Oatey® Great White® Pipe Joint Compound With PTFE is a non-hardening, non-separating, non-toxic paste that lubricates and seals all threaded joints. This compound permits a tighter assembly with lower torque for secure permanent sealing of all threaded connections. Allows for easy disassembly without stripping or damaging threads. Oatey products have earned the trust of plumbing professionals for over 100 years.