The common materials of seal oil seal are: nitrile rubber, fluororubber, silicone rubber, acrylate rubber, polyurethane, polytetrafluoroethylene, etc.

Nitrile rubber (NBR)

It has good heat resistance, wear resistance, resistance to all kinds of lubricating oil, grease, oil-gas mixture, etc., applicable temperature - 30 ~ 120 ℃, but it can not be used in phosphate ester hydraulic oil and gear oil containing extreme pressure additives, and its performance is stable in gasoline and low aniline point mineral oil.

Polyacrylate rubber (ACM)

Excellent oil and heat resistance, wear resistance, ozone resistance, UV radiation resistance, especially the resistance of lubricating oil, gear oil, motor oil, oil, oil series hydraulic oil, etc. with extreme pressure liquid agent, suitable for working in the range of - 30 ~ 150 ℃.

Fluororubber (FPM)

It is resistant to aging, heat and oil. It is applicable to almost all lubricating oil, fuel oil and gasoline. It is not easy to harden in the oil containing extreme pressure additives, but it has poor cold resistance, high temperature wear resistance, large compression deformation, and is suitable for temperature of - 20 ~ 250 ℃.

silicon rubber

It has outstanding high and low temperature resistance, can be used for a long time without performance change at 150 ℃; it can be used continuously for 10000h at 200 ℃; it can maintain its unique use elasticity, ozone resistance, weather resistance and other advantages within the working temperature range of - 70 ~ 260.

teflon

It has outstanding chemical stability, thermal stability, antifriction and self lubrication, and its cracking temperature is more than 400. Therefore, it can work normally in the temperature range of - 200 ~ 300 ℃. In addition to free fluorine and alkali metals, it has excellent corrosion resistance to chemicals, solvents, oxyhydrogen compounds and acids.