NBR Nitrile ASTM D 2000, SAE J200 Type/Class: BF, BG, BK, CH
Nitrile rubber is the general term for acrylonitrile butadiene terpolymer. The acrylonitrile content of nitrile sealing compounds varies considerably (18% to 50%) and influences the physical properties of the finished material.
The higher the acrylonitrile content, the better the resistance to oil and fuel. At the same time, elasticity and resistance to compression set is adversely affected. In view of these opposing realities, a compromise is often drawn, and a medium acrylonitrile content selected. Nitrile has good mechanical properties when compared with other elastomers and high wear resistance.
Varieties: Low Temp. Nitrile, Hydrogenated NBR (HNBR)
|Heat Resistance||Up to approximately 212°F (100°C)
with shorter life at 250°F (121°C)
|Cold Flexibility||Depending on individual compound,
between -30°F (–34°C) and -70°F (-57°C)
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