Masters® and Oatey® have the PTFE Tape you need. Our PTFE tapes can be used on all threaded pipe, valves and fittings carrying acids, solvents, alkalis, steam, hot and cold water, LP gas, natural gas, oxygen and almost any chemical. Weather-resistant, flexible, low dielectric constant, chemically inert and usable at low temperatures, all of our tapes perform over a temperature range of -450° to 500° F and up to 10,000 psi. They are non-hardening, non-toxic, non-stick and non-flammable.