We are designing a rotary vane pump that will be pumping pure oxygen. There is a concern about using carbon based materials from an ignition standpoint. With that in mind we are looking to use non-metallic vanes. The vane material is Torlon 4301 which is 12% graphite powder and 3% teflon. The vane loads are low and the Max operating temp is 160 deg F. Do you have any experience with this or comments? Any other material suggestions (max PV is 13,000).