Paulin O-Rings are made of a special Nitrile Compound Rubber (also known as Buna-N and acrylonitrile butadiene rubber), a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene. Recommended for petroleum oils, greases, automotive gasoline, alcohols, glycols, fuel oil, propane and many other fluids. Popular standard sizes used in automotive, agricultural and industrial equipment maintenance. Assembly instructions: Be sure all parts are perfectly clean. Then lubricate the O-Ring. For an external groove, stretch the ring over the shaft or fold the ring into an internal groove. Avoid excessive twisting.
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