PTFE envelope gasket are use for type of static seal. ZD-G1700 is composed of elastic materials and it has superior properties against chemical (not affected by all chemicals except molten alkali metal and fluorine at elevated temperature).It also has a wide working temperature range,low coefficient of static and dynamic friction. ZD-G1700 is the best of the “non-stick” materials. PTFE envelope gasket has excellent weathering and aging characteristics.
Application:ZD-G1700 PTFE envelope gasket is used to seal pipe flanges glass lined, PVC or FRP.ZD-G1700 has low bolt torque effecting a seal and chemical compatibility.
A. dissection cut type
It has a cladding mouth, so it is an economical gasket used in low pressure, and has very good effects on leveling, compressed metal, porcelain and glass sealing surface. It is also called cladding gasket of Y-type dissection.
Cut it into 0.8MM---1MM ring-shaped sheet with cylinder material truck, divide it from the center of outer side thickness, put core materials into the cut mouth, which is about 1.5---2.0MM away from the inner hole.
B. folding type
It is cladding gasket of left frame-type dissection, with its inner diameter the same with that of flange, so as to prevent the liquid from whirlpooling in the flange, so the inside air has very small expansion amount and good sealing performance. This kind of gasket is often made of reinforcing materials of graphite, open asbestos and rubber.