WC-393 is especially suited for lubrication where high temperatures and friction are present. Does not contain grease, wax, silicone, or graphite. Reduces friction, prevents seizure, galling and scoring. Non-carbonizing fluid carrier volatizes without carbonization, leaving behind a residual lubrication film of molybdenum disulfide. Non-corrosive, non-gumming. WC-393 is also used on surge bleed valves. Ingredients: synthetic oil, molybdenum disulfide.