NBR Rubber O-Rings are used for Hydraulic and Pneumatic systems and used as seal energizer for low pressure applications such as pneumatic, it has excellent resistance to mineral oil, greases, water, hydro carban fuels, compression set resistance and good elastic properties, it is not suitable to automotive brakes fluid.
Chemical compatibility
NBR Rubber O-Rings are good general purpose, oil resistant materials. The fact that they are less expensive than more complex high performance elastomers ensures their continuing popularity for sealing applications across all industrial sectors. But they have limited weathering resistance