1.1 This standard classification system and basis for speci-fication covers polytetrafluoroethylene (PTFE) filled molding compounds made with virgin PTFE resins defined in Specifi-cation D4894, as Types II and III.
N OTE 1—This system can be used as a model for other PTFE compounds having particulate fillers that can survive the sintering temperatures of PTFE as can those listed in this standard. This system is restricted to virgin PTFE base resin for technical reasons. Recycled or reprocessed material cannot be processed successfully.
