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Hercules Megaloc Thread Sealant has a unique odorless formula that contains Dupont Kevlar making it one of the highest performing thread sealant on the market. Megaloc is strong enough to withstand temperatures ranging from -50 degrees to 400 degrees Fahrenheit without hardening or cracking. The sealant can be used on steel, stainless steel, brass, copper, aluminum, plastics and is safe for use on drinking water lines. The sealant easily wipes from hands and clothes. It is available in seven variations.