9. Silicone rubber SI
(Silicone Rubber) silicone main chain silicon (-si-o-si) combination. Has excellent heat, cold, ozone resistance, resistance to atmospheric aging. Good electrical insulation properties. Tensile strength than ordinary rubber is poor and do not have oil. Advantages: * The recipes up after the tensile strength and tear resistance of up to 1500PSI 88LBS · good elasticity and good compression distortion of the neutral solvent resistance with good heat resistance with excellent excellent cold resistance for ozone and oxides of erosion resistance with excellent performance, excellent heat insulation, heat resistance Disadvantages: - not recommended for use in most of the concentration of solvents, oil , concentrated acid and sodium hydroxide being diluted. * Household appliances industry, the rubber used in seals, or parts, such as electric kettle, electric iron, microwave oven rubber parts. • Electronic industry seals or rubber parts, such as cell phone button, DVD cushioning inside, the cable connector seals. * In contact with the body on all kinds of seals products, such as water bottles, drinking fountains, etc.
10 Silicon fluorine rubber FLS
(Fluorinated Silicone Rubber) silicon fluorine rubber to silicone rubber by fluoridation, its general performance and fluorine rubber and silicone rubber with the advantages; its oil resistance, solvent resistance, and resistance to high temperature of fuel oil are good, general use of temperature -50 ~ 200 ℃. Advantages: - suitable for special purposes, such as requiring a chemical resistant to oxygen, hydrogen-containing aromatic solvents and chlorinated solvents erosion. Disadvantages: - not recommended for exposure to brake fluid, ketones, and the corpus of the parts on the solution space.
11. Viton FPM
(Fluoro Carbon Rubber) molecule of fluorine rubber, according to fluoride content (ie, monomer structure) and there are various types. Currently the most widely used system hexafluoride was first proposed by DuPont Viton to "Viton" trade name listed. High temperature resistance than silicone rubber, has excellent chemical resistance, resistance to most oils and solvents (ketones, esters excluded), weather resistance and ozone resistance; cold are more adverse, the general temperature range of -20 ~ 250 ℃. Specially formulated to be low temperature -40 ℃. Advantages: heat to 250 ℃ · available for most oil and solvents have the ability to resist, especially all of the acids, aliphatic hydrocarbons, aromatic hydrocarbons and animal and vegetable oils Disadvantages: - not recommended for use in ketones, low molecular weight esters and nitrate-containing mixture. * Cars, locomotives, diesel engines and fuel systems. * Chemical seals.
12. Perfluoroelastomers FFPM
(Perfluoroelastomer) advantages: the best heat-resistant properties excellent resistance to chemical properties of low Outgassing characteristics of excellent properties of anti Plasma Disadvantages: - poor low temperature characteristics of high production prices of raw materials more difficult perfluorinated products widely used in the semiconductor industry and related industries by the use of information, including the use of thin-film process in the range of PVC, CVD and etching processes and a variety of high-vacuum sealing process.
13. Acrylate rubber ACM
(Polyacrylate Rubber) composition by the Alkyl Ester Acrylate-based polymer made of elastomer, resistant to petrochemical oil, temperature, weather resistance are excellent in mechanical strength, deformation rate and relatively weak in terms of water, a little plastic than the average oil difference. General temperature range of -25 ~ 170 ℃. Advantages: • Suitable for automotive transmission oil being a good antioxidant and anti-climate of anti-bend with a variant of the function of the oil has excellent resistance for automotive powertrain and power steering being Disadvantages: * does not apply to hot water into the brake fluid is not being used for non-low temperature function does not apply phosphate into the automobile transmission and power system seals.
14. Urethane PU
(Urethane Rubber) polyurethane rubber, very good mechanical properties, high hardness, high elasticity, abrasion resistance are the hard rubber compared to the other; aging resistance, ozone resistance, oil resistance is also quite good. General temperature range of -45 ~ 90 ℃. Advantages: - wear resistance, high Disadvantages: • No high pressure industrial heat, wear seals, such as hydraulic cylinder seals. * High-pressure high-charge system
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