Buna-N Nitrile (NBR) Metric O-Rings 90 Durometer
Buna-N O-Rings / Nitrile O-Rings / NBR: Buna-N o-rings also referred to as NBR o-rings and Nitrile o-rings are the most widely used o-ring material in the world because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems, propane, natural gas and the default choice for basic applications. Buna-N o-rings are not recommended for exposure to sunlight, UV light, ozone and general outdoor weathering or hash chemicals, acids, keytones and many others.
Metric O-Ring Dimensions are defined by CS Cross Section and ID Inside Diameter. N2.00X012 = 2mm CS X 12mm ID