereto. The annulus, which defines a non-hardened “S” shape in cross section, maintains the shape and strength of the seal and the ribbed inner seal provides a fluid tight seal with the motor housing while the ribbed outer seal provides a fluid tight seal with the transmission housing.

Abstract: A rotary device comprises a stator and a rotor. The stator has a cam surface. The rotor has a sleeve and a hub. There is a plurality of vanes reciprocatingly mounted on the rotor. There is a plurality of first longitudinal edge seals disposed on the sleeve. The first longitudinal edge seals each seal at least a portion of a first longitudinal edge of one of the vanes against the sleeve. There is a plurality of second longitudinal edge seals disposed on the hub. The second longitudinal edge seals each seal at least a portion of a second longitudinal edge of one of the vanes against the hub. There is a plurality of end edge seals. The end edge seals each seal a respective end edge of one of the vanes against the cam surface. The end edge seals each are in sealing engagement with respective ones of the first and second longitudinal edge seals.

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, comprising a shaft (1) to be sealed, which is enclosed by a radial shaft seal (2), wherein the radial shaft seal (2) comprises two sealing lips (7, 8) for mutually sealing two spaces (5, 6) to be sealed and filled with a medium (3, 4) to be sealed, said sealing lips being disposed axially adjacent to each other at a distance from each other and delimiting a lubricant reservoir (18) with the shaft (1) to be sealed, wherein the first sealing lip (7) is axially curved in the direction of the first space (5) to be sealed in order to seal the first medium (3) to be sealed, and wherein the second sealing lip (8) is axially curved in the direction of the second space (6) to be sealed in order to seal the second medium (4) to be sealed, wherein both sealing lips (7, 8) each have at least one sealing rib (9, 10), which are delimited by mutually intersecting conical surfaces (11, 12; 13, 14), wherein on both sealing ribs (9, 10) the first conical surface (11, 13) facing the first space (5) to be

Abstract: The performance and durability of static and dynamic seals for hydrogen storage and supply systems has been improved by utilizing a spring-energized and plastic coated radial seal in combination with at least a mating surface that has been treated by one of a variety of procedures. These procedures include applying to the mating surface a low-friction, hard, and hydrogen impervious coating, chemically polishing the mating surface, and electrochemically polishing the mating surface. Each of these procedures significantly reduces, on a microscopic scale, the surface roughness of the mating surface. The seal can thus form a tighter and more gas-tight seal with the smoother mating surface so as to decrease the loss of hydrogen gas across the seal. The smoother mating surface can also improve seal life by reducing seal surface wear.

Abstract: An apparatus comprises first and second members that are rotatable relative to each other. The second member is disposed in a circular hole defined in the first member. A main oil seal is disposed between the second member and an inner circumferential surface of the circular hole of the first member. A secondary oil seal is movable along a center line of the circular hole of the first member and is positioned on the opposite side of the main oil seal from the lubricant. A dust seal is positioned on the opposite side of the secondary oil seal from the lubricant. An annular groove is formed on one of the inner circumferential surface of the circular hole and an outer circumferential surface of the second member. The secondary oil seal is movable from a reserve position, which opposes the groove, to a sealing position, which does not oppose the groove.

Abstract: Lip type rotary seal assemblies are generally discussed herein and particularly those with double directional sealing, wherein the tip of the two sealing lips point in opposite directions. A locking ring is incorporated to retain the seal assembly in the housing. The seal is configure to provide different sealing forces at each end to provide flexibility and enhanced performance where two different conditions on each side of the seal can exist, such as different sealing medium, fluid viscosity, pressure, and rotary speed.

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: The bearing seal includes a metal core 1 having a radially outer portion engaged in a seal groove 41 formed in a radially inner surface of an outer race 40 of a bearing at its end portion. The metal core 7 includes a bent portion 2 engaged in the seal groove 41, a radially outer flange 3 extending radially inwardly from an end of the bent portion 2 located inside of the bearing, a tapered tubular portion 4 having a large-diameter end thereof connected to a small-diameter end of the radially outer flange 3 and a small-diameter end thereof located axially outwardly of its large-diameter end, and a radially inner flange 5 extending radially inwardly from the small-diameter end of the tapered tubular portion 4. A rubber seal 11 is fixed to an inner surface of the metal core 1 that faces the interior of the bearing.

Abstract: A pump or valve gasket for a fluid dispenser device, said gasket comprising at least one elastomer and at least one basic inorganic filler having pH that is greater than or equal to 8.

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: To stabilize frictional force to the reciprocating shaft without affecting sealing ability, a sealing device for a reciprocating shaft comprises a main lip 11, a whole periphery of which slidably and tightly contacts with an outer peripheral surface of a shaft 2 reciprocating in the axial direction; and a frictional lip 13, which extends to the sealed space A side from the main lip 11 and slidably and tightly contacts with the outer peripheral surface of the shaft 2 in the state of permitting circulation of sealed fluid, whereby the frictional force of the frictional lip 13 is not varied by pressure of the sealed fluid, while frictional force of the main lip 11 to the shaft 2 is varied by the pressure, the sliding surface is lubricated with the sealed fluid, and reduction of the frictional force by abrasion can be controlled.

Abstract: A sealing device for sealing off an opening between a shaft and a grease-lubricated split bearing housing comprises two halves divided by a diametrical cut and each having a main body arranged in a circumferential groove in the bearing housing opening. The sealing device is provided with sealing lips spaced apart from each other and forming an intermediate grease reservoir, and reinforcing portions arranged between the main seal body and the sealing lips to facilitate sealing engagement between the sealing lips and a shaft when an upper bearing housing half arranged with the upper seal half is mounted onto the shaft while the shaft is resting in a lower bearing housing half arranged with the lower seal half.