FFKM

1、physical and chemical properties

Perfluoroether rubber is composed of TFE (main chain), PMVE (branch) and the bridge part of the composition, it not only has the same PTFE as high temperature, chemical resistance of the performance (resistance to more than 1,600 kinds of chemical corrosion) , Also has the flexibility of rubber, its compression deformation rate at 300 ℃ is only 50% or less. Ordinary perfluorinated rubber operating temperature range of -25 ℃ ~ +240 ℃, Kalrez7075 high temperature up to 327 ℃, even when exposed to 316 ℃ in the constant temperature or 343 ℃ such intermittent high temperature environment, Kalrez production will not Kalrez remains resilient and resilient in direct contact with the impregnation of aggressive fluids, resulting in hardening and embrittlement leading to seal failure. In fact, Kalrez's thermal stability tends to outweigh those fluids themselves. Perfluorinated rubber also has excellent air tightness (resistance to vacuum up to 1.33X10-7-1.33X10-8pa) and high cleanliness and ionization resistance. Kalrez is a registered trademark of DuPont Group High Performance Elastomer Co., Ltd. for perfluorinated rubber products.

2、the hardness range

Shore A75 degrees

3、color: brown, black, etc., can also be specified by the customer color.

4、application

Used in high corrosive chemical production, semiconductor chip manufacturing, pharmaceutical, oil and gas exploration and aerospace applications.