Customized Nitrile FDA Liquid Silicone Rubber Spiral Wound Sheet Sealing Gasket Washer

Nitrile rubber is a copolymer of acrylonitrile and butadiene monomer, which is mainly produced by low-temperature lotion polymerization. It has excellent oil resistance, high abrasion resistance, good heat resistance and strong adhesion. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance and slightly low elasticity.

Nitrile rubber is mainly used to manufacture oil-resistant rubber products. There are five kinds of acrylonitrile content (%) in nitrile rubber: 42 ～ 46, 36 ～ 41, 31 ～ 35, 25 ～ 30, 18 ～ 24. The higher the content of acrylonitrile, the better the oil resistance, but the lower the cold resistance. It can be used in air at 120 ℃ or oil at 150 ℃ for a long time. In addition, it also has good water resistance, air tightness and excellent bonding performance. It is widely used in making various oil-resistant rubber products, various oil-resistant washers, gaskets, sleeves, flexible packaging, flexible rubber tubes, printing and dyeing rubber rolls, cable rubber materials, etc., and has become an indispensable elastic material in the automobile, aviation, oil, copy and other industries.

Nitrile rubber is one of the most representative rubber with excellent comprehensive properties such as oil resistance, physical and mechanical properties and chemical resistance. Effective use of these properties can make it meet various purposes. Among general adhesives, NBR rubber has far better resistance to benzene, petroleum-based oil and non-polar solvent than NR, SBR, IIR and other non-polar adhesives, and also better than polar CR, but the performance of nitrile rubber's polar solvent and polar oil resistance is not good enough.

Because of its excellent oil resistance and physical and mechanical properties, NBR is widely used in the manufacture of various oil-resistant rubber products, such as O-ring, gasket, hose and fuel tank rubber lining, printing drum, oil tank lining, insulating floor plate, oil-resistant shoe sole, hard rubber parts, fabric coating, pipe thread protection layer, pump impeller, wire sheath, adhesive, film for food packaging, rubber gloves and other fields.