Sealing ring is a kind of rubber ring with circular section. Because its section is O-type, it is called O-type sealing ring. It is the most widely used hydraulic and pneumatic transmission system.
The annular cover composed of one or several parts is fixed on one ring or washer of the bearing and contacts with another ring or washer or forms a narrow labyrinth gap to prevent the leakage of lubricating oil and the invasion of foreign matters. Sealing ring is a kind of rubber ring with circular section. Because its section is O-ring, it is called O-ring. It is the most widely used hydraulic and pneumatic transmission system. Usually in Taiwan and Japan, it is called O ring.
1. NBR nitrile rubber sealing ring is suitable for use in petroleum hydraulic oil, glycol hydraulic oil, diester lubricating oil, gasoline, water, silicon grease, silicon oil and other media. It is the most widely used and lowest cost rubber seal at present. Not suitable for polar solvents such as ketones, ozone, nitrohydrocarbons, MEK and chloroform. Generally, the temperature range is - 40 ~ 120 ℃.
2. HNBR hydrogenated NBR sealing ring has excellent corrosion resistance, tear resistance, compression deformation resistance, ozone resistance, sunlight resistance and weather resistance. It has better wear resistance than NBR. It is suitable for washing machine, automobile engine system and refrigeration system using new environmental protection refrigerant R134a. It is not recommended to use in alcohol, ester or aromatic solution. Generally, the temperature range is - 40 ~ 150 ℃.
3. SIL silicone rubber sealing ring has excellent heat resistance, cold resistance, ozone resistance and atmospheric aging resistance. It has good insulation performance. However, the tensile strength of rubber is worse than that of general rubber and does not have oil resistance. It is suitable for household appliances such as electric water heater, electric iron, microwave oven, etc. It is also suitable for all kinds of articles in contact with human body, such as water bottles, drinking fountains, etc. It is not recommended to be used in most concentrated solvents, oil products, concentrated acids and sodium hydroxide. Generally, the temperature range is - 55 ~ 250 ℃.
4. Viton fluorine rubber sealing ring has better high temperature resistance than silicon rubber, excellent weather resistance, ozone resistance and chemical resistance, and poor cold resistance. It is resistant to most oils and solvents, especially acids, aliphatic hydrocarbons, aromatic hydrocarbons, animal and vegetable oils. It is suitable for sealing requirements of diesel engine, fuel system and chemical plant. It is not recommended to use in ketones, low molecular weight esters and mixtures containing nitrate. Generally, the temperature range is - 20 ~ 250 ℃.
5. FLS fluorosilicone rubber seal ring has the advantages of both fluorosilicone rubber and fluorosilicone rubber. It has good oil resistance, solvent resistance, fuel oil resistance and high and low temperature resistance. It can resist the attack of oxygenated compounds, aromatic solvents and chlorinated solvents. It is generally used for aviation, aerospace and military purposes. It is not recommended to expose to ketones and brake oil. Generally, the temperature range is - 50 ~ 200 ℃.
6. EPDM EPDM sealing ring has good weather resistance, ozone resistance, water resistance and chemical resistance. It can be used for alcohols and ketones, and also for sealing in high temperature steam environment. It is suitable for bathroom equipment, car radiator and car brake system. Not recommended for food use or exposure to mineral oil. Generally, the temperature range is - 55 ~ 150 ℃.
7. CR neoprene sealing ring
It has excellent sunlight and weather resistance. It is not afraid of refrigerants such as dichlorodifluoromethane and ammonia. It is resistant to dilute acid and silicone grease lubricating oil, but it has a large expansion in mineral oil with low aniline point. It is easy to crystallize and harden at low temperature. It is suitable for all kinds of environments contacting with atmosphere, sunlight and ozone, as well as all kinds of fire-resistant and chemical corrosion-resistant sealing links. It is not recommended to use in strong acid, nitrohydrocarbon, ester, chloroform and ketone chemicals. Generally, the temperature range is - 55 ~ 120 ℃.
8. IIR butyl rubber sealing ring has excellent air tightness, heat resistance, sunlight resistance, ozone resistance and insulation performance; it has good resistance to polar solvents such as alcohol, ketone, ester, etc., and can be exposed to animal and vegetable oil or oxide. Suitable for chemical resistant or vacuum equipment. It is not recommended to use with petroleum solvents, kerosene or aromatics. Generally, the temperature range is - 50 ~ 110 ℃.
9. ACM acrylic rubber seal ring has excellent 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 automobile transmission system and power steering system. Not suitable for hot water, brake oil, phosphate. Generally, the temperature range is - 25 ~ 170 ℃.
10. NR natural rubber sealing ring rubber products have good wear resistance, elasticity, breaking strength and elongation. However, it is easy to age in the air and become sticky in case of heat. It is easy to expand and dissolve in mineral oil or gasoline. It is alkali resistant but not acid resistant. It is suitable for use in automobile brake oil, ethanol and other liquid with hydrogen peroxide ion. Generally, the temperature range is - 20 ~ 100 ℃.
11. The mechanical properties of PU polyurethane rubber seal ring polyurethane rubber are very good, and its wear resistance and high pressure resistance are far superior to other rubbers. It has good aging resistance, ozone resistance and oil resistance, but it is easy to hydrolyze at high temperature. Generally used for high pressure, wear-resistant sealing links, such as hydraulic cylinder. Generally, the temperature range is - 45 ~ 90 ℃.
12. The metal rubber sealing ring is made of stainless steel wire, which does not contain any rubber components and has strong use characteristics. For example: in high vacuum, high and low temperature, strong radiation, and a variety of corrosion and other environments to maintain normal operation. The surface of the sealing ring is made of different materials such as stainless steel, copper, polytetrafluoroethylene and so on according to the different purposes. The metal rubber component covered is used as the lining core, which has the advantages of high sealing strength, good effect and reusability. The core of seal ring is made of different wire diameter and density, which is suitable for different pressure situations. The general use range is - 80 ~ 800 ℃. This kind of sealing ring is expensive because of its high cost. But the good performance, the extensive use environment, have been unanimously recognized by people.
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High tech rubber and plastic industry Co., Ltd. (referred to as "high tech company") is a professional rubber and plastic product manufacturer integrating R & D, production, sales, logistics distribution and after-sales service. The company's products mainly include rubber and plastic seals, rubber tube assemblies, metal hose assemblies and related products, which are widely used in metallurgy, mining, power, coal, water conservancy, engineering machinery and other industries. Over the years, the company has won extensive praise and full affirmation from customers with excellent product quality and good service.
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Address: Gaobu Industrial Zone, Jingxian County
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