Metric NBR 70A Black O-Ring, 4.76 mm ID x 1.78 mm CS

This 70 durometer black nitrile (NBR) o-ring offers the best combination of properties across a variety of o-ring applications. Nitrile compounds perform well in gasoline, crude oil, power-steering fluid, hexane, toluene, water, water-based hydraulic fluids, and dilute bases, such as sodium hydroxide. Because nitriles contain unsaturated carbon-carbon bonds in the base polymer, they are not suitable for exposure to ozone, sunlight, and weathering.

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