Sealing rubber ring summary
Sealing rubber ring summary
Ur PU polyurethane rubber
Advantages: good mechanical properties, high hardness, high elasticity, high wear resistance, high pressure resistance, aging resistance, ozone resistance, oil resistance, general use temperature range: - 45-90, disadvantages: not high temperature resistance, commonly used: high pressure resistance in industry, wear resistance, sealing parts, such as: hydraulic cylinder sealing parts. Chinese style
ACM polyacrylate rubber
Advantages: resistance to petrochemical oil, high temperature, good weather resistance, good oxidation resistance, bending resistance, excellent resistance to oil. General use temperature range: - 25-170 disadvantage: not suitable for hot water, brake oil, phosphate, not low temperature resistant. Mechanical strength, compression deformation rate and water resistance are weaker than general oil resistance. Commonly used: in automobile transmission oil, automobile transmission system and power steering wheel, and power system seal. Chinese style
Fluoro rubber FPM fluororubber fluoro carbon rubber Viton
Advantages: high temperature resistance > silicone rubber; excellent chemical resistance; resistance to most oils and solvents (except ketone grease); resistance to ozone; general use temperature - 20-250; low temperature resistance - 40; acid and alkali resistance; disadvantages: it is not recommended to use ketones, low molecular weight lipids and mixtures containing nitrate. Poor cold resistance commonly used: diesel engine fuel system and chemical plant sealing
Perfluoroelastomer ffkm or ffpm
Advantages: best heat resistance, excellent chemical resistance, low outgassing performance, excellent plasma resistance, strong corrosion resistance, super cleanliness, disadvantages: poor low temperature resistance, high price of raw materials, high production difficulty, common use: semiconductor industry and information industry, application range including pvc-cvd chemical vapor deposition in film manufacturing process , and etching process and various high vacuum sealing process. Chinese style
Si silicone rubber
Advantages: excellent heat resistance, cold resistance, ozone resistance, atmospheric aging resistance, good insulation. After modulation, the tensile strength is 1500psi, tear resistance is 88lbs, elasticity is good, compression deflection is good, resistance to neutral solvent is good, heat insulation and heat dissipation are excellent. Disadvantages of general temperature: it is not recommended to use most concentrated solvent oil, concentrated acid and diluted sodium hydroxide. Commonly used: household appliance sealing, electric kettle, electric iron, microwave oven, electronic industry: mobile phone button, shock pad in DVD, sealing element in cable connector, format product in contact with people: kettle water dispenser
Silicone rubber (FPM)
Advantages: it has the advantages of fluorine and silicon, oil resistance, solvent resistance, fuel oil resistance and high and low temperature resistance. It is used for special purposes, such as the corrosion of chemicals that can resist oxygen, solvents containing aromatic hydrogen and solvents containing chlorine. General use temperature: - 50-200 disadvantage: not recommended to be exposed to brake oil, ketone and corpus solution. Commonly used: space machine parts
CSM (hypalon polymylene) DuPont synthetic rubber
Advantages: good heat resistance, weather resistance, ozone resistance, cold resistance and acid resistance. It is commonly used in the place of oxidation resistant drugs, and has good resistance to ozone, oxidation and flame. Physical property is similar to that of neoprene, but it has better acid resistance, excellent abrasion resistance, low friction surface similar to that of NBR, oil resistance, fire resistance, electrical insulation, resistance to oil agent and solvent is between NBR and neoprene, water is recommended to prevent leakage, general service temperature: - 45-120, disadvantage: not recommended to be exposed to Concentrated oxidizing acid, nitrohydrogen, lipids, ketones and Fenxiang hydrogen. Chinese style
Neoprene polychloroprene (CR) is polymerized by chlorobutene monomer. A kind of
Advantages: the vulcanized rubber has good elasticity and wear resistance, and is not afraid of direct sunlight. It has excellent resistance to atmospheric aging, severe distortion, dichlorodifluoromethane, ammonia and other refrigerants, dilution and silicone grease lubricating oil, good elasticity and compression deformation. The formula contains no sulfur, so it is very easy to make. It has the characteristics of anti animal and vegetable oil. It will not affect the physical properties due to neutral chemicals, fat, grease, various oil products and solvents. It has the characteristics of anti combustion. General use temperature - 50-150 disadvantage: not resistant to phosphate system hydraulic oil. It is easy to crystallize and harden at low temperature and has poor stability. It is not recommended to use chemical species such as strong acid, nitrohydrocarbon, lipids, chloroform and ketones due to large expansion in mineral oil with low aniline point. Commonly used: R12 resistant seal rubber parts or seals on household appliances, suitable for making all kinds of direct contact with the atmosphere and sunlight. Ozone parts. It is suitable for all kinds of fire and chemical resistant rubber products. Chinese style
NBR nitrile rubber
It is made by copolymerization of acrylonitrile with butadiene. The content of acrylonitrile is 18% - 50%. The higher the content of acrylonitrile, the better the resistance to hydrocarbon fuel oil of petrochemical oil, but the lower the temperature performance. The general temperature: - 25-100 acrylic rubber is one of the most commonly used rubber for oil seal and O-ring at present. A kind of
Advantages: good oil resistance, water resistance, solvent resistance and high pressure oil resistance. good
