Characteristics of Nitrile rubber O-rings

Nitrile butadiene rubber is obtained from emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance and low elasticity. NBR is mainly used to make oil resistant rubber products.

Everyone must have some knowledge of NBR, but do you know what properties of nitrile rubber O-rings? Next, Yuanhua will bring you to know the characteristics of nitrile rubber O-rings.

Features of nitrile rubber O-rings:

1. Ozone resistance is worse than Cr (chloroprene rubber) and better than NR (natural rubber)

2. Rubber is endowed with better physical and mechanical properties and wear resistance through reinforcement

3. When the content of acrylonitrile in nitrile rubber O-rings is 39%, the air tightness is the same as that of IIR rubber, and the air tightness is better

4. General flexibility at low temperature and excellent antistatic performance

5. Used as seal or dynamic seal in hydraulic and pneumatic system

For example, in order not to discard the end cover and add O-ring due to the large deviation during the bearing chamber processing, it does not run to the outer ring, because the O-ring and the bearing are in line contact, and two are installed to form a cylindrical surface, which can maintain the concentricity of the rotor, but because the O-ring is soft, the temperature rise of the bearing will cause plastic deformation during operation, and the higher the operation time, the easier the rotor is to eccentric O-rings should be avoided as far as possible.