EPDM composed of ethylene and propylene copolymerization main chain is double chain, Therefore, heat resistance, aging resistance, ozone resistance, stability are very good, but can not sulfur sulfur. In order to solve this problem, a small amount of the third component of the double chain is introduced into the EP main chain, which can be sulfurized into EPDM, and the general use temperature range is -50~150 ℃. Excellent resistance to polar solvents such as alcohols, ketones, glycols and phospholipids.

Advantages: Good weather resistance and ozone resistance Excellent water resistance and chemical resistance can use alcohol and ketones high temperature vapor resistance, good permeability to gas.

Disadvantages: Not recommended for food use or exposure to aromatic hydrogen.

• Common use：

  Seals for high temperature steam environment. Sanitary seals or parts. Rubber parts in braking (braking) systems. Seals in radiators (car water tanks).