Ketron® HPV Polyetheretherketone PEEK shapes are carbon fiber reinforced, with graphite and PTFE lubricants, giving them the lowest coefficient of friction and the best machinability of all PEEK materials. Due to Ketron® HPV PEEK’s combination of low wear and friction, and high LPV, this grade is often chosen as a solution for service bearings, bushings, insulators, valves, and seals.