EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. It only contains unsaturated double bonds in the side chain, so it has excellent aging resistance such as ozone resistance, heat resistance and weather resistance. Foreskin and high-voltage, ultra-high-voltage insulating materials. It can also manufacture light-colored products such as shoes and sanitary products. The natural color usually said in the industry refers to black.
Nitrile-butadiene rubber (NBR) is a copolymer of acrylonitrile and butadiene monomers. It is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and viscosity Relay is strong. The disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance and slightly lower elasticity. Widely used in the manufacture of various oil-resistant rubber products, such as O-rings, school rings, hoses and fuel tank linings, printing cylinders, oil tank linings, insulating floor boards, oil-resistant shoe soles, hard rubber parts, fabric coatings, Pipe thread protection layer, pump impeller and wire sheath, adhesive, film for food packaging, rubber gloves and other fields.

  When distinguishing between the two, you can use the following methods:
  It can be judged by oil absorption and combustion:
   1. Nitrile rubber is flammable, non-self-priming, orange-yellow flame, jet sparks, sparks, thick black smoke Residue, taste: slightly swollen, the residue has knots without stickiness, special smell;
   2. Ethylene-propylene rubber is flammable, no self-priming, no smoke, and the smoke has a waxy smell!