To our customers: Due to unprecedented volume, carriers are experiencing delays and can no longer guarantee delivery times. Please account for these delays when placing orders.

Shop by Category

Shop by Brand

Shop by Brand

Buna Orings 70



Buna-N Nitrile O-rings 70 Durometer are heat resistant up to 212*F and 250*F intermittent to -30*F. 

The hardness of rubber compounds is measured by the Shore A durometer. The higher the durometer the harder the compound.  70-durometer hardness should be used whenever possible as it offers the best combination of properties for most O-Rings applications.  

Typically used in applications with propane, butane, petroleum oil, mineral oil, grease, mineral oils/greases, diluted acids, alkali and salt solutions at low temps and water.

NOT COMPATIBLE WITH....Gasoline, benzene, trichlorethylene, ketone, acetone, acetic acid, ethylenester, strong acids, brake fluid with glycol base