Products Infomation: FEP Tubing Used in applications ranging from environmental monitoring equipment to medical applications and electronics applications.forbest manufacturing manufactures a wide range of custom and stock sizes of FEP tubing. PTFE Tubing FEP Tubing is most referred to under the name "PTFE Tubing". PTFE is actually three different polymer resins: FEP, PTFE, and PFA. Applications Applications where FEP tubing is chosen usually require more clarity, flexibility or a lower heat shrinkable temperature than PTFE. Advantages of FEP Tubing Lower heat shrink temperature than PTFE More flexible than PTFE More optically clear than PTFE More lubricious than PFA