Rubber seal ring

EPDM is the cheapest; FKM and the like can be used after cleaning, right?

NBR nitrile rubber seals: Suitable for use with media such as petroleum-based hydraulic oils, glycol-based hydraulic oils, diester-based lubricants, gasoline, water, silicone greases, and silicone oils. It is the most widely used and lowest-cost rubber seal at present. It is not suitable for polar solvents, such as ozone, nitrohydrocarbons, MEK, and chloroform. The typical operating temperature range is -40~120 °C. HNBR hydrogenated nitrile rubber seals: possess excellent resistance to corrosion, tearing, and compressive deformation, as well as good resistance to ozone, sunlight, and weathering. It has better wear resistance than nitrile rubber. Suitable for washing machinery, automotive engine systems, and refrigeration systems that use the new environmentally friendly coolant R134a. It is not recommended for use in alcoholic, ester, or aromatic solutions. The typical operating temperature range is -40~150 °C. SIL silicone rubber seals: possess excellent heat resistance, cold resistance, ozone resistance, and resistance to atmospheric aging. It has excellent insulation properties. However, its tensile strength is lower than that of ordinary rubber, and it lacks oil resistance. Suitable for household appliances such as electric water heaters, irons, microwave ovens, etc. It is also suitable for various products that come into contact with the human body, such as water kettles and water dispensers. It is not recommended for use in most concentrated solvents, oils, strong acids, and sodium hydroxide. The typical operating temperature range is -55~250 °C. VITON fluororubber seals: They have better high-temperature resistance than silicone rubber, as well as excellent weather resistance, ozone resistance, and chemical resistance; however, their cold resistance is poor. It has resistance to most oils and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons, and animal and vegetable oils. Suitable for sealing requirements in diesel engines, fuel systems, and chemical plants. It is not recommended for use with similar low-molecular-weight esters and nitro-containing mixtures. The typical operating temperature range is -20~250 ℃. FLS fluorosilicone rubber seals: Their properties combine the advantages of fluororubber and silicone rubber, offering excellent resistance to oils, solvents, fuel oils, as well as high and low temperatures. It can resist the erosion of oxygen-containing compounds, solvents containing aromatic hydrocarbons, and chlorinated solvents. It is generally used in aviation, aerospace, and **applications. Exposure to similar substances and brake fluid is not recommended. The typical operating temperature range is -50~200 ℃. EPDM ethylene propylene diene monomer rubber seals: possess excellent weather resistance, ozone resistance, water resistance, and chemical resistance. It can be used for alcohols and similar substances, as well as for sealing in high-temperature steam environments. Suitable for bathroom fixtures, car radiators, and automotive braking systems. It is not recommended for use in food applications or exposure to mineral oils. The typical operating temperature range is -55~150 ℃. CR neoprene sealing rings: possess excellent resistance to sunlight and weather conditions. It is resistant to refrigerants such as dichlorodifluoromethane and ammonia, as well as to dilute acids and silicone-based lubricants; however, it swells significantly in mineral oils with a low aniline point. It tends to crystallize and harden at low temperatures. Suitable for various environments exposed to the atmosphere, sunlight, and ozone, as well as for various sealing components that are resistant to fire and chemical corrosion. It is not recommended for use with strong acids, nitrohydrocarbons, esters, chloroform, and similar chemicals. The typical operating temperature range is -55~120 ℃. IIR butyl rubber seal: excellent airtightness, good heat resistance, resistance to sunlight and ozone, and good insulating properties ； It has excellent resistance to polar solvents such as alcohols, ethers, and esters, and can be exposed to animal or vegetable oils or oxidizable substances. Suitable for chemical-resistant or vacuum equipment. It is not recommended to use it simultaneously with petroleum solvents, kerosene, or aromatics. The typical operating temperature range is -50~110 ℃. ACM acrylate rubber seals: exhibit excellent resistance to oils, as well as good heat and weather resistance; however, their mechanical strength, compressive set, and water resistance are somewhat inferior. It is generally used in automotive transmission systems and power steering systems. Not suitable for hot water, brake fluid, or phosphates. The typical operating temperature range is -25~170 ℃. NR natural rubber seals: possess excellent wear resistance, elasticity, tensile strength, and elongation. However, it ages easily in air, becomes sticky when exposed to heat, expands and dissolves easily in mineral oil or gasoline, is resistant to alkalis but not to strong acids. Suitable for use in liquids containing hydroxide ions such as automotive brake fluid and ethanol. The typical operating temperature range is -20~100 ℃. PU polyurethane rubber seals: Polyurethane rubber possesses excellent mechanical properties; its wear resistance and high-pressure tolerance are far superior to those of other types of rubber. It also has good aging resistance, ozone resistance, and oil resistance, but it is prone to hydrolysis at high temperatures. It is generally used in high-pressure and wear-resistant sealing applications, such as hydraulic cylinders. The typical operating temperature range is -45~90 ℃. Fluororubber is completely tolerant to ethanol