Hercules® PRO DOPE® is an oil based thread sealant with a uniform, smooth consistency that ensures easy application. PRO DOPE® will not drip, is lead-free, non-toxic and won't spill. It is non-separating and provides a tight, positive, leak-free seal. PRO DOPE® prevents rust and inhibits corrosion by forming a protective coating on threads. It is non-hardening and joints can be disassembled without damage to pipe fittings or threads. PRO DOPE® is easily applied with a natural bristle brush in temperatures as low as -15 deg F and performs over a temperature range of 0 to 350 deg F. PRO DOPE® is a gray colored thread sealant which contains no lead.