Bearing Rings made of hard fabric materials serve to guide pistons. They prevent metallic contact of the machine parts and absorb the transverse force that occurs. Hard fabric material Bearing Rings are primarily used in mobile hydraulics and heavy hydraulics, as they are very well-suited for higher surface pressures. An increased sliding ability which results in an improvement of the stick-slip effect is achieved by inclusion of PTFE in the compound. Bearing Rings are easier to install than Bearing Strips.