NBR also named as nitrile rubber, buna-N. It is the most widely used elastomer in the seal industry today. Advantages including Excellent Abrasion-Resistance, Good Rebound Resistance, Good Tensile Strength and Elongation, Excellent Animal and Vegetable Oil Resistance, Good Oil and Fuel Resistance, Good Water Resistance. But it is not good at Oxygenated-Solvent Resistance and Ozone Resistance.