Polyester Films, also known as Mylar® Polyester Film, Metalized Polyester Film, PET Polyester Film, APET Polyethylene Teraphthalate Film, PETG Polyester Teraphthalate Glycol Film or Valox® Polyester, are flexible and dimensional stable, making it hard to tear. Typically resistant to high-temperature and UV, it is often used for electrical insulation, surface protection and packaging. Available with or without adhesive and in a variety of finishes, from clear to silver and many other colors or tints.