FEP tubing (Fluorinated Ethylene Propylene tubing) is made from a melt processable thermoplastic that has end uses similar to PTFE. However, it has several properties PTFE does not have. FEP is one of the clearest plastics available on the market and can be supplied in long, continuous coils. Also, it can be welded and tubes can be sealed by melting. FEP tubing has a continuous working temperature of 400° F (204°C).