Buna-N Round Cord: Buna-N, Round C.S. Shape, 0.21 in C.S., 10 ft Overall Lg

Buna-N cord stock resists petroleum-based fluids and chemicals, alcohols, and tears. Also known as nitrile rubber, it is durable and frequently used to create custom seals for parts and components of machines in indoor environments with moderate temperatures. Buna-N cord stock is the most common material used to manufacture O-rings.