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: To enable to use a lip type seal at installation positions where shaft diameters are same but shaft hole diameters are different, an installation structure is made such that a lip type seal (1) is installed to an inner periphery of a shaft hole (72) via a cartridge (51) arranged at an outer peripheral side of the lip type seal, the cartridge (51) has a large-diameter tube portion (54) and a small-diameter tube portion (52) via a step portion (53), and is fitted to the inner periphery of the shaft hole (72) by an outer peripheral surface of the large-diameter tube portion (54), while the lip type seal (1) is fitted to an inner peripheral surface of the small-diameter tube portion (52), and only a diameter of the large-diameter tube portion (54) is set in conformity to a diameter of a shaft hole to be installed.

Abstract: A valve stem seal utilizes a multi-piece construction to reduce the required manufactured tolerances and/or improve the stress handling capabilities. The valve stem seal can include a first member or can which can be assembled to a second member or spring seat. The can and/or spring seat can have a plurality of axially extending resilient fingers that are biased such that when assembled the fingers are bent against the bias due to the engagement between the can and the spring seat. The fingers on the spring seat allow the spring seat to bend or move relative to the can to accommodate the loading of a valve spring on the spring seat. The use of resilient fingers on the can and/or the spring seat reduces the manufacturing tolerances required for the valve stem seal.

Abstract: The invention relates to a sealing element at least comprising a housing area, at least one dynamically active sealing area and at least one statically active sealing area which at least partially interacts with the housing area. The invention is characterized in that the static sealing area is at least partially laminated with a hardenable material containing a predetermined number of friction-reducing elements.

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 seal cover includes a cylindrical part which is fixed to an outer peripheral surface of an axle, a flange part which is opposed to an end surface in an axial direction of a housing, interposing a small clearance, and a deflector part which is opposed to an outer peripheral surface of the housing, interposing a small clearance. A passage through which muddy water or the like arrives at an annular clearance from an exterior of a vehicle can be formed of the small clearances, and the passage can be made long. Because an overlapping amount between the deflector part and the outer peripheral surface of the housing can be secured, the muddy water or the like which has been splashed by a wheel and flowing from an outer peripheral side of the housing to an inner peripheral side can be made difficult to intrude into a space.

Abstract: A flexible, resilient seal protects a bearing in a pitch joint of a helicopter blade assembly from contaminants. The seal includes a flexible, resilient body having a first end bonded to a stationary portion of the joint, and a second end biased into sealing engagement with a displaceable portion of the joint. The body includes an intermediate bellows section surrounding the bearing that expands and contracts to accommodate displacement between the stationary and movable portions of the joint. The second end of the seal includes a lip that rubs on a sacrificial wear layer formed on the second portion of the joint.

Abstract: A shaft seal that is in sliding contact with the outer surface of the shaft of an open type compressor or a fluid device driven by an external power source and seals the inside of the compressor or of the fluid device against the outside. At least a sliding section of the shaft seal, which sliding section is in sliding contact with the outer surface of the shaft, is made from a material into which a substance having a melting point in the range of 150-300° C. is added and uniformly dispersed. The shaft seal can improve its thermal resistance and abrasion resistance, can exhibit excellent durability, and is particularly suitable for compressors using a carbon dioxide refrigerant which are driven under high-temperature, high-pressure conditions.

Abstract: A seal includes a supporting body; a disk-shaped sealing element fixed to the supporting body so as to form a static seal and to include a free end; and a sealing body disposed at the free end so as to form a dynamic sealing edge, wherein the sealing body includes a material that is a different from a material of the sealing element.

Abstract: A rollback seal, which is used in a space between a piston and a housing of a hydraulic brake configured to brake a wheel by clamping a disc rotor fixedly attached to the wheel, is arranged in an annular groove of the housing, has a substantially rectangular sectional shape, has an annular recess formed in one end face thereof at the side where hydraulic pressure acts on the piston, and has a chamfered section formed at a piston side corner of the other end face thereof at the opposite side to that where the recess is formed, thereby to reduce total weight of brake system, secure sufficient amount of rollback at low temperature, and reliably return a piston from brake position to release position with improved sealing characteristics over a longer service life.

Abstract: A shaft seal includes an elastomeric annular body having a radially inwardly protruding annular lip. An annular outer case receives the elastomeric annular body. An annular inner case is embedded into the elastomeric annular body. An annular insert is positioned adjacent the inner case. A backup/support insert is received in a recessed pocket in the elastomeric body and outboard of an axially extending annular bead protruding from the body and compressed sealingly against the radially inward extending leg of the seals annular outer case. The backup/support insert and axially extending annular bead act to prevent sealed fluid pressure from acting against a rind portion of the elastomeric body thus leaving outwardly extending beads of the rind portion free to compress or decompress to accommodate eccentric deflection of the shaft. The outer case, the insert, the backup insert and the inner case support the lip and compensate for shaft offset.

Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: A compressor comprises: a cylinder with a compression space; a suction port and a discharge port which communicate with the compression space in the cylinder; a support member which closes an opening of the cylinder; a rotary shaft which is rotatably supported on the support member; a compression member whose one surface crossing an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and which is rotated and compresses a fluid to discharge the fluid via the discharge port; and a vane which is disposed between a suction port and the discharge port, abuts on one surface of the compression member and partitions the compression space in the cylinder into high and low pressure chambers.

Abstract: A rotation shaft seal to prevent inner leak from increasing along high-pressurization of sealed gas. A staged portion is formed on an outer case, and an end face on an inner side of the staged portion is covered with rubber to form a ring rubber portion of which end face is covered. A rubber end face of the rubber portion and a face on a peripheral edge of a seal element are pressed to each other.

Abstract: A unitized pinion seal assembly has a seal portion and a sleeve portion that are assembled in an interference fit relationship. The unitized pinion seal assembly is assembled to a carrier/bearing cage and an axle companion flange with proper spacing between non-sealing components, and without a spacer mounted between the two portions.

Abstract: To reduce an installing space and simplify a mounting structure of a sensor (40) of a rotary encoder, a sealing device with a sensor has a retainer (10) having a fitting tube section (11) and an installation flange section (12) expanding outside thereof and fixed to an engine block (2), and a sealing device body (20) fitted to the fitting tube section (11) and slidably contacted with an outer surface of the crank shaft (4), a sensor (40) detecting a rotation of a pulsar ring (30) rotating together with the crank shaft (4) is attached to a sensor installation section (13) in the installation flange section (12), and a pulsar body (32) of the pulsar ring (30) is formed in a cylindrical shape and extends in a circumferential direction coaxial with the fitting tube section (11) between the fitting tube section (11) and the sensor installation section (13).

Abstract: A sealing system for sealing high liquid pressure and containing a wiper lip in either of two forms. The light pressure seal includes a seal casing, a seal body including a lip seal, a snap ring and a plastic back-up ring, and the wiper lip seals on either a radial or an axial surface. The casing may have radial and axial flanges or a radial flange only. The space between the two seals may be filled with grease.

Abstract: The present invention discloses a seal and a method of sealing dynamic shaft applications. The seal comprises an inner portion, an outer portion, a faceplate, and at least one flexible member located between the inner and outer portions. The method comprises providing a dynamic shaft assembly containing a bore for receiving a seal, providing a unitized seal, and placing the unitized seal on the shaft, thus sealing the assembly so that lubricants may not escape, and foreign material may not enter. The unitized seal can provide permanently lubricated sealed bearings in severe service conditions such as rollers and idlers of track-driven vehicles and agricultural equipment.

Abstract: The invention relates to a method of treating the surface of a mechanical part made of high-strength steel, the method seeking to confer on said part friction and lubrication properties that are needed for its use.

Abstract: Seal assembly for sealing a clearance gap between a boundary of an aperture formed in a housing and a member extending through the aperture. The seal assembly comprises a seal member and a seal member mounting means disposed around the sealing member and is configured to engage with the aperture boundary. The seal member mounting means is configured to seal an alignment interspace provided in the clearance gap between the seal member and aperture boundary. The seal member mounting means is configurable to permit the seal member to be located at a position relative to the aperture boundary in dependence upon the relative positions of the member and aperture boundary to thereby accommodate misalignment between the member and aperture boundary. The seal member mounting means is configurable to lock the seal member relative to the aperture boundary in said position.

Abstract: A rolling bearing device of the invention has inner rings, an outer ring, and a sealing unit having a seal case fixed to the outer ring. The seal case is internally fitted to an annular corner formed between a shoulder inner peripheral surface of the outer ring, and a seal groove in a state where the diameter of a fixed portion is reduced elastically, and is fixed to the outer ring in a state where the annular corner and an outer peripheral surface of the fixed portion are in a line contact with each other.

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 seal assembly having a seal bumper wall with a series of pyramid shaped formations lying on the bumper wall. The formations cause their apex portion to wear down rapidly in use, while the remainder of the pyramids remain and act as slingers and/or produce a convection effect to reduce temperature along the sealed area. In another embodiment, there are two each pyramid shaped formations located on each of several thrust bumpers, which are held in position by a retainer.

Abstract: This invention relates to a sealing gasket for providing sealing in a button mounting gap on a furnace body where rotating control members are positioned, the sealing gasket being located in the mounting gap via two contacting surfaces thereof, one facing to the button and other one facing to the furnace body, and comprising a sealing wing, in contact with the wall of the body, a retaining member in contact with the outer surface of the furnace body, and at least one bump form extending towards the control member at the continuity of the retaining member and in the direction of the gasket extension for preventing water from reaching to the control member and furnace body.

Abstract: A unitary cartridge seal assembly for a high pressure liquid sealing connection between two relatively rotatable liquid passage members of a rotary nozzle or a swivel and a tool having such an assembly. The assembly comprises a thimble shaped or cylindrical housing having a flanged retainer fitting within an axial orifice to hold the components together while allowing sufficient axial movement to insure complete sealing of the respective elements. The assembly provides “drop-in” replacement of wearable parts of the rotary face seal of a high pressure water jet blasting tool.

Abstract: A sealing member for forming a seal in an aircraft, the sealing member comprising: a sealing material; and a stiffening element which provides structural support to the sealing material and comprises a material with a glass transition temperature below +50° C. The stiffening element is relatively flexible when the aircraft is at low altitude (high temperature) but becomes relatively stiff (increasing resistance to seal flutter) when the aircraft is at cruise altitude (low temperature).

Abstract: The invention relates to a sealing device for roller bearings, comprising a journal seal (4), which is arranged upstream on the roller-ball side of the annular seal (8) which is connected in a rigid manner to an annular projection (7) of the bearing housing (5). The sealing lip (18) of the sealing device is applied to the front side (10) of the roller (1) by means of a sealing contact. The aim of the invention is to improve the sealing device in such a manner that the sealing lip of the annular seal is barely impinged upon by cooling means mixed by impurities, making it long lasting and ensuring that no undesired water can penetrate into said outlet.

Abstract: A sealing member can include a radially-working lip which contacts a drive shaft in a radial direction to seal a gap between the drive shaft and the housing in the radial direction, an axially-working lip extending in an axial direction, and a contact member which contacts the axially-working lip to seal the gap between the drive shaft and the housing in the axial direction. The contact member can be fitted to the drive shaft to rotate with the drive shaft.

Abstract: A seal arrangement has a mechanical shaft seal with an annular counter member and a slide ring each having sliding surfaces that rest against one another and define sealing gap. The sealing gap has at least one sealing lip correlated therewith. The sealing lip is arranged downstream or upstream of the sealing gap.

Abstract: A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal.

Abstract: A rotary tablet press, with a rotor driven by a driving motor, which has a die plate as well as an upper and a lower guiding for upper and lower punches, which co-operate with bores of the die plate, a stationary housing closely surrounding the rotor, which constitutes a pressing room, and with at least one ring-shaped sealing arrangement, which seals the housing against a punch guiding, wherein the sealing arrangement has a ring-shaped holder inside the housing, wherein the ring-shaped holder is axially movable between a first and a second position by means of a stationarily arranged lifting device, the sealing arrangement has a first sealing portion, which is continuously in engagement with a first sealing surface of the housing in the first and in the second position, and a second sealing portion which is in engagement with a second sealing surface of the punch guiding with a first sealing force in the first position and is in engagement with the second sealing surface in the second position either with a

Abstract: A compressor having a compression element with a cylinder in which a compression space is constituted, a suction port and a discharge port which communicate with the compression space in the cylinder, a support member which closes an opening on the cylinder and a rotary shaft which is rotatably supported by a main bearing as a bearing formed on the support member. A compression member, whose one surface crosses an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and is disposed in the cylinder to be rotated by the rotary shaft, compresses a fluid sucked from the suction port to discharge the fluid via the discharge port. A vane which is disposed between the suction port and the discharge port to abut on one surface of the compression member partitions the compression space in the cylinder into a low pressure chamber and high pressure chamber.

Abstract: A rotation shaft seal provided with a rubber sealing portion which contacts a surface of a rotation shaft and an outer case to which the rubber sealing portion is unitedly fixed. The outer case has an inner brim portion on an inner end portion on a sealed fluid side. The inner brim portion is covered by the rubber sealing portion. A sliding portion is disposed on an axis-orthogonal face including the inner brim portion.

Abstract: A sealing device with a rotation detecting element, capable of detecting rotation even when fluid such as engine oil is an object to be sealed, comprises a stationary side sealing element (seal ring) (12) fixed to the stationary side (3), a rotation side sealing element (slinger) (14) installed on the rotation side (2) and made to be in slidably and hermetically contact with the stationary side sealing element (12), and a to-be-detected disc (15) for rotation detection attached to the rotation side (2) and positioned at the atmosphere side from a sealing and sliding section (S) between the stationary side sealing element (12) and the rotation side sealing element (14), wherein the outer peripheral edge of the to-be-detected disc (15) closely faces in the radial direction the stationary side sealing element (12) side.

Abstract: Hole-sealing cover wherewith, while securing space for a moving part such as the end of a suspension arm, the size of a hole in a member being attached to can be made small. The hole-sealing cover is shaped so that it can be inserted into a hole in a bracket, includes a vessel-shaped main cover body which has a space for an end to move in formed inside, and a flange, formed at the peripheral edges of the main cover body, for preventing excessive insertion, in which main cover body, at the top part thereof forming a vessel-shaped bottom surface, a hinge is formed which extends, crossing the top part linearly, which hinge exhibits elasticity wherewith the width in a direction crossing the hinge can be reduced by a pressing force and wherewith the width is restored to the original width when the pressing force is released.

Abstract: A brush seal for sealing a rotor with respect to a stator includes a bristle housing which is held on the stator or rotor, a cover plate, a supporting plate, a circumferential surface and two side surfaces and in which bristles oriented with their free ends to the rotor or stator are fastened. The bristle housing, for ensuring correct, anti-rotation installation in its seat, includes a first positioning arrangement on at least one side surface or the circumferential surface, the first positioning arrangement interacting in a positive-locking manner with a correspondingly configured second positioning arrangement on the stator or rotor or a separate fastening element for the definite positioning of the bristle housing.

Abstract: A sealing device is to be fitted at a side of a bearing unit in order to seal a gap (15) between a stationary race (11) and a rotatable race (10) of the bearing unit. The device includes a relatively rigid reinforcing insert (16) of disc-annular shape, and a gasket (17) of relatively soft rubber or elastomeric material, over-moulded or vulcanized onto the insert (16). The gasket forms two opposite peripheral sealing portions (18, 19) intended to perform a static sealing action against the rotatable race (10) and a dynamic sealing action on the stationary race (11), respectively. The insert (16) includes magnetized or magnetizable material for forming, at predetermined angular zones or fields, a sequence of alternate and/or spaced north/south poles, in order to act as an encoder.

Abstract: A shaft seal for forming a dynamic seal along an axially extending annular running surface and method of installation thereof is provided. The shaft seal has a mounting portion configured to be connected to a stationary housing and a seal lip having an annular sealing surface extending between an oil side end and an air side end of the seal lip. The sealing surface is configured to extend axially along a shaft running surface. An annular bridge portion connects the seal lip to the mounting portion. A plurality of webs extend generally radially between the bridge portion and the mounting portion to prevent the seal lip from being inadvertently unfolded during installation or while in use. An annulus can be used to install the shaft seal into a housing and about a shaft without the need for secondary operations.

Abstract: Disclosed is an improved sealing element for a regenerative heat exchanging apparatus, such as a Ljungstrom™-type or a Rothemuhle™-type Preheater. The sealing element is mounted to a radial wall to provide a secure seal between the radial wall and an outer housing of the heat exchanging apparatus and prevent leakage between the hot gas conduit and cool air conduit. In one embodiment, the sealing element includes a reinforced mounting strip that is used to mount the sealing element to the radial wall. The sealing element also includes a sealing strip that maintains a sealing contact between the radial wall and outer housing and a support member that inhibits over-flexing of the sealing element. A set of bellows is positioned on the sealing element to provide the sealing element with flexibility and resiliency so that the sealing element maintains contact with the sealing surface even when the heat exchanging apparatus experiences warping and/or distortion from thermal stress.

Abstract: A rotation shaft seal provided with a rubber sealing portion which contacts a surface of a rotation shaft and an outer case to which the rubber sealing portion is unitedly fixed. The outer case has an inner brim portion on an inner end portion on a sealed fluid side. The inner brim portion is covered by the rubber sealing portion. A sliding portion is disposed on an axis-orthogonal face including the inner brim portion.

Abstract: A sealing device includes an inner race, an outer race capped on and rotatable relatively to the inner race, a rubber oil seal mounted between the inner race and the outer race, a lubricating oil received between the inner race and the outer race, radiation holes formed in the outer race, and a spoiler provided between the inner race and the outer race for causing convection of the lubricating oil to lower the temperature of the lubricating oil upon rotation of the outer race relatively to the inner race.

Abstract: A roll stub is rotatable relative to a stationary support and has a rotatable support fixed to the roll stub, an annular and radially directed seal surface fixed on one of the supports, and a seal ring on the other of the supports having a lip engageable with the seal surface. A support element that is substantially less stiff than the seal ring is provided between the other support and the seal ring for biasing the lip against the seal surface while permitting of the seal ring relative to the other support. A clamp body rotationally fixed to the other support directly engages the seal ring and presses the seal ring directly against an abutment. Interengaging tooth formations on the clamp body and on the seal ring arrest the seal ring on the other support against angular movement thereon while permitting relative radial movement.

Abstract: Advantageous seal systems are provided that include a barrier member movable relative to a shaft to allow sequential engagement of resilient seal members, e.g., lip seals, with the shaft. Movement of the barrier member may be effected manually or through introduction of pressurized fluid to effect piston-like movement. The disclosed seal assemblies may include an automatic leak detector and may utilize such leak detection to effectuate automatic movement of the barrier member. The barrier member may be moved relative to the shaft while the shaft is in movement, e.g., rotating or reciprocating, thereby permitting seal maintenance without interruption in operation. As seal members are sequentially brought into sealing engagement with the shaft, the previously engaged seal members contribute to the sealing performance of the seal assembly, although no longer effective to establish a stand-alone seal with the shaft. Front and rear bushings may be provided within the seal system.

Abstract: The lip-type seal of the present invention is a lip-type seal with which the outer periphery of a rotational shaft (S) supported by a predetermined housing (H) is sealed. The lip-type seal is made up of a first annular reinforcing member (11) and a first sealing member (12). The first reinforcing member (11) includes a wall surface part (11a) defining a hole through which the rotational shaft (S) is passed and a cylindrical part (11b) bent from the outer edge of the wall surface part (11a). The first sealing member (12) includes an annular base (12a) that is joined to the housing (H), a first lip part (12b) that extends almost conical from the base (12a) inwardly in the radial direction and that comes into contact with the rotational shaft (S), and an annular concave part (11c) formed on the base (12a) so as to detachably fit the cylindrical part (11b). Accordingly, a desired sealing capability can be secured, and the components can be easily assembled, disassembled, and recycled.

Abstract: A shaft seal/position sensor module assembly includes a carrier body that is mountable on a shaft housing about an opening through which a rotatable shaft extends. A sleeve is mountable on the shaft and carries a multi-pole encoder ring having a radially outwardly facing sensor surface. A magneto-resistive sensor is mounted on said carrier body in position to communicate with said sensor surface of said encoder ring.

Abstract: A seal assembly provides a seal between a housing member and a shaft member extending through a bore formed in the housing member. The seal assembly comprises a seal member mounted to the housing member within the bore and about the shaft member and extending radially inward therefrom, an axially extending seal sleeve member provided to fit over the shaft in a fluid-tight manner for cooperating with the seal sleeve member, and a guide member extending radially outward from the seal sleeve member. The guide member has geometry provided for centrally locating the shaft within the bore in the tubular housing. The guide member is provided to protect the sealing integrity of the seal member when the seal assembly and the shaft member are assembled to one another. A method for installing the seal assembly with the guide member is also provided.

Abstract: To prevent lowering and unstableness of magnetic force and trouble caused by influence of muddy water or the like entered between the magnetic encoder (21) and a magnetic sensor (6), a sealing apparatus (4) comprises an approximately C-shaped protecting annular member (11) fitted to one of an inner member (1) and an outer member (2), a first encoder member (12) having a cylinder portion (12a) fitted to the protecting annular member (11), a second encoder member (13) held between the protecting annular member (11) and the first encoder member (12), a seal annular member (14), and a seal member (15) which is vulcanized and bonded to the seal annular member (14) and has seal lips slidably contacting with the protecting annular member (11) and the encoder member (12).

Abstract: A dynamic seal for a rotary shaft, the seal comprising a sleeve for being constrained in rotation on the shaft and an annular lip of polymer having a low coefficient of friction to come into sliding rotary contact with a stationary casing surrounding said shaft so that the dynamic seal provides sealing between said shaft and said casing. An annular encoder element of magnetizable polymer and presenting at least one polarized mark is secured to said sleeve and forms a support for said lip. The invention also provides a device including such a seal, and a method of fabricating the seal.

Abstract: A reinforcing ring applicator is provided to receive cartridges of reinforcer rings for applying flat, adhesive-coated annular reinforcement rings onto sheets of material about perforations which have been formed in the sheets of material. The reinforcer ring cartridge is a disposable item comprised of an annular backing member releaseably attachable to the reinforcing ring applicator. A reinforcing ring mounting post is frictionally engaged in a central aperture in the annular backing member. The reinforcer mounting post has a cylindrical, corrugated exterior surface and a lower tip formed with a plurality of separate, downwardly and radially inwardly directed, resilient deflectable fingers projecting therefrom. A plurality of flat, annular reinforcing rings are stacked one atop another and are releaseably and frictionally engaged with the mounting post by the corrugations thereof.