ORING NBR 70 BLACK

Nitrile 70 metric o-rings o-rings are widely used in the seal industry. Nitrile 70 metric o-rings offer excellent resistance to petroleum products. They can also be compounded for service over a temperature range of -40°C to 135°C. Special Nitrile compounds offer temperature ranges of -55°C to 135°C (Dry Heat Only).

Nitrile 70 metric o-rings provide excellent compression set, tear, and abrasion resistance.

The major limiting properties of nitrile are its poor ozone and weather resistance and moderate heat resistance. However, in many applications these are not limiting factors. Nitrile o-rings are commonly referred to as a Buna o-ring, or NBR o-rings. 

Carboxylated Nitrile can have superior abrasion resistance, while still having improved oil resistance.