PTFE Thread Seal Tape is 100% made by virgin polytetrafluoroethylene (PTFE), it creates a leak-proof seal and applies incredibly easily. This tape is compatible with a wide range of materials due to PTFE being a non-reactive ingredient and has the lowest coefficient of friction of most solid materials. It offers tight assembly and easy disassembly. It works best on pipe and threaded fixtures made from iron, copper, steel, brass, aluminum, PVC, ABS, polypropylene, and more.