Abstract: A washer seal for a cam braking system is disclosed that sealingly abuts a bushing assembly and a camshaft. The washer seal is preferably made of a metal washer bonded to a flexible material. The bushing assembly supports the camshaft in the cam braking system. The bushing washer seal is preferably generally ring-shaped having a first ring-shaped flat section defining a bore along a longitudinal axis, a second ring-shaped curved section contiguous with and spaced radially from the first section, and a lip that extends longitudinally from the second section. In a preferred embodiment, the lip extends from the washer seal at an angle from the washer seal second section. In an alternative embodiment, the lip extends from the washer seal at an angle from the washer seal first section. The bushing assembly includes a radially outer surface. The lip of the washer seal deforms radially outwardly to engage the bushing assembly radially outer surface, thereby providing an axial locating feature.

Abstract: A lip type seal (3A) has an annular casing (31), a plurality of seal lips (32, 34) and a rear surface support ring (35) arranged at the rear side. The casing (31) is installed to an inner circumferential surface of a seal installation part (1a) of a shaft hole housing (1) of an equipment through a main gasket (36) made of rubber state elastic material. An inner circumferential part of the seal lips (32, 34) is closely contacted with an outer circumferential surface of a rotary shaft (2). A sub-gasket (41) made of a material having a CO2 transmission coefficient being smaller than that of rubber material is interposed between the rear surface support ring (35) and the shaft hole housing (1).

Abstract: A sealing ring having a sealing body with a dynamically stressed sealing lip made of an elastomeric material which at least partially surrounds a toroidal supporting body. The supporting body has a slope facing the sealing lip, and the sealing body has a dynamically stressed sealing bulge which is adjacent with an axial distance on the side of the sealing lip facing away from the space to be sealed. The sealing bulge is in contact with the face to be sealed under an initial elastic stress. The sealing bulge is arranged axially between two radial planes which axially delimit the slope.

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.

Abstract: A sealing apparatus (20) has a slinger (22) with a substantially L-shaped cross-section including a cylindrical portion (22a) to be fitted on a member of rotational side and an upstanding portion (22b) radially extending from one end of the cylindrical portion (22a). The apparatus also has a core member (23a) of a substantially L-shaped cross-section including a cylindrical portion (23aa) to be fitted in a member of stationary side and an upstanding portion (23ab) radially extending from one end of the cylindrical portion. Further included is a sealing element (23b) including one ore more side lips (23ba) and (23ba) adapted to be slidably contacted with the upstanding portion (22b) of the slinger (22) and one or more radial lips (23bb) adapted to be slidably contacted with the cylindrical portion (22a) of the slinger (22).

Abstract: A fluid seal device for use in sealing an annular space between an internal surface of a cylinder and a member therein having an outer cylindrical surface and being formed at least in part from rubber. An oleamide additive is included in the rubber compound comprising about 1.0%-5.0% by weight of oleamide. The oleamide additive to the rubber of the fluid seal device results in a reduced coefficient of friction and low speed vibration as well as enhanced abrasion resistance.

Abstract: A rotation shaft seal disposed between a housing and a rotation shaft, and provided with a seal member of rubber having a lip end portion which extends as to diminish in diameter to a fluid storing chamber side, wherein the lip end portion has a contact portion which contacts a surface of the rotation shaft and an end face which is facing the rotation shaft, and a concave portion, generating a component of force in diameter direction to raise the lip end portion outward in the diameter direction when receiving pressure in the fluid storing chamber, is formed on the end face.

Abstract: A seal arrangement for a shaft end. The seal arrangement includes an annular sealing lip that before use is braced on a support sleeve. The seal arrangement also includes a sensor ring that overlaps, radially inward with a flange, the sealing lip and the support sleeve, at the end facing away from the sealed space. The sensor ring is axially displaceable with respect to the sealing lip. The support ring includes at least three segments movable relative to one another and abutting against one another in the circumferential direction. The segments are fastened on the sensor ring nondisplaceably in the axial direction and displaceably outwardly in the radial direction. For easier insertion of the shaft end, the support sleeve has at the end facing the sealed space an inside diameter that is expanded in hollow conical fashion, and/or the shaft end has an outside diameter tapered in conical fashion in the opposite direction.

Abstract: A sealing system for a gear reducer includes a compound sealing arrangement disposed in a bore of the reducer housing through which a rotating member extends. The sealing arrangement includes an outboard shielding seal and a inboard lip seal disposed adjacent to one another. The shielding seal includes an annular metallic shield and forms a labyrinth with the rotating member. An elastomeric sealing member is bonded to the shield. The inboard seal provides at least two additional points of contact for sealing the rotating member. The arrangement defined multiple barriers to liquid and solid contaminants and seals lubricant within the reducer housing. Similar arrangements may be provided about several rotating members, and about ends of members extending through the reducer housing, such as an output hub.

Abstract: A ring-shaped low load seal attached into a ring-shaped dovetail groove having an opening portion, a first side wall face, a second side wall face, and a bottom wall face. This seal has a trileaf cross-sectional configuration composed of a first arc portion, a second arc portion, a protruding portion, and a concave portion disposed between the first arc portion and the second arc portion.

Abstract: A radial shaft seal, which includes a ring-shaped, metal supporting body and a sealing lip disposed thereon, in order to separate a hydraulic side that is particularly under high pressure, from an atmospheric side, the sealing lip being pressed onto the shaft by an annular helical spring. In an uninstalled sealing ring, the working plane of the annular helical spring has a value x that is less than zero with respect to the working plane of the sealing edge, and in an installed sealing ring, the two working planes are approximately coplanar.

Abstract: A sealing sleeve made of a polymer material especially for small-dimension installation spaces, the sealing sleeve having a retaining segment and a sealing segment, the retaining segment being connected to a supporting body and the sealing segment on the peripheral side encircling a shaft to be sealed or a barrel ring in a sealing manner under radial biasing and having on the side facing the shaft a surface profiling for recirculating the lubricant, wherein the connecting diameter (interior diameter (D) of the enclosing part (31)) is 1.0 to 1.05 times the shaft diameter (W) plus four times the sleeve thickness (d).

Abstract: A shaft seal, which is pre-stressed by a spring, has a main body element and a projection, which is adjacent thereto. The projection is designed as a sacrificial element which, when the seal is used correctly, abrades because of the friction with the opposite surface and, in the process, polishes the opposite surface. The radial cross-sectional profile of the projection is selected in so that the sealing-lip supporting surface is not substantially enlarged with increasing abrasion of the projection, thereby a predetermined surface pressure at the sealing-lip supporting surface of the projection is essentially maintained over the service life of the seal.

Abstract: A shaft sealing device 50 may comprise a first lip 51 and a second lip 55 that contact a circumferential surface 8a of a drive shaft 8. The first lip 51 may include a movable portion (bendable portion) 53 that extends from a fixed portion 52. A plurality of concave portions (recesses) 54 may be defined around the outer circumferential surface of the movable portion 53. Thin portions 59a are defined corresponding to the concave portions 54. Thick portions 59b are defined adjacent to the thin portions 59a and are preferably thicker than the thin portions 59a. Because of the effect of concave portions 54, the stress of the first lip 51 is reduced when the shaft sealing device 50 is disposed around the drive shaft 8. In addition, because the thin portions 59a and thick portions 59b are intermittently disposed in the circumferential direction on the first lip 51, the pressure of the refrigerant gas within the crank chamber 9 acts upon the space 58.

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

Abstract: A sealing ring, including a support ring made of an impact-resistant material, and a lip ring made of PTFE, where the lip ring has a holding segment and a sealing segment, and where the holding segment is connected with the support ring by an intermediate layer made of a polymer material. The holding segment and the sealing segment are made of two different PTFE compounds, each adapted to their purpose of use.

Abstract: An elastomer seal between a piston and a cylinder or a shaft of an automatic automobile transmission.

Abstract: A rotary facial seal and a thrust bearing are adapted to be installed between inner and outer concentric relatively movable members, such as, the spindle housing and axle of a motor vehicle, the facial seal having an annular diaphragm made up of an inner seating portion mounted on the axle, an outer plastic or PTFE sealing ring with a lip tapering away from a hinged section in a seal body to engage a radial wall of the housing, and an intermediate resilient wall section between the seal lip and seating portion to yieldingly urge the sealing lip into a thin band of contact with the radial wall under the biasing action of the intermediate wall section; and the thrust bearing includes a bearing member which is installed at the inner bore of the spindle housing and is freely rotatable with respect to the spindle housing when engaged by the end of the shaft and inner seating portion of the facial seal.

Abstract: The present seal system is in two parts. First is that of an elastomer energizer, which may be in the shape of a square ring, o-ring, or an other custom design for energizing the seal system. Second is that of a seal element having a particular geometry and composition. The geometric layout of the seal element ensures firm contact between the seal and groove bottom, independently of the seal pressure and radial position of the moving part, and concentrates contact forces against the moving part by means of a seal apex. In the installed state, the seal is forced into contact with the groove bottom by having an outer diameter matching or exceeding that of the groove bottom, and a radial height exceeding that of the housing groove. Further, the influence of the compression ring or energizer is balanced out by positioning the seal apex near the axial position of the center of the energizer.

Abstract: A hydrodynamic seal for location in a seal groove of a structure, such as a housing and for dynamic sealing engagement with a relatively rotatable surface. Elevated contact pressure zones caused by pressure manipulation features located at least partially on the dynamic sealing surface of the seal provide for controlled lubricant movement within the dynamic sealing interface between the seal and the relatively rotatable surface for enhanced lubrication of the seal even when the seal defines a wide sealing footprint with the relatively rotatable surface. The pressure manipulation feature may be defined by projections at least partially from the dynamic sealing lip which are compressed against the relatively rotatable surface or depressions which define pressure manipulating edges which react with the lubricant in the dynamic sealing interface responsive to relative rotation.

Abstract: A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A valve packing comprises a vertically stacked array comprising alternating metal pressure rings and graphite seals.

Abstract: A method and apparatus for maintaining the pressure in an overclad tube at a reduced level despite axial movement of the tube during performance of an RIT overcladding operation. The overcladding tube is held by means of the lathe chuck, and a tubular extension of a rotary union member extends into the tube. The distal end of the extension has a sealing member replaceably mounted thereon which forms a seal with the interior wall of the tube. A vacuum source thus is enabled to connect to the interior of the overcladding tube through the rotary union, the extension tube, and the seal.

Abstract: A self contained anti-blowout seal includes a seal jacket having a static seal surface and a dynamic seal lip with a cavity therebetween. A retaining ring is provided and disposed, in part, within a cavity of the seal jacket and proximate the static seal surface for pressing the static seal surface against a mounting surface. The retaining ring includes a surface extending outside the cavity for bearing against a mounting surface and a depending portion is provided which extends over the cavity opening and includes at least one port communicating with the cavity for enabling a sealing medium to enter and exit the cavity as the seal is pressure energized. A biasing element is provided and disposed in the cavity for forcing the dynamic seal lip against a moving member.

Abstract: A seal arrangement for a shaft having a broad rpm range, supported in a housing, in particular for axle drives. A radial shaft seal, arranged in the housing bore hole, seals the shaft bearing space from loss of lubricant. A baffle plate, joined to the shaft, and having a lip seal, is aligned radially to the inside, which under the effect of centrifugal force lifts off from its sealing surface at higher rotational speeds of the shaft.

Abstract: A seal assembly for use with a rotating element such as a shaft includes a case having an axial portion and a radial portion. A seal body is bonded to at least the radial portion of the case. A hinge is bonded to the seal body adjacent to a terminating section of the radial portion of the case. A lip is bonded to the hinge. A liner is attached to the lip. The majority of bending loads and stresses are incurred in the hinge, thus increasing the life of the liner.

Abstract: Static sealing element (1) for a rolling bearing (2) which is mounted on a cylindrical element (3) which presents a blocking moulding (4) which is positioned against an inner race (5) of the rolling bearing (2) itself and which is suitable for being arranged in contact with a shoulder (6) the sealing element (1) presenting a support (8) which is associated with the inner race (5) of the rolling bearing (2), and a sealing lip (9), which forms an integral part of the support (8) and which presents, in turn, a substantially conical end portion (17), which axially projects in relation to the blocking moulding (4) and which radially forks opposite the blocking moulding (4) itself.

Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.

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

Abstract: A guide roller with a sealing element (14) formed in one piece in a T-shape having a first axial sealing portion (15) that is placed securely onto a shoulder of the inner race, a second sealing portion (16) that extends radially outwardly and is located inside a second groove of the outer race (13), and a third sealing portion (17) that extends radially inwardly branching off from the first sealing portion (15) at its inner end is provided so that axial contact between the shoulder and the outer race (10) is prevented by the third sealing portion (17).

Abstract: Sealing arrangement between relatively rotatable components that includes a first component having a cylindrical circumferential surface on one of an interior and exterior circumference, and a second component having a ring groove open toward the circumferential surface. A ring-shaped carrier is arranged to be displaceable in the ring groove, a centering rod is arranged to guide the ring-shaped carrier on the circumferential surface, and a radial lip seal is arranged to rest against the circumferential surface in an elastic manner. An axial seal is arranged to rest against a side wall of the ring groove, and an anti-twisting device is coupled to the ring-shaped carrier and arranged to enable a limited range of motion in all directions of a radial plane.

Abstract: A composite seal insertable between two relatively rotating members, and including a substantially rigid support for connection to a first of the members, and a flexible sliding sealing element carried integrally by the support and made of a non-elastomeric, synthetic plastic resin, preferably PTFE or similar; the flexible sealing element has at least one annular lip substantially in the form of a cylindrical sleeve and defined by a first lateral surface forming a sliding seal on a corresponding sealing surface of a second of the members; and an annular pressure element, made of an elastomer, is carried integrally by the annular lip on a second lateral surface, opposite the first, of the annular lip, and itself supports a toroidal spring inserted in an annular seat formed in the annular pressure element, on the opposite side to the annular lip.

Abstract: An improved neck seal having an interior surface being concave throughout and shaped to entirely conform to the circumference of a roll surface of a roll. The concave surface further defines the interior side of an oil-side lip extending upwards from the seal body. A portion of the lips outermost end extends radially downward to form a first stop integral with the lip. A portion of the outermost end of the seal body also extends upward from the top surface thereof to form a second stop integral with the seal body. A v-shaped spring is then disposed in a v-groove defined by the inclined bottom surface of the oil-side lip, and the flat top surface of the seal body. In this manner, the first and second stop retain the spring in a position conducive for a more positive seal contact between the lip of the seal and the roll neck without the use of a garter spring.

Abstract: A bypass seal for a rotary regenerative air preheater includes primary and secondary seal leaves that are joined at a single position longitudinally intermediate their first and second sends. The first end portion of the primary seal leaf extends longitudinally beyond the first end of the secondary seal leaf and the second end portion of the secondary seal leaf extends longitudinally beyond the second end of the primary seal leaf. When installed in the air preheater, the first end portion of the primary seal leaf of each bypass seal in one of the seal rings overlaps the second end portion of the secondary seal leaf of an adjacent bypass seal in the seal ring.

Abstract: A lip type seal is provided with an outer ring part (31) which is tightly fitted to a seal installation part (12) of a housing (1); a seal main body (32) which is fixed to the outer ring part (31) and whose inner circumferential part extending in a bent state to the side of a sealed space (A) is sealably brought into slidable contact with an outer circumferential surface of a rotary shaft (2) inserted in the housing (1); a rear surface support plate (33) which is arranged on the rear side of the seal main body and whose outer circumferential part together with the seal main body (32) is fixed to the outer ring part (31); and a movable support plate (34) which is engaged movably in a radial direction between the seal main body (32) and the rear surface support plate (33) and whose inner diameter is clearance fitted to the outer circumferential surface of the rotary shaft (2).

Abstract: In a dust lip structure of an oil seal 20 for oscillation, a thickness of the front end portion of the dust lip 40 is substantially two thirds of an interference A of the first dust lip portion 41 with respect to the rod 13, and an outer diameter of the dust lip 40 is set to be in parallel to each of a front end side taper-like inner diameter portion 43B from the first dust lip portion 41 to a root portion of the second dust lip portion 42 and a base end side taper-like inner diameter portion 44B from the second dust lip portion 42 to the base end portion.

Abstract: A radial shaft seal, which includes a ring-shaped, metal supporting body and a sealing lip disposed thereon, in order to separate a hydraulic side that is particularly under high pressure, from an atmospheric side, the sealing lip being pressed onto the shaft by an annular helical spring. In an uninstalled sealing ring, the working plane of the annular helical spring has a value x that is less than zero with respect to the working plane of the sealing edge, and in an installed sealing ring, the two working planes are approximately coplanar.

Abstract: A joint for a shaft assembly includes a housing fitted with a boot seal that encircles and seals about a stub end of a shaft extending into the housing. The boot seal has a collar-like neck portion whose inner surface is formed with an annular wiper rib. Prior to assembly with the shaft, a shipping plus is disposed in the neck of the seal to guard against the escape of grease and the ingress of contaminants. The wiper rib of the seal is operative to engage and wipe grease from the inserted shank of the shipping plug upon its removal to prevent the grease from accumulating in the neck region and impairing the performance of the seal.

Abstract: A non-contact plastic or rubber seal disk for bearings with improved sealing performance, which can be thrust into the seal groove of the outer ring concentrically with the bearing, with the bearing axis as center, without difficulty and so tightly as to prevent enclosed lubricant from leaking out, with no undesirable force working on the seal disk in service. The seal disk has a peripheral portion to be caught in a ring-shaped seal groove with a U-shaped section, with the peripheral portion of the seal disk in elastic contact with the inner inside wall and the outer inside wall of the groove. The seal groove is formed inside each outer ring, that is, at each end portion of the inside wall of the outer ring of the bearing and comprises an inner inside wall perpendicular to the axis of the bearing, a bottom wall, and an open-out-formed outer inside wall. The seal disk is so configured as to provide a very narrow gap between the bore wall of the seal disk and the inner ring of the bearing.

Abstract: A method of manufacturing a sealing apparatus has an annular sealing lip formed of a resin material, a reinforcing ring having a bent section for nipping the peripheral; end portion of the annular sealing lip, and a sealing portion formed of a rubber-like elastic material and vulcanization formed integrally with the reinforcing ring and the annular sealing lip. Metal rings and a PTFE sealing member which are integrally assembled in such a manner that the inside surface of he peripheral portion of the metal ring is fitted to the outside surface of the peripheral portion of the metal ring to nip the sealing member having a sealing lip portion between the flange portion of the metal ring and the flange portion of the metal ring are integrally held by a rubber formed covering portion composed of an axial end portion, a peripheral fitting portion, a wall portion, a sealing lip portion, and a bonding airtight portion which are continuously formed.

Abstract: A hydrodynamically lubricating seal has a generally circular seal body defining a static sealing surface and having a dynamic sealing lip projecting from the seal body and defining a dynamic sealing surface, a non-hydrodynamic edge and a non-circular angulated flank having a flank angle. The flank angle and the dynamic sealing surface have theoretical intersection being positioned from the non-hydrodynamic edge by a variable distance having a minimum dimension being greater than {fraction (1/16)} inch and also having a maximum dimension. The circular seal body defines a theoretical center-line and, when viewed in a longitudinal cross-section taken along the theoretical center-line, a hydrodynamic inlet curve is shown that blends the theoretical intersection between the flank angle and the dynamic sealing surface. This hydrodynamic inlet curve is tangent to the dynamic sealing surface at a location of tangency and has a rate of curvature less than the rate of curvature of a ⅛ inch radius.

Abstract: The sealing arrangement for a bearing bushing includes a reinforced seal (2) which is arranged in force-fitting manner against the inner wall (4) of the bearing bushing (1). The reinforcement (3) of the seal (2) forms a radially inwardly directed arm (14) for attachment of a rotary shaft seal (8) which is disposed between the arm (14) and the rolling bodies (7). The seal (2) is further provided with a sealing lip (15) which faces away from the rotary shaft seal (8) and is supported by a sealing element (5). The sealing element (5) assumes the function of a protective cap and of anterior seal and includes a reinforcement ring (16) having an arm (17) circumscribing an end zone (19) of the bearing bushing (1). A radially inwardly directed flange (18) of the reinforcement ring (16) is rubberized on an end face. The rubber packing (22) further circumscribes the free end of the flange (18) and is secured in fixed rotative engagement to the pin (6).

Abstract: A radial shaft seal with a sealing disk made of a polymer material which curves towards a space that is sealed as the sealing disk radially approaches a shaft with respect to which it forms a seal. The sealing disk has a first surface profiling on the side facing the shaft and a second surface profiling on the side facing away from the shaft, the first surface profiling being formed by sawtooth recesses arranged adjacent to one another axially at a distance. The first bordering surfaces of the recesses facing the space to be sealed form a smaller angle with the shaft than second bordering surfaces of the recesses facing away from the space to be sealed. The second surface profiling is formed by essentially U-shaped recesses which are open on the side facing away from the shaft and are arranged adjacent to one another with an axial distance between them.

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

Abstract: A sealing arrangement having two machine parts which are moved relative to one another and which enclose a sealing ring, the sealing arrangement having a radially internal retaining part, a radially external sealing part, and a resilient connecting part joining these two. The sealing part is prestressed with respect to the radially outward opposing sealing surface exclusively by the elongation of the holding part while the diameter of the sealing part remains unchanged.

Abstract: A rotary seal is provided that operates hydrodynamically in response to relative rotation even when subjected to exposure to a high fluid pressure from either side, and provides low breakout and running torque. A dynamic sealing lip having a wavy geometry provides hydrodynamic lubrication in response to relative rotation when little or no differential pressure is acting across the seal. When differential pressure exists, controlled fluid pressure-induced distortion results in a distorted dynamic sealing lip configuration that is suitable for hydrodynamic lubrication, regardless of which direction the differential pressure acts from.

Abstract: A fluid seal for installation in a high pressure environment. The seal casing comprises a casing member with an axial flange and a radial flange. The seal includes a rubber lip body and a flex neck section forming a pocket in which a synthetic resinous anti-extrusion insert is trapped. A radial flange of the casing includes on its innermost axial surface a plurality of shallow, spaced apart re-entrant formations, and the anti-extrusion insert in use overlying and covering at least the re-entrant portion of a face of the radial flange.

Abstract: A shaft seal provided with a front seal member, disposed on a fluid storing chamber side and having a lip end portion of rubber which slides on a rotation shaft in rotation state. And the shaft seal is provided with a rear seal member disposed on a low pressure side and having a lip end portion of rubber which contacts the rotation shaft in static state.

Abstract: Coupling and Connecting Means for pipes of the same or different diameters and a seal to be used with such connecting means. The seal being a ring shaped seal made of rubber or other resilient material is composed of two ring parts the first one seated over the second one and connected thereto in a manner which will allow easy disconnecting the second ring from the first ring.

Abstract: A rotor assembly for a laboratory centrifuge includes a rotor body having a loading region encircled by an annular first bearing surface. A lid is configured to be removably secured to the rotor body so as to substantially cover the loading region. The lid includes an annular second bearing surface. Disposed between the lid and the rotor body when the two are secured together is an annular sealing element. The sealing element has a substantially U-shaped transverse cross section and includes an outward facing annular base. An annular first sealing lip projects inward from the upper end of the base and is biased in sealed engagement with the second bearing surface of the lid. An annular second sealing lip projects inward from the lower end of the base and is biased in sealed engagement with second bearing surface of the rotor body. An annular collecting groove is formed on the sealing element between the first sealing lip and the second sealing lip.

Abstract: The present invention relates to a lip-type seal of the outer periphery rubber type having a stationary sealing portion made of rubber on the outer periphery of a reinforcing ring. In view of the fact that there is produced a gap corresponding to the rubber thickness of the stationary sealing portion between the outer periphery of the reinforcing ring and inner periphery of the seal attachment hole, the invention has an object to permit certain supporting of the reinforcing ring by means of a stop functional member by expanding the engagement area engaging with the stop functional member.