BOWDENZUG

摘要

A mechanical push-pull (10) cable comprising a steel wire core (11), a layer of fluoropolymer adhesive (13) covering the steel wire core, and an outer layer (17) of porous PTFE covering the layer of fluoropolymer adhesive. The mechanical push-pull cable may be a component of a mechanical cable system wherein the mechanical push-pull cable slides axially within a surrounding support tube (19). The support tube preferably has an inner surface comprised of non-porous PTFE. The support tube may optionally incorporate a contamination seal at the ends of the support tube to reduce the entrance of contaminating dirt and water into the system. The porous PTFE layer (17) may optionally be applied in direct contact with the steel wire core (11) if the porous PTFE is in the form of a helically wrapped porous expanded PTFE tape with fibrils oriented substantially parallel to the length of the tape. The layer of porous PTFE may optionally be filled with a lubricating and abrasion resistant filler such as graphite.