Gasoila PB16 is a PLS 2 1 Pint Premium Pipe Thread Sealant and Gasket Sealer, Case of 6. It is lead-free, non-hardening, non-toxic, opaque gray paste. The thread sealant is used with dilute acids, aliphatic solvents, ammonia, dilute caustic alkali, chlorine, diesel fuel, gasoline, kerosene, jet fuel, LPG, natural gas, petroleum solvents, heating oils, butane, hydraulic oils, mineral oils, refrigerants, and steam.