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PTFE, or polytetrafluoroethylene, is a TeflonÂ®-coated woven fiberglass membrane that is extremely durable and weather resistant. PTFE fiberglass membranes can be installed in climates ranging from the frigid arctic to the scorching desert heat with a project life in some cases exceeding 30 years.PTFE fiberglass coating is chemically inert, capable of withstanding temperatures from -100Â°F to +450Â°F (-73Â°C to +232Â°C).TFE fiberglass membranes can be installed in climates ranging from the frigid arctic to the scorching desert heat with a project life in some cases exceeding 30 years. PTFE fiberglass coating is chemically inert, capable of withstanding temperatures from -100Â°F to +450Â°F (-73Â°C to +232Â°C).
Addition of glass improves compressive properties by as much as 40% and improves wear resistance greatly. These compounds resist acids and oxidation but can be attacked by alkali. Teflon with 25% glass fibers for increased stability is supplied in sheets, rods & tubes.1  It is available in Standard 25% Glass Filler, as well as, 15%, 20%, and other custom blends. 2  Data Represented for this product in the Material Design Tool (Sortable Data Sheets) is based on the standard 25% Glass-Filled PTFE.eflon with 25% glass fibers for increased stability is supplied in sheets, rods & tubes. 1  It is available in Standard 25% Glass Filler, as well as, 15%, 20%, and other custom blends.