Sealing ring

Abstract

The invention discloses a sealing ring. The sealing ring comprises the following raw material formula components in parts by weight: 120-130 parts of nitrile rubber, 90-100 parts of ethylene-propylene-diene monomer rubber, 60-80 parts of chloroprene rubber, 90-100 parts of butyl rubber, 25-30 parts of activated carbon, 10-12 parts of carbon fiber, 10-12 parts of graphite, 8-10 parts of dioctyl terephthalate, 6-8 parts of an ethylene-vinyl acetate copolymer, 8-10 parts of dibutyl ester, 8-10 parts of chlorinated paraffin, 5-8 parts of dioctyl sebacate, 12-15 parts of titanium dioxide and 12-15 parts of zinc chloride. The sealing ring has the beneficial effects that the strength is high, the compressive deformation is low, the high-low temperature resistances are excellent, the elongation is increased, the glue abrasion loss is low, the service life is long, the raw materials and the formula are reasonable, the cost is low, and the process is simple.

Description

technical field [0001] The invention relates to the technical field of sealing ring materials, in particular to a sealing ring. Background technique [0002] The traditional sealing ring is made of ordinary NBR as the main material, and its formula design often takes tear resistance, wear resistance and extrusion resistance as key considerations, and its use medium is not fully considered in the formula design process. The self-lubricating performance, heat resistance, aging resistance and other aspects of the sealing ring in the working condition are far from meeting the requirements of use. Therefore, it is easy to twist and crack due to the increase of torque during assembly, and the service life is short. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a sealing ring, which has high strength, low compression deformation, excellent high and low temperature resistance, im...

AI Technical Summary

Problems solved by technology

[0002] The traditional sealing ring is made of ordinary NBR as the main material, and its formula design often takes tear resistance, wear resistance and extrusion resistance as key considerations, and its use medium is not fully considered in the formula design process. The self-lubricating performance, heat resistance, aging resistance and other aspects of the sealing ring in the same working condition are far from meeting the requirements of use, so it is easy to twist and crack due to the increase of torque during assembly, and the service life is short