Different materials of the seal ring use difference description

IIR butyl rubber seal:
It has excellent air tightness, good heat resistance, sunlight resistance, ozone resistance and good insulation performance. It has good resistance to polar solvents such as alcohols, ketones and esters and can be exposed to animal and vegetable oils or oxidizable oxides. Suitable for chemical resistant or vacuum equipment. It is not recommended to use with petroleum solvents, kerosene or aromatics. The general temperature range is -50~110 °C.

ACM acrylate rubber seal:
It has excellent resistance to oil, high temperature resistance and weather resistance, but mechanical strength, compression set and water resistance are slightly poor. Generally used in automotive transmission systems and power steering systems. Not suitable for use in hot water, brake fluid, and phosphate esters. The general temperature range is -25~170 °C.

NR natural rubber seals:
Has good wear resistance, elasticity, tear strength and elongation. However, it is easy to age in the air, easily swells and dissolves in mineral oil or gasoline, and is resistant to alkali, but not to strong acid. It is suitable for use in liquids such as automobile brake oil and ethanol with hydroxide ions. The general temperature range is -20~100°C.

PU polyurethane rubber seal:
The mechanical properties of polyurethane rubber are very good, and the wear resistance and high pressure resistance are far superior to other rubbers. The aging resistance, ozone resistance and oil resistance are also quite good, but the temperature is easily hydrolyzed. Generally used for high pressure and wear resistant sealing parts, such as hydraulic cylinders. The general temperature range is -45~90 °C.