Abstract: A sealing ring includes: a lip ring, with at least one sealing lip; and a supporting ring. The lip ring and the supporting ring are connected to one another. The lip ring and the supporting ring each are formed from an elastomeric material. A modulus of elasticity of the lip ring is smaller than a modulus of elasticity of the supporting ring.

Abstract: [Problem] To provide a method for manufacturing a sealing device having high pressure-resistance and high durability.

Abstract: [Problem] To provide a sealing device having high pressure-resistance and durability for a reciprocating shaft. [Solution] A sealing device comprising an oil seal member and a dust seal member. The oil seal member and the dust seal member each comprise a rigid ring provided inside a shaft hole and an elastic ring attached to the rigid ring, wherein the elastic ring has formed thereon a lip for slidably contacting a reciprocating shaft. The sealing device further comprises an intermediate rigid ring provided between the elastic ring of the oil seal member and the elastic ring of the dust seal member, in a direction parallel to the axial direction of the reciprocating shaft.

Abstract: A rolling bearing is provided wherein one open end of a bearing space formed between an outer race and an inner race is covered with a sealing ring provided with oil flow holes provided with filters. The sealing ring includes engaging portions provided on the sealing ring in a protruding manner along a circumferential direction thereof, and engaged in recesses provided on the inner race. An annular member made of a material softer than that of the sealing ring is fixed to the sealing ring. The annular member includes a lip portion facing the outer race with a gap or kept in contact with the outer race. The sealing ring is formed by injection molding a resin, and weld lines generated during the injection molding are formed in portions of the sealing ring corresponding to radial directions along which the oil flow holes are not disposed.

Abstract: A seal arrangement for sealing a propeller shaft where it penetrates through the hull of a watercraft includes a shaft bushing around this portion of the shaft, one or more seal rings forming a seal around the shaft bushing, and a stationary support holding the seal ring or rings. The shaft bushing includes an outer bushing part made of a wear-resistant material, arranged coaxially around an inner bushing part made of a material having a high thermal conductivity. The thickness of the outer part relative to the thickness of the inner part is a ratio in a range from 1:10 to 1:3. The two-part shaft bushing can provide optimized thermal conductivity and heat dissipation away from the seal rings to the cool exterior water environment, as well as optimized wear-resistance, corrosion resistance and reduced friction for the seal rings.

Abstract: A gasket, in particular for a pressurized liquid, includes: a support ring (2) having an axial flange (3) and a radial flange (4); and a PTFE washer (5) arranged on the ring (2), the washer at least partially covering the outer face (3?) of the axial flange (3) and forming a flexible inner sealing lip (6) intended to be applied against an element to be sealed, such as a shaft. The sealing lip (6) includes an annular portion bearing mostly on the element to be sealed and a curved annular connecting portion. The sealing lip (6) has a small thickness (EL), typically less than 0.8 mm, and, in the absence of stress, substantially forms a frustoconical ring or sleeve having a vertex angle of between 40° and 80°.

Abstract: A wear sleeve assembly for a seal on a shaft includes a sleeve having inner and outer circumferential surfaces, the outer surface being engageable by a seal inner surface at a contact location to prevent fluid flow between the seal inner surface and the sleeve outer surface. The sleeve inner surface defines a bore sized to receive a portion of the shaft with clearance. A coupler is configured to connect the sleeve with the shaft and provides a clearance space between the sleeve inner surface and a shaft outer surface at about the seal contact location. Thereby, the sleeve is adjustably positionable relative to the shaft so that the sleeve remains generally centered within the seal as the sleeve and shaft rotate about the axis. The coupler preferably includes an annular body with first and second axially-spaced, relatively displaceable sections for displacing the sleeve relative to the shaft.

Abstract: A radial shaft seal and assembly are provided. The seal has an annular mounting portion and a seal body bonded thereto. The seal body extends to a seal lip extending between an oil-side end and a free air-side end. An annular bridge extends between the seal lip and a central portion of the seal body in radially overlying relation to the seal lip. A primary dust lip extends from the air-side end and has an annular rib configured for sealed abutment with a running surface of a shaft. The annular rib has at least one vent. An auxiliary dust lip extends from the central portion of the seal body to a free end configured for sealed abutment with the shaft. The free end of the auxiliary dust lip has at least one vent spaced circumferentially from the at least one vent in the annular rib.

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 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: 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 pump includes a housing and a shaft rotatable about an axis. The shaft has a shaft diameter and has a portion disposed within the housing. A plurality of retractable vanes is coupled to the shaft and each vane includes a first end that contacts the housing. A seal element is positioned to define a seal between the shaft and the housing. The seal element includes a first bushing, a second bushing, and a dry seal assembly including a wiper that defines a diameter that is smaller than the shaft diameter.

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 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: There is described a seal assembly for sealing the gap between a rotary member and a fixed member, so as to prevent passage of a fluid from a first to a second environment located on opposite sides of the gap; the seal assembly has a first ring integral with the rotary member, a second ring integral with the fixed member, and an elastically deformable sealing member integral with the second ring and in turn having at least one lip cooperating in fluidtight manner with a mating portion of the first ring; and, on the side cooperating with the mating portion, the sealing member has a spiral groove which, in use, produces a fluid-dynamic pumping effect to pump the fluid away from the sealing area and towards the first environment.

Abstract: A fluid seal assembly including a specialized protective filter unit which is adapted for use with a fluid seal, as well as to the combination of a protective filter unit with an associated seal unit to form a complete seal assembly. The seal provides increased reliability, particularly in those specialized seals wherein high internal pressure and the possibility of particulate contaminants are present.

Abstract: An improved rod wiper for excluding dirt and other environmental materials from a linear actuator is described. The annular wiper element includes an outwardly extended lip that is in constant engagement with the front face of the actuator housing. Not only does the lip assist in creating a seal with the housing, it redirects axial forces to have a radial component on the inwardly extended lips of the wiper element in contact with the rod to improve the seal of the wiper element and rod.

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 assembly (10) features an annular carrier (14), an annular shaft seal element (16) and an annular felt washer (18) in an integral assembly that can be installed in one step using a simple push-on tool. The washer (18) is fixed to the carrier (14), such that the carrier (14), shaft seal element (16) and washer (18) are unitized.

Abstract: A vehicle shock absorber is provided that includes a piston rod. A cylinder head having a bore defining an axis supports the rod within the bore. A scraper is arranged proximate to the cylinder head and includes a hole with the rod arranged within the hole. The scraper removes debris from a portion of the rod exterior of the scraper opposite the cylinder head. Preferably, the scraper is axially located and retained relative to the cylinder head by a retainer. A wiper is at least partially disposed in the hole of the scraper and is in engagement with the rod. The wiper removes water from the rod preventing penetration of the water past the wiper.

Abstract: A valve for use with an aerosol container including a valve body, a valve stem having a dispensing passage, and a sealing ring contacting the valve stem. The sealing ring includes a sealing portion. The valve stem is slidably moveable relative to the sealing ring from a valve-closed position to a valve-open position. The interior of the valve body is in communication with the dispensing passage when the valve stem is in the valve-open position. The sealing ring also includes a wiper component to wipe the valve stem. The valve is preferably a metering valve.

Abstract: A shock absorber (2) includes a piston assembly (6) and a damping fluid cylinder (4) having a first end (22) and defining a damping fluid chamber (56). The piston assembly includes a piston (14) mounted to a shaft (8). The piston divides the damping fluid chamber into first and second variable-volume parts (58, 60). At least one restricted flow path is provided between the variable-volume parts of the cylinder, preferably one (18) for compression and one (19) for rebound or extension. A sealing ice scraper assembly (30) is mounted to the first end of the cylinder. The scraper assembly includes a sealing ice scraper sleeve (34) having a generally cylindrical scraper surface (36). A gap of a desired size, typically quite small, is provided between the scraper surface and the shaft. A recess (38) is formed into the scraper surface and houses an outer fluid seal (40) therein.

Abstract: A wiper seal for a hydraulic component is provided. The wiper seal includes a support member with a first leg that has an inner surface, a first end, and a second end and that extends substantially parallel to a reference axis. The support member further includes a second leg that has an outer surface extending substantially perpendicular to the reference axis from the first end of the first leg. The wiper seal also includes a body portion that defines an opening therethrough and includes an outer peripheral surface configured to receive the inner surface of the first leg of the support member. A first radial face extends substantially coplanar with the outer surface of the second leg and a second radial face extends generally perpendicular to the reference axis from the second end of the first leg of the support member. The second radial face includes a cutout defining a first cavity. An inner surface defines a first sealing lip adjacent the first radial face.

Abstract: A seal that is particularly suitable for use in a gas spring (and other high pressure hydraulic and pneumatic sealing applications) and that minimizes leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring. The generally annular seal body includes a radially inwardly facing surface, force directing lobes and either a plastic wiper insert or a wiper lobe that are designed for minimizing the leakage of oil between the radially inwardly facing surface of the seal body and the adjacent, radially outwardly facing surface of the gas spring's piston rod, and that include a corner edge that projects radially inwardly beyond the plane of the seal body's radially inwardly facing surface. When the seal body is compressed for use in a gas spring and is thus subjected to the high-pressure gas, the induced stresses in the seal body result in the corner edge being forced against the adjacent surface of the piston rod to effectively prevent the leaking of oil therebetween.

Abstract: A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland. Compared to prior art, this invention provides a dramatic reduction of seal and shaft wear in abrasive environments and provides a significant increase in seal life.

Abstract: A unitary radial lip seal assembly to provide a fluid tight seal between a shaft and a housing bore through which the shaft extends includes an annular rigid retainer, a resilient body portion secured to the retainer and defining at least one sealing lip to seal against the rotatable shaft and a sleeve bearing member supported by said seal assembly outboard of the sealing lip. In one form the bearing member is rigidly connected to the retainer, in another, it is resiliently mounted to provide shaft vibration dampening. In the latter embodiment, the bearing member includes a radial wall urged into frictional engagement with a radial wall of the resilient body to restrict rotation of the bearing member.

Abstract: A seal that is particularly suitable for use in a gas spring and other high pressure hydraulic and pneumatic sealing applications and that minimizes the leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring or the other applications. The generally annular seal body includes radially inwardly and outwardly facing surfaces and non-concave axial facing surfaces. Lobes for sealing, wiping and directing enhanced forces project radially beyond the planes of the radially inwardly and outwardly facing surfaces. The seal also includes a wiper insert that has a parabolic shaped radially outwardly facing surface and a radially inwardly facing surface, and that is secured in a recess adjacent to the front corner of the seal body's radially inwardly facing surface.

Abstract: A seal that is particularly suitable for use in a gas spring and other high pressure hydraulic and pneumatic sealing applications and that minimizes the leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring or other application. The generally annular seal body includes a number of convex sealing lobes on its radially inwardly and outwardly facing surfaces. All of the sealing lobes have a predetermined radius and project radially beyond the plane of their respective surfaces. The axial facing surfaces of the seal body are generally flat or non-concave. The seal also includes a wiper insert secured in a recess in one corner of the radially inwardly facing surface of the seal body. When the seal body is compressed between the relatively movable, annularly spaced piston rod and cylinder of a gas spring or application, the compression induced stress in the seal causes the seal body and insert to form an effective gas and oil seal.

Abstract: A seal that is particularly suitable for use in a gas spring and other high pressure hydraulic and pneumatic sealing applications and that minimizes the leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring or other applications. The generally annular seal body includes a number of convex sealing lobes on its radially inwardly and outwardly facing surfaces. All of the sealing lobes have a predetermined radius and project radially beyond the plane of their respective surfaces. The axial facing surfaces of the seal body are generally flat or non-concave. The seal also includes a wiper insert secured in a recess in one corner of the radially inwardly facing surface of the seal body. When the seal body is compressed between the relatively movable, annularly spaced piston rod and cylinder, the compression induced stress in the seal causes the seal body and insert to form an effective gas and oil seal.