Abstract: A composition comprises fibrillated polytetrafluoroethylene, molybdenum disulfide and a thermoplastic elastomeric material. In the composition, fibrillatable polytetrafluoroethylene is preassociated with molybdenum disulfide and combined with a thermoplastic elastomeric copolymer in relative amounts from as low as about 2 parts per hundred rubber to as high as about 12 parts per hundred rubber, with the balance thermoplastic elastomeric copolymer and filler. The composition can further include an unpolymerized polytetrafluoroethylene binder residue of the fibrillated polytetrafluoroethylene.

Abstract: Compositions are disclosed containing an elastomer, particulate polytetrafluoroethytlene and an amount of molybdenum disulfide effective to permit their manufacture. The particulate polytetrafluoroethylene may include amounts from 25 percent by weight to 80 percent by weight, and/or include small amounts of fibrillated polytetrafluoroethylene. Also disclosed are additives for such compositions, and methods for preparing such compositions and additives using polytetrafluoroethylene and molybdenum disulfide, and improved compositions and products.