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1. NBR Rubber Sealing Ring

Suitable for use with petroleum-based hydraulic oils, glycol-based hydraulic oils, diester-based lubricants, gasoline, water, silicone grease, silicone oil, and other media. It is currently the most widely used and lowest-cost rubber seal. Not suitable for polar solvents such as ketones, ozone, nitro hydrocarbons, MEK, and chloroform. General operating temperature range: -40~120°C.

2. HNBR Hydrogenated Rubber Sealing Ring

Excellent resistance to corrosion, tearing, and compression deformation. Good resistance to ozone, sunlight, and weathering. Better wear resistance than rubber. Suitable for washing machinery, automotive engine systems, and refrigeration systems using the new environmentally friendly refrigerant R134a. Not recommended for use in alcohols, esters, or aromatic solutions. General operating temperature range: -40~150°C.

3. SIL Silicone Rubber Sealing Ring

Excellent heat, cold, ozone, and atmospheric aging resistance. Good insulation properties. However, tensile strength is poorer than general rubber and it is not oil-resistant. Suitable for household appliances such as electric water heaters, electric irons, microwave ovens, etc. Also suitable for various products that come into contact with the human body, such as kettles and water dispensers. Not recommended for use with most concentrated solvents, oils, strong acids, and sodium hydroxide. General operating temperature range: -55~250°C.

4. VITON Fluorocarbon Rubber Sealing Ring

Superior high-temperature resistance compared to silicone rubber, with excellent weather, ozone, and chemical resistance. Poor cold resistance. Resistant to most oils and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons, and animal and vegetable oils. Suitable for diesel engines, fuel systems, and sealing requirements in chemical plants. Not recommended for use with ketones, low molecular weight esters, and nitrated mixtures. General operating temperature range: -20~250°C.

5. FLS Fluorosilicone Rubber Sealing Ring

Combines the advantages of fluorocarbon rubber and silicone rubber, with excellent oil, solvent, fuel resistance, and high and low-temperature performance. Resistant to oxygenated compounds, aromatic solvents, and chlorinated solvents. Generally used in aviation, aerospace, and other applications. Not recommended for use with ketones and brake fluids. General operating temperature range: -50~200°C.

6. EPDM Ethylene Propylene Diene Monomer Rubber Sealing Ring

Excellent weather, ozone, water, and chemical resistance. Can be used with alcohols and ketones, and also suitable for sealing in high-temperature steam environments. Applicable in bathroom equipment, automotive radiators, and automotive brake systems. Not recommended for food applications or use with mineral oils. General operating temperature range: -55~150°C.

7. CR Neoprene Rubber Sealing Ring

Exceptional resistance to sunlight and weathering. Resistant to refrigerants such as dichlorodifluoromethane and ammonia, dilute acids, and silicone-based lubricants, but swells significantly in mineral oils with low aniline points. Prone to crystallization and hardening at low temperatures. Suitable for various environments exposed to atmosphere, sunlight, ozone, and various flame-resistant and chemically corrosive sealing applications. Not recommended for use with strong acids, nitro hydrocarbons, esters, chloroform, and ketones. General operating temperature range: -55~120°C.

8. IIR Butyl Rubber Sealing Ring
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Excellent gas tightness, good heat, sunlight, and ozone resistance, and good insulation properties. Highly resistant to polar solvents such as alcohols, ketones, and esters. Can be used with animal and vegetable oils or oxidizable substances. Suitable for chemical resistance or vacuum equipment. Not recommended for use with petroleum solvents, kerosene, or aromatic hydrocarbons. General operating temperature range: -50~110°C.

9. ACM Acrylic Rubber Sealing Ring

Excellent resistance to oils, high temperature, and weathering, but with slightly lower mechanical strength, compression set, and water resistance. Generally used in automotive transmission systems and power steering systems. Not suitable for hot water, brake fluid, or phosphate esters. General operating temperature range: -25~170°C.

10. NR Natural Rubber Sealing Ring

Rubber products have good abrasion resistance, elasticity, tensile strength, and elongation. However, they age easily in air, become sticky when heated, and swell and dissolve in mineral oils or gasoline. Resistant to alkalis but not strong acids. Suitable for use in automotive brake fluids, ethanol, and other liquids containing hydroxide ions. General operating temperature range: -20~100°C.

11. PU Polyurethane Rubber Sealing Ring

Polyurethane rubber has very good mechanical properties, with wear and high-pressure resistance far superior to other rubbers. Aging resistance, ozone resistance, and oil resistance are also quite good, but it is prone to hydrolysis at high temperatures. Generally used in high-pressure and wear-resistant sealing applications, such as hydraulic cylinders. General operating temperature range: -45~90°C.
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12. Metal Rubber Sealing Ring
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Made from stainless steel wire,不含任何橡胶成分 (contains no rubber components), with strong performance characteristics. For example:它可以正常工作在高真空、高低温、强辐射及各种腐蚀等环境下 (it can maintain normal operation in high vacuum, high and low temperatures, strong radiation, and various corrosive environments). The sealing ring surface is made from different materials such as stainless steel, copper, or polytetrafluoroethylene depending on the application, with the encapsulated metal rubber component serving as the core, offering advantages such as high sealing strength, effective performance, and reusability. The sealing ring core is made from components with different metal wire diameters and densities, suitable for different pressure scenarios. General operating range: -80~800°C. Due to high costs, these seals are relatively expensive. However, their excellent performance and wide range of applications have gained consistent recognition.