Oatey 31261 Blue Pipe Joint Compound, 4 fl-Ounce Great Blue pipe joint compound has all the benefits of a PTFE based thread sealant without the mess Great Blue is a flexible, Blue, no hardening, nonseparation, nontoxic, paste that has no odor and cleans up easily Use on PVC, CPVC, ABS, polyethylene, polypropylene, iron, steel, copper, or Brass threads up to and including 2" Lubricates and seals all threaded joints White, non-hardening, non-separating, non-toxic paste Withstands up to 3,000 PSI on gases from -50 to +400F, and 10,000 PSI on liquids from -50 to +500F For use with water, steam, caustics or dilute acid lines of PVC, CPVC, ABS, cycolac, polypropylene, iron, steel or copper Lubricates and seals thread on water, natural gas, steam, air lines, caustics and dilute acids