Seal ring special for automobile air filter

Abstract

The invention discloses a special seal ring for an automobile air filter. The special seal ring for the automobile air filter is prepared from the following components in percentage by weight: 30% of butadiene-acrylonitrile rubber, 15% of natural rubber, 25% of carbon black, 10% of zinc oxide powder, 3% of softener dioctyl-phthalate, 1% of active agent zinc oxide, 4% of stearic acid, 2.3% of vulkacit dicumyl peroxide, 2% of sulphur powder, 2% of self-lubricating agent unsaturated fatty acid, and the balance of engine oil. The heat resistance of the seal ring is improved to 135 DEG C from 100 DEG C; the capabilities of resisting engine oil and fuel corrosion are intensified greatly; moreover, a wax-type protective layer can automatically exude from the seal ring special for the automobile air filter after the seal ring is placed at normal temperature for 15 days so as to achieve the self-lubricating effect, so that the seal ring special for the automobile air filter is very convenient to assemble, and the service life of the seal ring is also prolonged greatly.

Description

technical field [0001] The invention relates to a sealing ring, in particular to a special sealing ring for an automobile air filter. Background technique [0002] Traditional automotive filter seals use ordinary nitrile rubber (NBR) as the main raw material, and their formula design often takes tear resistance, wear resistance and extrusion resistance as key considerations. However, due to the It will encounter strong corrosion of engine oil and fuel oil, and the sealing ring for traditional automotive filters, which has not fully considered its use medium and working conditions in the formulation design process, has already lost its self-lubricating performance, heat resistance, aging resistance, etc. It is 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. Contents of the invention [0003] Aiming at the deficiencies in the existing technology, the technical problem ...

AI Technical Summary

Problems solved by technology

[0002] Traditional automotive filter seals use ordinary nitrile rubber (NBR) as the main raw material, and its formula design is often based on tear resistance, wear resistance and The anti-extrusion performance is a key consideration, but due to the strong corrosion of engine oil and fuel during use, the sealing ring for traditional automotive filters that does not fully consider its use medium and working conditions in the formulation design process In self-lubricating performance, heat resistance, aging resistance, etc., it is 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.