We have the PTFE tape you need. From economy-grade, low density tape to the thickest tape on the market - MEGATAPE - 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 -450º to 500ºF; 10,000 psi. Non-hardening, non-toxic, non-stick, non-flammable.