Common Materials And Characteristics Of Sealing Ring
2023-12-11
SIL silicone rubber seal
1. SIL silicone rubber sealing ring has excellent heat resistance, cold resistance, ozone resistance, atmospheric aging resistance, and good insulation performance, but the tensile strength of SIL silicone rubber sealing ring is worse than that of general rubber and does not have oil resistance;
2. SIL silicone rubber sealing ring is suitable for household appliances such as electric water heaters, electric irons, microwave ovens, etc. SIL silicone rubber sealing ring is also suitable for all kinds of articles that are in contact with the human body, such as kettles, drinking fountains, etc.; SIL silicone rubber is not recommended Sealing rings are used in most concentrated solvents, oils, concentrated acids and sodium hydroxide;
3. The general operating temperature range of SIL silicone rubber seals is -55~250.
IIR butyl rubber seal ring:
1. IIR butyl rubber sealing ring has particularly good airtightness, heat resistance, sunlight resistance, ozone resistance, and good insulation performance
2. IIR butyl rubber seals have good resistance to polar solvents such as alcohols, ketones, esters, etc., and can be exposed to animal and vegetable oils or oxides; IIR butyl rubber seals are suitable for chemical resistance or vacuum resistance The equipment is not recommended to be used with petroleum solvents, kerosene or aromatic hydrocarbons at the same time.
3. The general operating temperature range of IIR butyl rubber seals is -50~110.
NBR Butadiene Rubber Sealing Ring:
1. NBR butadiene cyanide rubber sealing ring is suitable for use in petroleum hydraulic oil, glycol hydraulic oil, diester lubricating oil, gasoline, water, silicone grease, silicone oil and other media;
2. NBR butadiene cyanide rubber sealing ring is currently the most widely used and lowest cost rubber seal;
3. NBR butadiene rubber seals are not suitable for polar solvents, such as ketones, ozone, nitro hydrocarbons, MEK and chloroform; NBR butadiene rubber seals are generally used in the temperature range of -40~120.
FLS fluorosilicone rubber sealing ring:
1. FLS fluorosilicone rubber sealing ring has the advantages of both fluorocarbon rubber and silicone rubber, and has good oil resistance, solvent resistance, fuel oil resistance and high and low temperature resistance;
2. FLS fluorosilicone rubber sealing ring can resist the erosion of oxygen-containing compounds, aromatic hydrocarbon-containing solvents and chlorine-containing solvents;
3. FLS fluorosilicone rubber seals are generally used for aviation, aerospace and military purposes, and it is not recommended to be exposed to ketones and brake fluid;
4. The general operating temperature range of FLS fluorosilicone rubber seals is -50~200.
EPDM EPDM rubber sealing ring:
1. EPDM rubber seal ring has good weather resistance, ozone resistance, water resistance and chemical resistance; EPDM rubber seal ring can be used for alcohols and ketones, and can also be used for high temperature steam Environmental sealing;
2. EPDM rubber seals are suitable for sanitary equipment, car radiators and automobile brake systems. EPDM rubber seals are not recommended for food use or exposed to mineral oil.
3. The general operating temperature range of EPDM rubber seals is -55~150.
CR neoprene seal ring:
1. CR chloroprene rubber seals are particularly resistant to sunlight and weather. They are not afraid of refrigerants such as dichlorodifluoromethane and ammonia. They are resistant to dilute acid and silicone grease. But CR chloroprene seals are at the aniline point. Large expansion in low mineral oil;
2. CR neoprene rubber seals are easy to crystallize and harden at low temperatures. They are suitable for all kinds of environments exposed to the atmosphere, sunlight, and ozone, and various flame-resistant and chemical-resistant sealing links. CR neoprene seals are not recommended for use in Among chemicals such as strong acids, nitro hydrocarbons, esters, chloroform and ketones. The general temperature range of CR neoprene seals is -55~120.
Acrylic ACM rubber seal ring:
1. ACM acrylic rubber seal ring has excellent resistance to oil, high temperature resistance and weather resistance, but the mechanical strength, compression deformation rate and water resistance are slightly poor;
2. ACM acrylic rubber seals are generally used in automobile transmission systems and power steering systems, and are not suitable for hot water, brake fluid, and phosphate esters;
3. The general operating temperature range of ACM acrylic rubber seals is -25~170.
Sealing NR natural rubber ring:
1. NR natural rubber sealing ring has good abrasion resistance, elasticity, breaking strength and elongation, but it is easy to age in the air and becomes sticky when heated.
2. NR natural rubber seals are easy to swell and dissolve in mineral oil or gasoline, and are resistant to alkali but not strong acids;
3. NR natural rubber seals are suitable for use in car brake fluids, ethanol and other liquids with hydroxide ions.
4. NR natural rubber sealing ring generally uses temperature range of -20~100.
PU polyurethane rubber sealing ring: The mechanical properties of PU polyurethane rubber sealing ring are very good, and the wear resistance and high pressure resistance are far better than other rubber U polyurethane rubber sealing rings. The aging resistance, ozone resistance and oil resistance The performance is also quite good, but high temperature easily hydrolyzed U polyurethane rubber seals are generally used for high pressure and wear resistant sealing links, such as hydraulic cylinders, and PU polyurethane rubber seals are generally used in the temperature range of -45 to 90.
HNBR hydrogenated cyanide rubber seal ring:
1. HNBR hydrogenated cyanide rubber seal ring has excellent corrosion resistance, tear resistance and compression deformation resistance, ozone resistance, sunlight resistance, weather resistance, and better wear resistance than cyanide rubber;
2. HNBR hydrogenated butadiene cyanide rubber seals are suitable for washing machinery, automobile engine systems and refrigeration systems using the new environmentally friendly refrigerant R134a;
3. It is not recommended to use HNBR hydrogenated cyanide rubber seals in alcohol, ester or aromatic solutions. Generally, the temperature range of HNBR hydrogenated cyanide rubber seals is -40~150.
VITON fluorine rubber seal ring:
1. The high temperature resistance of VITON fluorine rubber seals is better than that of silicone rubber. It has excellent weather resistance, ozone resistance and chemical resistance, but poor cold resistance;
2. VITON fluorine rubber seals are resistant to most oils and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons and animal and vegetable oils;
3. VITON fluorine rubber seals are suitable for the sealing needs of diesel engines, fuel systems and chemical plants. VITON fluorine rubber seals are not recommended for use in ketones, low molecular weight esters and nitrate-containing mixtures; VITON fluorine The general operating temperature range of plain rubber seals is -20~250.
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