Abstract: A seal for use on a disc brake piston/caliper assembly which seals the piston and also functions as a piston-return spring. The seal has a seal-retaining portion, a sealing lip portion, and a radially extending flex portion therebetween for retracting the piston by an amount equal to the flex portion retraction, thus automatically adjusting the piston position to compensate for normal pad wear. The seal can also include a locking flange and a separate pressure sealing lip to allow the seal to function without the previously required separate lathe cut sealing ring.

Abstract: A unitized dual lip seal for providing a seal between a housing and a shaft extending through a bore in the housing, including (1) a wear sleeve connected to the housing and having an inwardly extending radial flange, and (2) an elastomeric member mounted on the shaft with a main sealing lip riding on the inner wall of the wear sleeve on one side of the radial flange and an auxiliary lip on the other side of the radial flange and riding on the outside face of the radial flange. The umbrella-like auxiliary lip prevents formation of a pocket of contaminant and also encourages water drainage to wash sludge away from the auxiliary lip.

Abstract: A Pitman shaft boot seal designed for a static sealing application with one sealing surface compressed against the Pitman arm and the other sealing surface compressed against the steering gear housing. The sealing surfaces are held in place by a compression spring located inside the boot seal. The cylindrical portion of the boot seal is formed with a plurality of identical, equally spaced-apart, parallel, hollow ribs parallel to the axis of the Pitman shaft and extending around the entire circumference of the seal. The ribs allow the boot seal to twist as the Pitman arm moves arcuately, without breaking the static seal at the sealing surfaces.

Abstract: A shaft seal of the type including a metal case and a polytetrafluoroethylene sealing element, is provided with an auxiliary sealing lip by providing a radial flange of the metal case with a plurality of circumferentially spaced-apart apertures therethrough and molding an annular filler ring of synthetic rubber in the space between the sealing element and the metal case such that the rubber also flows through the apertures to the other side of the radial flange of the metal case and forms an auxiliary lip there. The filler ring chemically bonds to the metal case and mechanically bonds to the sealing element to lock the sealing element in place while also forming an auxiliary lip.

Abstract: A portable hand tool for applying wrapping tape to pipe threads. The tape on a geared core is placed in a casing of the tool, the tool is clamped onto a fitting, a metering lever is advanced to feed tape into contact with the fitting, the tool is then rotated around the fitting, the tape is cut, and the tool unclamped and removed from the fitting.

Abstract: An oil seal and the combination of a housing bore with the oil seal, the oil seal including an annular locking bead and annular O.D. sealing ribs, for use in applications where a minimum of radial force may be exerted by the seal on the bore and where the oil seal must be positively retained in the bore. The O.D. sealing ribs provide sufficient interference fit with the bore to effect a seal, but insufficient to retain the oil seal in the bore. The locking bead positively retains the oil seal in the bore.

Abstract: A portable hand tool for applying wrapping tape to pipe threads. The tape on a geared core is placed in a casing of the tool, the tool is clamped onto a fitting, a metering lever is advanced to feed tape into contact with the fitting, the tool is then rotated around the fitting, the tape is cut, and the tool unclamped and removed from the fitting.

Abstract: A seal of the type having a metal shell with a cylindrical flange and with an elastomeric O.D. is transfer molded by positioning the cylindrical flange of the shell in a seal-forming cavity of the transfer mold such that it is directly axially in-line with the sprue holes of the mold, whereby the flow of elastomer into the cavity is split by the cylindrical flange into two streams, one adjacent the I.D. and one adjacent the O.D. of the cylindrical flange such that the fluid pressure against the cylindrical flange is equalized and distortion of the shell is substantially reduced or eliminated.

Abstract: A low friction bearing composition comprising a major portion of a thermoplastic resin other than polytetrafluoroethylene and a minor portion of a filled polytetrafluoroethylene material, said filled polytetrafluoroethylene material consisting essentially of at least 50% by volume of polytetrafluoroethylene polymer and the remainder being a filler material, said filler material comprising a first filler material and a second, different filler material, said first filler material being selected from the group of soft metals and soft metallic oxides or sulfides having lubricating properties such as lead and its oxides, cadmium and its oxides, titanium oxide, zinc oxide, molybdenum disulfide, and antimony and its oxides and trioxides, said second filler material being selected from a group of hard filler materials such as bronze, copper alloy, glass and ceramic.

Abstract: Anti-mist compounds adapted to inhibit the misting tendencies of printing inks on high speed printing presses are prepared by mixing chrysotile particles having an average particle size exceeding about 0.01 inch and preferably ranging from 0.1 inch to about 0.5 inch, with a printing ink vehicle to provide a mixture in which the particles of chrysotile are wetted by the vehicle and which preferably contains above about 20% by weight of chrysotile. The mixture is sheared, as on a three roller mill for example, to grind the chrysotile into micro-fibrous particles and to distribute the micro-fibrous particles uniformly throughout the vehicle. By employing chrysotile particles having the aforesaid particle size range, workable compound mixtures containing 35% or more by weight of chrysotile may be obtained. The compound mixtures produced are useful to inhibit the misting tendencies of printing inks without causing flatting or emulsification of the ink, and without appreciably affecting ink viscosity.

Abstract: A unitized dual lip seal for providing a seal between a housing and a shaft extending through a bore in the housing, including (1) a wear sleeve connected to the housing and having an inwardly extending radial flange, and (2) an elastomeric member mounted on the shaft with a main sealing lip riding on the inner wall of the wear sleeve on one side of the radial flange and an auxiliary lip on the other side of the radial flange and riding on the outside face of the radial flange. The umbrella-like auxiliary lip prevents formation of a pocket of contaminant and also encourages water drainage to wash sludge away from the auxiliary lip.

Abstract: A unitized thrust bearing is held within an interlocking seal assembly including outer and inner seal elements each having a radial portion and a cylindrical portion at the outer end of the radial portion, with the cylindrical portions extending toward each other. The outer cylindrical portion is metal and includes a radially inwardly extending locking member at the distal end thereof and the inner cylindrical portion has a radially outwardly extending O.D. sealing lip. The locking member and sealing lip provide an interference fit therebetween and must snap past one another to lock the seal elements together and unitize the thrust bearing. The radial portions of each of the seal elements includes an I.D. shaft sealing lip molded thereto.

Abstract: The spring installed on the sealing element of a seal is positively retained during shipping, handling and installation by covering the spring and at least adjacent portions of the sealing element with a film of wax. In the preferred embodiment of a lip type seal including a metal casing and an elastomeric sealing element having a garter spring installed thereon, the entire head section and spring of the seal are covered with a film of wax by immersing the head section in a melted wax-like substance. The wax film positively retains the spring and also provides lubrication to the sealing lip during initial installation and start up.