Also referred to as:
NBR, Buna-N, Buna
-22 to 210°F
-30 to 100°C
Use in: Pneumatic seals, O-Rings, oil seal lips, gaskets, washer and low pressure hydraulic seals. Can be used with a back-up ring in higher pressure applications. This is the most popular o-ring material.
Description: General purpose elastomer for use as seal energizer or low pressure applications such as hydraulics and pneumatics. Resistant to oils, hydraulic fluids, water fuels, gases. Not suited for use in brake fluids. Good abrasion resistance. Good resistance to compression set. High tensile strength.
Characteristics: Rubber-like elastomer. Dull, matte finish. Some NBR o-rings have a very shiny surface.