FREQUENT Q/A

How many kinds of oil seal material?

SINO BEARINGSAug 09, 2022

The commonly used materials of oil seal are: nitrile rubber, fluorine rubber, silicone rubber, acrylic rubber, polytetrafluoroethylene and so on.

1, nitrile rubber has good heat resistance, wear resistance, resistance to all kinds of lubricating oil, grease, oil and gas mixture, etc.

2, polyacrylate rubber oil resistance, excellent heat resistance, wear resistance, ozone resistance, UV radiation resistance, especially resistance to extreme pressure liquid agent lubricating oil, gear oil, motor oil, oil, petroleum hydraulic oil.

3, fluorine rubber aging resistance, heat resistance, oil resistance, almost applicable to all lubricating oil, fuel oil, gasoline, oil containing extreme pressure additives is not easy to harden, but cold resistance, high temperature wear resistance is poor, permanent compression deformation is large.

4, silicone rubber has outstanding high and low temperature resistance, can be used at 150 degrees Celsius for a long time without performance changes.

5, polytetrafluoroethylene has outstanding chemical stability, thermal stability, antifriction and self-lubricity, its cracking temperature is above 400 degrees Celsius.

By CINDY · Bearing design & application specialists

This article is prepared by the SINO BEARINGS (Sinoti Tech) engineering team, based on published bearing standards (ABEC / ISO P0–P2), material datasheets, and field application experience across industrial, food, medical and aerospace uses. For manufacturer background, certifications and facilities, see our About page.

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