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 sealing system for use in a chemical or gaseous delivery system has a delivery tube connected to a source of the material to be delivered and which intrudes into the revolving region where the material is to go. The sealing system has a secondary sealing nut affixed to the delivery end of the tube, and a primary sealing nut mounted on the secondary nut with a sealing member therebetween. When the region revolves, the two nuts are automatically tightened to hold the sealing member in firm and positive engagement with the housing surrounding the region.

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: A hydraulic clutch release system, particularly for motor vehicles has a master cylinder and a slave cylinder, and the slave cylinder has a piston 7 which is annular in form and works inside an annular cylinder 2. The leading end of the cylinder is fitted with a seal 9 which is mounted on a one-piece seal carrier 10a through an undercut part of the carrier in which the seal fits without leaving any empty space.

Abstract: A rotary cartridge seal includes a cold flowable plastic ring having a body for sealably engaging a housing bore and a lip for sealably engaging a shaft rotating within the housing bore. A spring is provided and disposed between the body and the lip for biasing the lip against the shaft and a separable metal retainer is provided for fixing the plastic ring within the housing bore and around the shaft. The separable metal retainer includes a surface of revolution with a rear portion having a radius suitable for press fitting into the housing bore and a front portion of lesser radius ending the ring. An internal groove is provided in the body of the plastic ring for engaging the ring in order to latch the plastic ring and metal retainer together. A spring portion connecting the retainer rear portion and the ring is provided for controlling residual stress in a radial direction within the plastic ring and preventing shrinkage of the plastic ring toward the shaft.

Abstract: A shaft seal assembly includes an outer stationary carrier, an inner member, and a sealing system including a primary lubricant-retention seal that is fixed to the carrier in combination with a number of debris-excluding seal features. Such features include a first debris-exclusion seal fixed to the carrier adjacent the primary seal and a second debris-exclusion seal that is mounted on either the carrier or inner member and has at least one lip sealingly engaging the other of the carrier and inner member in spaced relation to the first debris-exclusion lip defining a sealed annular cavity therebetween. Disposed within the cavity is a porous filter element in the preferred form of an open cell sponge. The various dust exclusion features cooperate to allow each to perform efficiently. The outermost second debris-exclusion seal guards the foam against substantial debris, and the foam in turn protects the first debris-exclusion lip against virtually all debris.

Abstract: The present invention relates to a leaktight seal with a lip capable of gripping a shaft end and being fitted behind a cap. When the cap is in place covering the shaft end and closing the housing, it presses on a stop flange of seal and pushes the lip outwards so that the rotation of the shaft end causes no wear on the seal. When the cap is removed, the housing remains open but the lip grips the shaft end and restores the leaktight seal. This fitting is of particular use for shaft ends fitted with a key slot used for manually rotating a rotating machine during the inspection phase of servicing, the shaft end being driven during normal use of the machine.

Abstract: A sealing device for a roll bearing which includes an outer ring, an inner ring, a rolling element rotatably interposed between the outer and inner rings, and a retainer, comprises a seal holder having a seal holder portion and a seal body attached to the seal holder portion. A portion of the retainer is received in a sealing space defined by the seal holder portion while the portion of the retainer is being disposed outside a range of interference with the seal holder portion. The sealing device further comprises conical surfaces 10 and 19 which are provided as fitting surfaces of a seal holder portion 9a and a seal body 17 fit to the seal holder portion 9a. Accordingly, a space 23 into which one end of a retainer of the bearing is receivable can be formed, and the inside diameter d of the seal holder portion 9a can be reduced.

Abstract: An annular wear sleeve for a shaft seal is fabricated of an elastically deformable metal material and includes an annular body portion and an end flange portion. The sleeve is slightly oversized relative to the shaft on which it is installed to provide a low force slip-fit installation on the shaft. Once installed, the end flange is elastically deformed, imparting a radially inward bending force on the body portion causing the inner surface of the wear sleeve to constrict about and engage the outer surface of the shaft, providing intimate metal-to-metal contact therebetween to dissipate heat from the seal member and to secure the wear sleeve against rotation on the shaft in service. Releasing the deformation force on the end flange enables the wear sleeve to recover its elastic deformation, causing the wear sleeve to release the constricting engagement with the shaft enabling it to be dismounted from the shaft with low force in the same manner as was required for installation.

Abstract: When a seal (10) with a lip (10A) is slid onto a shaft (14), the seal (10) is first slid from a D-cut portion (14C) to the end of a shaft body (14B) contiguous to the D-cut portion (14C), and then is slid at a first speed (at 40 mm/s) from this end to a position in which the seal (10) does not come into contact with a large-diameter portion (14A) of the shaft (14). Since there is a strong possibility that the lip (10A) of the seal (10) will have been completely curled at this time, the seal (10) is pulled out at a second speed (at 10 mm/s) on the shaft body (14B) from this position toward the D-cut portion (14C), and the seal (10) is again slid inward at a third speed (at 70 mm/s) from this position to an appropriate position. Thus, the seal (10) is slid without the lip (10A) being curled. The sliding operations at the second and third speeds may be performed a plurality of times.

Abstract: A seal device for the rolling bearing has an inner seal lip which never turns over when the inner seal lip with its tip end edge separated from the outer peripheral surface of the cylindrical portion of the slinger is fitted onto the cylindrical portion of the slinger, so that the inner seal lip is not resiliently deformed, or very little resiliently deformed while the tip end edge of the inner seal lip is fitted onto the cylindrical portion of the slinger.

Abstract: A hub seal for installation on the wheel end of a heavy duty trailer or truck is disclosed which includes an annular casing, an elastomeric sealing ring supported within the annular casing and including an axially extending sealing lip, an annular sleeve mounted coaxial with the annular casing, the annular sleeve having an axially extending sealing surface, and a spring for biasing the axially extending sealing lip against the axially extending sealing surface such that a substantial portion of the sealing lip is in sealing engagement with the sealing surface over a substantial contact area.

Abstract: A rolling contact bearing has a rotating unit to be integrally assembled to a rotating race (11) of the bearing, comprised of a first metallic annular insert (19) which forms a substantially disc-shaped radial wall (22) and a non-rotating unit to be integrally assembled to the non-rotating race (10) of the bearing, comprised of a second metallic annular insert (15) which has a sealing covering (14) with at least one sealing lip (18) suitable for sliding against the axially inner side of the disc-shaped wall (22); the rotating unit forms at least one substantially radial rotating surface (25) of a given minimum diameter (DR) and the non-rotating unit forms at least one substantially radial non-rotating surface (25) with a maximum diameter (DS) lesser than the minimum diameter, where the units are reciprocally positioned in such a way that the rotating surface (25) is facing the non-rotating surface (23a) from an inner axial position to form an axial stop for the non-rotating surface (23a), so as to provisional

Abstract: A cartridge seal stack utilizes a plurality of rotary cartridge seals each including a cold flowable plastic ring having a body for sealably engaging a housing bore and a lip for sealably engaging a shaft rotating within the housing bore. A spring is provided and disposed between the body and the lip for biasing the lip against the shaft and a separable metal retainer is provided for fixing the plastic ring within the housing bore and around the shaft. The separable metal retainer includes a surface of revolution with a rear portion having a radius suitable for press fitting into the housing bore and a front portion of lesser radius ending the ring. An internal groove is provided in the body of the plastic ring for engaging the ring in order to latch the plastic ring and metal retainer together.

Abstract: The present invention relates to a sealing device for rotating shaft, intended to prevent leaks of a lubricant medium at a bearing supporting the shaft of a machine, this device including, for this purpose, between stationary parts and rotating parts of the machine, a seal carrier mounted in sealed manner on a stationary part, this seal carrier carrying at least one first annular seal surrounding the shaft and provided with a flexible sealing lip capable of providing sealed contact with a rotating bearing surface integral with said shaft.

Abstract: A unitized oil seal assembly (20, 220, 320,420) has a sealing disk (34, 234, 334, 434) fabricated of a single water of PTFE-based material that is split along its radially outer edge to define a pair of split sections, one of which (48, 248, 348, 438) is fixed to an outer annular carrier member (30, 230, 330, 430) and supports the other split section (50, 250, 350, 450) and an unsplit section (52, 252, 352, 452) in sealing engagement with corresponding sealing surfaces of a wear sleeve (32, 232, 332, 432) to exclude contaminants and retaining lubricant, respectively, from passing by the seal assembly (20, 220, 320, 420).

Abstract: A method of forming a metal-to-metal seal in high pressure applications with low contact stress. Firstly, providing a first elongate pressure containment member having a surface of revolution. Secondly, providing a second elongate pressure containment member having an exterior surface, an interior surface, a remote end, and a thin walled extension sleeve having a first end and a second end. The first end of the thin walled extension sleeve is conjoined with the second elongate pressure member at the remote end. The second elongate pressure containment member is of a greater thickness than the sleeve. Thirdly, coupling the first elongate pressure containment member and the second elongate pressure containment member with the sleeve positioned in close relation to the surface of revolution.

Abstract: A seal for movable structural components, like piston rods or shafts, includes a carrier body made of thermoplastic material and a sealing member locked to said carrier body and made of polytetrafluoroethylene (PTFE) material. A form-lock connection is achieved by an undercut which is formed permanently in the sealing member and filled with plastic material of the carrier body.

Abstract: A radial seal useful in linear ball bearings and designed to be secured during transportation as well as during operation of the bearing includes an arcuate disk portion having opposite sides. An arcuate projection is provided on each side of the disk portion, at least one of which is axially oriented. The projections are designed to have different diameters. This produces a stepped seating surface along the outside diameter of the radial seal that effects a reliable seating of the radial seal in the linear ball bearing. The radial seal can also be designed with two axially oriented projections disposed at different diameters on one side of the disk portion for projecting into an annular groove on the frontal face of the outer ring of the linear ball bearing. By constructing the projections with circumferential outer faces that slightly diverge in a cone-shaped manner, the projections further inhibit the seal from falling out of the groove.

Abstract: The present invention relates to a sealing device for rotating shaft, intended to prevent leaks of a lubricant medium at a bearing supporting the shaft of a machine, this device including, for this purpose, between stationary parts and rotating parts of the machine, a seal carrier mounted in sealed manner on a stationary part, this seal carrier carrying at least one first annular seal surrounding the shaft and provided with a flexible sealing lip capable of providing sealed contact with a rotating bearing surface integral with said shaft.

Abstract: A device is provided for sealing a rotor shaft supported on a bearing mounted in a housing of an appliance for compressing or expanding a fluid containing, apart from the housing, at least one rotor mounted therein. The sealing device is situated between the rotor and the bearing around the rotor shaft and includes at least two zero contact or frictionless seals. The sealing device successively includes between the rotor and the bearing a first zero contact seal; a double, reverse lip seal with two lips; and a second zero contact seal. The two lips are partly directed towards one another and partly directed towards the rotor shaft along their backsides. An entry for fluid under pressure opens between the lips, whereby the lips, depending on the pressure between them, are in contact with to the rotor shaft or are lifted from the rotor shaft.

Abstract: A rotary shaft seal having an elastomer seat for fitting into the bore of a hub or for the attachment onto a shaft comprises a seal washer, connected to a metal enforcement ring through a elastomer intermediate layer. The elastomer intermediate layer consists of a material having a chemical endurance comparable to that of PTFE, in particular of fluorocaoutchouc, and has a thickness of less than 0.5 mm, preferably in the range of 0.05 mm to 0.5 mm. This intermediate layer connects the seal washer with the enforcement ring according to a method according to the invention by simultaneously vulcanization with the elastomer seat on the outer side of the enforcement ring, wherein the injection pressure acting during injection and vulcanization is kept away from the intermediate layer.

Abstract: A hydraulically controlled disconnect system for a friction clutch of motor vehicles is provided and is constructed as a slave cylinder which includes a pressure housing (2) which is arranged concentrically in relation to a gear box input shaft (3). A guiding sleeve is arranged radially apart from the pressure housing to create a circularly configured pressure chamber (9) in which a ring piston (7) is axially guided and movable. A reinforced seal (8a) on the pressure chamber side of the ring piston (7). The seal (8a) includes sealing lips (14, 15) which are arranged radially spread apart. In accordance with the invention, the reinforcement (18a) of the seal (8a) is held form-locking on the ring piston (7) with a degree of axial and radial freedom.

Abstract: A radial shaft sealing ring has at least one dynamically stressed first seal and at least one statically stressed second seal. The first and second seals are connected to a support ring having a centering seat that is placeable into a housing bore. The support ring has an axial projection which at least partially covers the second seal so as to limit its elastic deformation, and may further contact a housing to be sealed.

Abstract: A bearing seal includes an annular body in sealing contact with the outer race of a bearing. The annular body includes a sealing resilient annular member fitted on a shield portion and projecting from the shield portion to contact in a sliding and sealing manner a sealing surface spaced apart from the bearing. The annular body is attachable to the outer race ring of the bearing by way of an annular bulge provided on the resilient member. The annular bulge is attachable by snap-action in a circumferential groove in the inner surface of the outer race ring of the bearing.

Abstract: A sealing assembly for a pump shaft, having a metal supporting structure, and a sealing ring in turn having a main sealing lip and a secondary lip, which extend axially in opposite directions and define an annular cavity together with a lateral surface of the shaft. When undeformed, the diameters of the two lips are such as to respectively determine a predetermined amount of interference and a radial clearance with the shaft. The sealing ring is so formed as to be deformed elastically by the interference fit between the main lip and the shaft, so as to cause the secondary lip to cooperate with the shaft with substantially no interference.

Abstract: A device for sealing connecting two assembly parts (1, 2) that are movable relative to one another, especially between two damper blades or one damper blade and one stop of a flue gas fitting, containing an elastic sealing element (5), which contains two clamping edges securable to an assembly part, as well as an arched sealing zone (10). The sealing element (5) is externally surrounded in overlapping fashion over a portion of its axial length by a plurality of close-fitting holding collars (3) made of spring steel, and the holding collars are secured to the supporting element (8) in the area of the edge of the supporting surface (15) directed away from the two clamping edges (6, 7) of the sealing element (5) in the vertical direction relative to the supporting surface.

Abstract: A sealing ring seat disposed in a housing. The seat has an inner lateral surface, against which an external surface of an elastic outer ring of the sealing ring is intended to lie. The lateral surface of the seat has a peripheral groove with a sharp edge which secures the sealing ring against being pressed out of the seat when there is overpressure in the housing.

Abstract: A rotary cartridge seal is provided which includes a cold flowable plastic ring having a body for sealably engaging the housing bore and a lip for sealably engaging a shaft rotating within the housing bore. A separable metal retainer is provided for fixing the plastic ring within the housing bore and around the shaft with the separable metal retainer having a surface of revolution with a rear portion having a radius suitable for press fitting into the housing bore and a front portion of lesser diameter ending therein. An internal groove is provided into the plastic ring body for engaging the ring therein in order to latch the plastic ring and the metal retainer together with residual stress in both the axial and radial directions within the plastic ring due to groove and ring dimensions and shape.

Abstract: A sealing arrangement in which a rotary shaft lip seal is arranged in a housing bore hole under radial prestressing. The lip seal has a sealing lip sealingly surrounding a shaft to be sealed. The sealing lip is arranged on a first, radially inwardly pointing leg of a thrust ring made of tough material. An axially extending second leg of the thrust ring is provided with a coating of elastomer contiguous with the sealing lip on its radial exterior that is also under radial prestress when positioned against the wall delimiting the housing bore hole. A roller bearing is arranged in the radial direction between the second leg and the shaft, and the sealing lip is arranged in the axial direction on the side of the roller bearing and the first leg facing the space to be sealed.

Abstract: A two-piece cartridge-type seal for wheel bearings and the like. The seal element contains a radial flange having a seal attached thereto and a mounting flange portion. The wear sleeve portion includes a cylindrical flange receivable over a rotary part, and a radial flange having an extension with an inner surface which engages a part of the seal during installation only. In use, the radial flange of the wear sleeve is engaged by a tool, and this radial flange deflects slightly to push the seal element into a desired position of installation, whereupon, when the tool is removed, the radial flange springs back and creates a slight working clearance between these parts.

Abstract: A lip seal for use in low torque, high pressure applications including a rigid retainer, a resilient body essentially covering the retainer and an inner support member. The inner support member provides spacing and orienting functions for the other elements. The inner support member has a radial dimension and outer diameter smaller than the inner diameter of an outer axial wall of the retainer so that a gap is maintained between the retainer and the inner support member under a variety of pressure, torque and shaft deflection conditions. Gap maintaining elements, preferably in the form of axially extending guides, prevent contact between the rigid seal elements. The guides may further comprise nub portions at one end which contain the inner support member in the cavity prior to installation on the shaft.

Abstract: A volumetric pump for administering intravenous fluids to a patient comprises a housing having an elongate cavity therein with an open and a closed end. A resilient sheet of material having a centrally-located aperture covers the open end, and a pump shaft is slidably disposed through the aperture to form a sphincter seal therebetween. An inlet conduit leading from a fluid source (an IV bag) passes through the housing into the cavity near the open end thereof, and an outlet conduit leading to a fluid sink (the patient) passes through the housing from the cavity near the closed end thereof. The shaft is driven back and forth in reciprocating motion inwardly and outwardly of the cavity to produce, respectively, a positive pressure forcing fluid out of the outlet conduit to the fluid sink, and a negative pressure forcing fluid from the fluid source through the inlet conduit.

Abstract: A two-piece valve stem guide allows the guide to be reamed in-place without damaging an installed valve seal. A first section of the guide is press fitted into an axially extending bore of an internal combustion engine component. Next, a multi-piece seal comprising a metallic retainer, elastomeric seal element and optional spring is inserted into the bore. Then a second section of the stem guide is partially installed into the bore. The two sections are reamed to create a common inner radial diameter that is adapted to receive a valve stem. Finally, the second section is pressed axially downward, engaging the seal and forcing the elastomeric seal element radially inwardly until it comes into contact with an installed valve stem.

Abstract: An outboard seal between a rack bar of a rack and pinion steering gear and a fluid motor cylinder tube around the rack bar. The outboard seal includes an annular bulkhead in an outboard end of the cylinder tube around the rack bar, a metal retaining ring preventing dislodgment of the bulkhead from the cylinder tube by fluid pressure in the cylinder tube, and a seal ring adjacent an end wall of the bulkhead having an outer surface resiliently pressing against the cylinder tube and an inner lip biased against the rack bar by garter spring. A coupling between the seal ring and the bulkhead consists of an annular groove in a cylindrical shoulder on the bulkhead and a flexible lip on the seal ring stretched over the cylindrical shoulder and seated loosely in the annular groove.

Abstract: When the annular seal 11 which provides sealing around a shaft 1 is damaged, something which is signalled by an oil leak, the axially mobile seal carrier 10 is pushed to the left, with the aid of the lug 13, to bring an additional seal 12 into service, this making it possible to eliminate the leak without any dismantling. This operation can be brought about by a jack and can be automated.Application to all rotating shafts.

Abstract: An annular oil lip seal extender is used to axially reposition a conventional lip seal with respect to a rotating shaft after a wear groove is formed by the rubbing interaction between the lip seal and shaft without the need for a new seal, a new or reground shaft, the use of unreliable thin walled sleeves that fit over the shaft, or overly complicated assemblies that are prone to failure. The extender can be press fitted into the seal and the sub-assembly installed into a conventional housing bore. Alternatively, the extender can be loose fitted into the housing bore and the seal press fitted between the extender and the circumferential extending wall of the housing bore.