| 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 percent by volume of polytetrafluoroethylene polymer and the remainder being a filler material, said fillter material being selected from the group consisting of carbon, glass, asbestos, silica, zinc, cadmium, lead and the oxides thereof, bronze, molybdenum disulfide, tungsten disulfide, alumina, zirconia, titanium oxide, cupric oxide, boron nitride, kieselguhr and mixtures thereof. The composition is readily formed by injection molding or hot extrusion methods and exhibits wear resistance at room temperatures substantially equal to polytetrafluoroethylene compositions which are fabricated by cold forming and sintering techniques. |