3.1mm X 69.4mm (NBR) Buna-N 90 Duro Metric O-Ring (JIS G70-N90), Each

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Nitrile, Also Known As Buna-N Or Nbr, Is A Copolymer Of Butadiene And Acrylonitirle. It Is The Most Commonly Used Elastomer For Sealing Products. It Has A Temperature Range Of -40F To 250F And Is Exceptionally Resistant To Petroleum Base Oils And Hydrocarbon Fuels. Nitrile Materials Also Exhibit Excellent Tensile Strength And Abrasion Resistance Properties. The Material Performs Well With Most Dilute Acids, Silicone Oils And Lubricants And In Water Applications.