Duratron® T4301 PAI Polyamide-imide offers a very low expansion rate and coefficient of friction, and also exhibits little to no slip-stick in use. The addition of PTFE and graphite provides higher wear resistance compared to the unfilled Duratron® T4203 PAI grade, and also gives Duratron® T4301 PAI excellent dimensional stability capabilities over a wide temperature range. Duratron® T4301 PAI's flexural modulus of 1,000,000 psi is higher than most other advanced engineering plastics, which allows it to excel in severe service wear applications such as non-lubricated bearings, seals, bearing cages, and reciprocating compressor parts.