BLUE MONSTER PTFE pipe thread sealant is formulated with PTFE resin, a polymer consisting of recurring tetrafluoroethylene monomers whose formula is (CF2-CF2). It is inert and compatible with a very wide range of materials. Use Blue Monster on threads made from all metals, PVC, CPVC, ABS and nylon plastic pipe systems. Now available in a convenient 2 ounce squeeze tube. Specially formulated for extra lubrication on metal pipe threads. Ideal, compact size for any tool box or storage bin. Non-hardening, slow-drying soft-set formula is non-toxic and grit free.