This high-density genuine tape dope is the best tape sealant available, and is specified by many industrial users, utilities, and government agencies. At 3 mil thick, it requires far fewer wraps than cheaper tapes. Easy-to-use - for sealing all types of threaded pipe, valves, fittings, accessories and controls, including those made from steel, galvanized and black iron, brass, copper, aluminum, stainless steel, glass, monel, synthetic rubber, and all plastics. Appropriate for pipes carrying: acids, solvents, alkalis, steam, hot and cold water, LP gas, natural gas, oxygen and almost every chemical. Self-lubricating, with excellent dielectric properties which minimize galvanic action.