PTFE Cast Film Laminated to PTFE Coated Glass ClothHigh quality woven fibreglass fabrics coated with a specially formulated fluoropolymer coating.It is designed to provide enhanced flex properties and excellent high temperature performance.It is then laminated with PTFE (Teflon) multilayer cast films to provide superior gas barrier properties.The laminated barrier cast PTFE films reduce permeation of potentially damaging flue gases.