Nitrile rubber O-ring O-ring referred NBR. Butadiene and acrylonitrile copolymer prepared a synthetic rubber. Nitrile rubber O-ring O-ring with its excellent oil resistance and Achillea said its oil resistance after polysulfide rubber, acrylic rubber and fluorine rubber, nitrile rubber O-rings in addition O-ring also has good abrasion resistance, aging resistance and air tightness, but ozone resistance, electrical insulation and resistance to cold than the poor, and better conductivity.

Nitrile rubber O-ring O-ring production process has the following features:

1, nitrile rubber O-ring O-ring polar acrylonitrile monomer, resulting in less stable latex polymerization process, the greater the amount of acrylonitrile, the worse the stability of the latex.

2, nitrile rubber O-ring O-ring is too acidic or alkaline medium or high temperature will cause hydrolysis polymerization cyano group, namely: the resulting acid will destroy the emulsifier, which also contributed to the cause of instability of the latex one.

3, intermediate polymer chain amide group and nitrile rubber O-ring O-ring hydrolysis reaction of cyano at higher temperatures, are likely to carry out the crosslinking reaction, so that product quality deterioration.

4, NBR strong intermolecular chain force, greater hardness, it is difficult to process, in which the polymerization temperature of the obtained PS 30 ? most difficult to process, after the pre-plasticized required on a chill roll to operating. Often used to more effectively regulate the molecular weight of the industrial and the polymerization temperature was reduced to 5 ?, in order to reduce side reactions to improve its processability. On the other hand, also through a variety of NBR rubber such as chloroprene rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber and synthetic resins such as polyvinyl chloride, phenolic resin blends (see Polymer Blends thereof), so that the performance is improved.

If the seal ring work environment only come into contact with oil, choose (NBR) NBR rubber material can be. Division I professional production and sales of oil nitrile rubber O-ring O-ring, full size, stock, quality assurance.

NBR is mainly oil, wear-resistant, long-term use of high temperature does not exceed 100 degrees, if it is exposed to chemical substances, recommended to choose (VITON) fluorine rubber, fluorine rubber than NBR but the price much higher. Fluorine rubber mainly chemical resistance, acid, oil, wear-resistant, long-term use of high temperature does not exceed 220 degrees.

Rubber oil resistance according to classification (polar rubber): CR, NBR, HNBR, ACM, AEM, CSM, FKM, FMVQ, CO, PUR.

Oily rubber impatience classified (non-polar rubber): NR, IR, BR, SBR, IIR, EPR, EPDM.