PET sheet (polyethylene terephthalate) is a common thermoplastic that provides high dimensional stability, excellent mechanical strength and good resistance to creep. It offers resistance to chemicals, provides very low moisture absorption and is a good electrical insulator. PET film sheet also performs well in wear applications and has a tough, hard surface that can be easily machined and polished.
http://www.pvcpetsheet.com/pet-film-sheet/
