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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).
Tempered Glass. What is tempered glass. Tempered glass (also known as toughened glass) is an extremely strong glass which has been thermally heat treated to induce compressive stresses of 11000 to 20000 psi on the surfaces and edge compression of not less than 9700 psi.