Novel tribological materials for production of friction pairs of face gaskets operating in aggressive media were developed. The materials are based on the polytetrafluoroethylene matrix and contain crystalline poly-p-hydroxybenzoyl, MoS2, and oxide-nitride fillers. These materials were found to possess high mechanical strength and to provide low friction coefficients. Such properties are explained on the basis of structural changes occurring in the material on the introduction of a filler. The dependence of the friction coefficient and the temperature in the friction zone on the specific pressure on the material was examined. It has been shown that on increasing the load the temperature rises, while the friction coefficient decreases. The materials can be used in a wide temperature range, from -30 to +250°C.