PTFE won't contaminate gases and fluids and is hydrophobic so it absorbs little water. The material works in temperatures from –320 to 500°F (–200 to 260°C) and comes in rods, tubes, and sheets, as well as custom shapes.

Saint-Gobain Performance Plastics Corp.,
1199 S. Chillicothe Rd., Aurora, OH 44202,
(800) 223-4966,
rulonmeldin.com