NBR Nitrile O'rings
NBR Nitrile Orings, the actual name is Acrylonitrile-Butadiene and can be referred to as Buna, Nitrile or NBR.
NBR Nitrile orings standard durometer or hardness is 70 or 90, but which can be made in other durometers, and comes in Black color. The NBR orings temperature range is generally -30°to 250°F. These are generally the least expensive and most readily available material in the widest range of sizes.
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