Buna-N Nitrile O-Rings (NBR) Made in the USA

Buna-N O-Rings / Nitrile O-Rings / NBR:  Made in the USA Nitrile 70 durometer black colored Buna N. Underwriter Laboratories approved list for use with gasoline, kerosene, fuel oils, LP Gas, Naphtha, manufactured and natural gas, and anhydrous ammonia. This compound exhibits a good balance of properties. The working temperature range for this compound is -20°F to 212°F with intermittent peaks to 250°F.