What is FEP tubing?

What is FEP tubing, and how does it work?
FEP (Fluorinated Ethylene Propylene) is a semi-clear tubing that retains its strength and benefits over a wide temperature and environmental range. FEP tubing has superior chemical resistance, advanced gas and vapor permeability properties, and high UV transmission ratings.

The full name of FEP is Fluorinated ethylene propylene, which is translated into fluorinated ethylene propylene copolymer (perfluoroethylene propylene copolymer). English trade name: Teflon* FEP is a class of chemical substances. FEP is a copolymer of tetrafluoroethylene and hexafluoropropylene. The melting point of FEP crystal is 304°C, and the density is 2.15g/CC (gram/cubic centimeter).

FEP can be applied to soft plastics, and its tensile strength, wear resistance, and creep resistance are lower than many engineering plastics. It is chemically inert and has a low dielectric constant over a wide temperature and frequency range