RectorSeal No. 100 Virgin Pipe Thread Sealant with PTFE is a non-setting industrial grade compound containing virgin PTFE for use when a pure PTFE product is required. Recommended for use on threaded galvanized steel, iron, brass, copper, aluminum, stainless steel, polyethylene, fiberglass reinforced, PVC, CPVC and ABS pipe. Conforms to TT-S-1732.