● Material: Nitrile Rubber（NBR ）. NBR Back O Ring Seal Cross Section 8.6mm Gasket Oil Sealing Washers ID 32.8 - 982.8mm. ● Wide Application：These Small Rubber O Rings Are Widely Used for Automotive, Pressure Washer, Filter, Pump, Water Hose, Plumbing Pipe, Engines, Valves, Air Conditioning Maintenance and Much More.
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