PFA/PTFE Wetted Surfaces 36kw PTFE Immersion Heater immersion heaters are the perfect solution for heating harsh chemicals or DI water to constant temperatures in ultrapure tanks, including PVDF, PFA, and quartz tanks. Their PFA/PTFE wetted surfaces are ideal for use in high-purity applications where chemical compatibility is of utmost importance. Other Applications Flammable Solvent Heating Products designed to safely heat IPA and low flash-point solvents, meeting the most