1、 NBR nitrile rubber sealing ring: suitable for use in petroleum hydraulic oil, glycol hydraulic oil, diester lubricating oil, gasoline, water, silicone grease, silicone oil and other media. It is currently a widely used and low-cost rubber seal. Not suitable for polar solvents such as ketones, ozone, nitro hydrocarbons, MEK, and chloroform. The general temperature range for use is -40~120 ℃.

2、 HNBR hydrogenated nitrile rubber sealing ring: It has excellent corrosion resistance, tear resistance, and compression deformation resistance, as well as good resistance to ozone, sunlight, and weather. Better wear resistance than nitrile rubber. Suitable for washing machinery, automotive engine systems, and refrigeration systems using the new environmentally friendly refrigerant R134a. Not recommended for use in alcohol, ester, or aromatic solutions. The general temperature range for use is -40~150 ℃.

3、 SIL silicone rubber sealing ring: It has excellent heat resistance, cold resistance, ozone resistance, and atmospheric aging resistance. Has good insulation performance. But its tensile strength is inferior to that of ordinary rubber and it does not have oil resistance. Suitable for household appliances such as electric water heaters, irons, microwaves, etc. It is also suitable for various products that come into contact with the human body, such as water bottles, water dispensers, etc. Not recommended for use in most concentrated solvents, oils, concentrated acids, and sodium hydroxide. The general temperature range for use is -55~250 ℃.

4、 VITON fluorine rubber sealing ring: It has better high temperature resistance than silicone rubber, with better weather resistance, ozone resistance, and chemical resistance, but poor cold resistance. It has resistance to most oils and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons, and animal and vegetable oils. Suitable for sealing requirements of diesel engines, fuel systems, and chemical plants. Not recommended for use in ketones, low molecular weight esters, and mixtures containing nitrate. The general temperature range for use is -20~250 ℃.

5、 FLS fluorosilicone rubber sealing ring: Its performance combines the advantages of fluorosilicone rubber and silicone rubber, with excellent oil resistance, solvent resistance, fuel oil resistance, and high and low temperature resistance. Can resist the erosion of oxygen-containing compounds, aromatic solvents, and chlorine containing solvents. Generally used for aviation, aerospace, and military purposes. It is not recommended to expose to ketones and brake fluid. The general temperature range for use is -50~200 ℃.

6、 EPDM EPDM sealing ring: It has good weather resistance, ozone resistance, water resistance, and chemical resistance. Can be used for alcohols and ketones, as well as for sealing in high-temperature water vapor environments. Suitable for bathroom equipment, car radiators, and car brake systems. Not recommended for food use or exposure to mineral oil. The general temperature range for use is -55~150 ℃.

7、 CR chloroprene rubber sealing ring: It has good resistance to sunlight and weather. Not afraid of refrigerants such as dichlorodifluoromethane and ammonia, resistant to dilute acids and silicone grease lubricating oils, but has a large expansion in mineral oils with low aniline points. Easy to crystallize and harden at low temperatures. Suitable for various environments that come into contact with the atmosphere, sunlight, ozone, and various flame resistant and chemically corrosion-resistant sealing components. Not recommended for use in strong acids, nitro hydrocarbons, esters, chloroform, and ketones. The general temperature range for use is -55~120 ℃.

8、 IIR butyl rubber sealing ring: good air tightness, excellent heat resistance, sun resistance, ozone resistance, and good insulation performance; Has good resistance to polar solvents such as alcohols, ketones, esters, etc., and can be exposed to animal and vegetable oils or oxidizable substances. Suitable for chemical resistant drugs or vacuum equipment. It is not recommended to use it together with petroleum solvents, kerosene, or aromatic hydrocarbons. The general temperature range for use is -50~110 ℃.

9、 ACM acrylic rubber sealing ring: It has good resistance to oil, high temperature resistance, and weather resistance, but its mechanical strength, compression deformation rate, and water resistance are slightly poor. Generally used in automotive transmission systems and power steering systems. Not suitable for hot water, brake oil, and phosphate esters. The general temperature range for use is -25~170 ℃.

10、 NR natural rubber sealing ring: It has good wear resistance, elasticity, tensile strength, and elongation. But it is prone to aging in the air, becomes sticky when exposed to heat, expands and dissolves easily in mineral oil or gasoline, and is resistant to alkali but not strong acid. Suitable for use in automotive brake fluid, ethanol, and other liquids containing hydroxide ions. The general temperature range for use is -20~100 ℃.

11、 PU polyurethane rubber sealing ring: Polyurethane rubber has good mechanical properties, and its 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 it is prone to hydrolysis at high temperatures. Generally used for high-pressure and wear-resistant sealing components, such as hydraulic cylinders. The general temperature range for use is -45~90 ℃.