MPT MPT73 OC Three Paste Tube - 4 oz. Oxygen-safe, aqueous-based PTFE formulation Use as a vacuum grease for mid vacuum specifications to 10-3 Torr or in pressures up to 3500 psi Penetrates thread convolutions more effectively and more safely, than PTFE tape Compatible with diesel fuel, liquid propane gas and pure oxygen Not well suited for wet conditions