Rubber material quality	Material quality explanation	Good and bad	Frequently use
NBR (Nitrile Rubber)	Become by the propylene eyeball and the pyprolylene, propylene eyeball content by 18%~50%, propylene eyeball content higher, to petrifies resistance of the oil quality hydrocarbon fuel oil to be better, but the low temperature performance changes the difference, the general application temperature scope is -25~100 ℃. Ding Jingjiao is at present oil and one of O circle most commonly used rubbers.	Good: Has the good anti- oil, the anti- water, the anti- solvent and the anti- high-pressure oil characteristic. Has the good compression to be crooked, anti- rubs and the elongated strength. Bad: Ill gathers uses in the polar solvent, for example ketones, ozone, MEK and chloroform.	Uses in to manufacture the fuel oil tank, the lubricating-oil tank as well as in the petroleum is oil, the gasoline, the water, the silicon fat, the silicone oil, two ester is the lubricating oil, the glycol is the rubber components which oil and so on in the fluid medium uses, specially obturator. May say is the present use is broadest, the cost lowest rubber seal.
HNBR (Hydrogenate Nitrile)	Hydrogenation Ding Jingjiao removes the partial double strand for Ding Jingjiao in after the hydrogenation, after the hydrogenation its heat resistance, bears the period of five days to enhance very many compared to the common Ding eyeball rubber, the oil resistance and common Ding Jingjiao is close. The general application temperature scope is -25~150 ℃.	Good: Compares Ding Jingjiao to have a better abrasion resistance to have the extremely good anti- eclipse, anti-, anti- rips and reduces the crooked characteristic under the ozone, the sunlight and other atmospheric environments a good resistance generally speaking is suitable to washes clothes or washes the bowl in the cleansing agent . Bad: Does not suggest the use to the alcohol type, the ester perhaps in the aromatic solution.	The air conditioning refrigeration industry, widely uses in the environmental protection cold intermediary R134a system seal. Motor car engine system seal.
FPM / FKM (Fluoro Carbon Rubber)	Rubber of the molecular content fluorine, (namely monomer structure) has each kind of type according to the fluorine content. At present the Guang Yong six fluorizatings are the fluorine rubber most early business commodity name go on the market by the Du Pont Company by "Viton". The thermostability surpasses the silica gel, has extremely good bears the chemical properties, bears the majority of oils and the solvent (alkone, ester is an exception), bears the period of five days and bears the ozone; The resistance to cold then is not better, the general application temperature scope is -20~250 ℃. Specially matches only then bears the low temperature to -40 ℃.	Good: May resist heat to 250 ℃ all has the resistance regarding the major part oil quality and the solvent the ability, in particular all acids, fat, aromatic hydrocarbon and zoology and botany oil . Bad: Did not suggest the use to the ketones, the low molecular weight ester and contains the niter the mixture.	Automobile, locomotive, diesel engine and fuel system. Chemical plant seal.
EPDM (Ethylene propylene Rubber)	Become the principal chain by the ethylene and the propylene not to gather the double strand, therefore the thermal stability, bears the aging, bears the ozone, the stability extremely is outstanding, but is unable the sulfur vulcanize. In order to solve this problem, inducts on the EP principal chain few has third the ingredient double strand but to be possible the sulfur vulcanize namely to become EPDM, the general application temperature scope is -50~150 ℃. The antipode solvent like mellow, the alkone, the glycol and the phosphoric acid fats 液压油 resistance is extremely good.	Good： Has the good anti- period of five days and a anti- ozone extremely good water resistance and the anti- chemical material may use the alcohol type and the ketones thermostable vapor, has the good impermeable. Bad: Did not suggest uses in food use perhaps exposes in the fragrant hydrogen.	Seal high temperature steam environment. Health bath equipment seal or components. Applies the brake (vehicle) in the system rubber components. Radiator (automobile water tank) center seal.
SI (Silicone Rubber)	The silica gel principal chain unifies by si (-Si-O-Si) becomes. Has extremely good heat-resisting, is cold resistant, bears the ozone, bears the big oxygen aging Has the very good electric insulation performance. the intensity more common rubber difference also does not have the oil resistance	Good： The tensile strength may reach 1500PSL after the modulation formula and anti- rends the nature to be possible to reach 88LBS. The elasticity is good and has the good compression. Has the good resistance to the neutral solvent. Has the extremely good thermal resistance. Has the extremely good winter resistance. Has the extremely good resistance regarding the ozone and the oxide compound corrosion. Extremely good electric insulation performance. Heat insulation, radiation performance. Bad: Does not suggest the use to the majority of concentrations solvent, the oil quality, the concentration acid and after in the dilution sodium hydroxide.	The domestic electric appliances profession uses classified material or rubber components, like electric heating one, in electricity iron, microwave oven rubber components. Electronic profession seal or rubber components, like in handset pressed key, DVD , electric cable in seal and so on. Has the contact with the human body on the formula thing seal, like canteen, potable water machine and so on.
NR (Natural Rubber)	Is made by the rubber tree gathering rubber latex, is polymer. Has the very good resistance to wear, the very high elasticity, pulls apart the intensity and the elongation ratio. Is easy in the air to get older, meets the thermal change to mount, is easy in the mineral oil or the gasoline to inflate and the dissolution, bears the alkali but not to bear the strong acid.	Good： The good resistance to wear, the very high elasticity, pulls apart the intensity and the elongation ratio, a better gas tightness, better bears the alkalinity. Bad: Bears the weather aging not to be good. Oil resistant and bears the solvent to be worse.	Is manufactures the adhesive tape, the rubber tube, the rubber shoes raw material, and is suitable for manufacture belt hydroxide radical in the and so on absorption of shock components, the product which in automobile machine oil, ethyl alcohol liquid uses.
SBR (Styrene Butadiene Copolyme)	The pyprolylene and the styrene the thing, with natural rubbber compares, quality even, foreign matter few, but mechanical strength then is weaker, may with natural rubbber  mix the use.	Good： Low cost non- oil resistance material quality good water resistance, when degree of hardness 70 below good tension high degree of hardness a worse compression is crooked may use the major part neutral chemical substance and doing, the inciting organic alkone . Bad: Does not suggest the use strong acid, the ozone, in the oil class, the oil ester and the fat and the major part hydrocarbon.	Broadly uses in the tire industry, the shoes industry, the adhesive plaster industry and the conveyor belt profession and so on.
IIR (Butyl Rubber)	Becomes for the isobutene and the few isoprenes polymerization, holds few not full gathers the base to use for the vulcanize, because of methyl three-dimensional barrier member movement compared to other polymers few, therefore gas permeability less, to heat, sunlight, the ozone resistance of big, the electric appliance insulating property is good; The antipode solvent like is mellow, the alkone, the ester and so on resists in a big way, the general application temperature scope is -54~110 ℃.	Good：Has the impermeability to the major part common gas has the good resistance to the sunlight and the ozone to be possible to expose in the chemical material which perhaps may oxidize to the animal or the vegetable oil . Bad: Does not construct righteousness and the petroleum spirit, the rubber petroleum and the fragrant hydrogen also uses.	Uses in to manufacture bears the chemicals, the vacuum equipment rubber components.
CR (Neoprene 、 Polychloroprene)	Becomes by the chlorbutene monomer polymerization. After the curing rubber elastic resistance to wear is good, did not fear the sunlight the direct radiation, has specially well bears the atmospheric aging performance, did not fear the intense distortion, did not fear refrigerant and so on dichloro-difluro-methane and ammonia, bears the diluted acid, bears the silicon ester is the lubricating oil, but does not bear the phosphate is oil. When low temperature is easy to crystallize, the hardening, the storing stability badly, inflates the quantity in 苯胺点 the low mineral oil to be big. The general application temperature scope is -50~150 ℃.	Good： The elasticity is good and the good compression deformation. In the formula does not contain the sulfur therefore extremely easy to make the tool anti- animal and the vegetable oil characteristic cannot because of the neutral chemical material, the ester animal fat, the fat, the many kinds of oil qualities, the solvent affects the nature to have guards against burns the characteristic Bad: Does not suggest the use strong acid, the ester, the chloroform and in the ketones chemical material.	Bears the R12 refrigerant the seal. On electrical appliances thing rubber components or seal. Suitablly uses for to manufacture each kind of direct contact atmosphere, the sunlight, the ozone components. Is suitable bears to each kind burns, bears the rubber product which chemistry corrodes.
CSM (Hypalon 、 Polyethylene)	Chlorosulfonated polyethylene for Du Pont Company patent synthetic rubber. The thermal stability, bears the period of five days, bears the ozone to be good; The acid resistance is also good, commonly used to bears the oxidized drugs (nitric acid, sulfuric acid) place, the general application temperature scope is -45~120 ℃.	The extremely good anti- abradability has with Ding Jingjiao the same low friction surface is situated between between Ding Jingjiao and the neoprene regarding oil and the solvent resistance the suggestion causes in the water used to guard against the leakage shortcoming: Did not suggest exposes to the concentration oxidizing acid, the ester, the ketones and the fragrant hydrogen.
SI (Silicone Rubber)	The silica gel principal chain (-si-o-si) unifies by the silicon becomes. Has extremely good heat-resisting, is cold resistant, bears the ozone, bears the atmospheric aging. Has the very good electric insulation performance. The intensity more common rubber difference also does not have the oil resistance.	Good： The tensile strength may reach 1500PSI after the modulation formula and anti- rends the nature to be possible to reach the 88LBS elasticity to be good and to have the good compression crookedly to have the good resistance to the neutral solvent to have the extremely good thermal resistance to have the extremely good winter resistance has the extremely good resistance extremely good electric insulation performance heat insulation, the radiation good shortcoming regarding the ozone and the oxide Bad: Did not suggest use solvent, oil quality, concentration acid and after in dilution sodium hydroxide which concentrates to the major part.	The domestic electric appliances profession uses seal or rubber components, like in electric heating pot, electricity iron, microwave oven rubber components. Electronic profession seal or rubber components, like in handset pressed key, DVD , electric cable in seal and so on. Has the contact with the human body on various types thing seal, like canteen, potable water machine and so on.
FLS (Fluorinated Silicone Rubber)	Si the fluorine rubber for the silica gel after fluorizating processing, its general characteristics concurrently has the fluorine rubber and the silicone rubber merit; Its oil resistant, bears the solvent, bears the bunker oil and bears the high low temperature to be good, the general application temperature is -50~200 ℃.	Good： Is suitable to the special use, like the request can anti- contain the oxygen the chemical material, contains the fragrant hydrogen the solvent and contains the chlorine the solvent corrosion. Bad: Did not suggest exposes to oil, ketones and solution.	On outer space part.
FFPM (Perfluoroelastomer)	The similar teflon (PTFE) the material, the entire fluorine rubber has outstanding bears the chemical properties and the thermostability. The ordinary entire fluorine rubber operating temperature is -250 ℃ +,240 ℃, the special rubber may reach +320 ℃.	Good: Best heat-resisting characteristic outstanding anti- chemical characteristic low Outgassing characteristic outstanding anti- Plasma characteristic Bad: Bears the low temperature characteristic worse raw material price higher production difficulty to be higher	The entire fluorine series product widely utilizes to the semiconductor industry and the information correlation industry utilizes, contains in the thin film system regulation using the scope PVC, CVD and the eclipse makes by cutting Cheng Jige to plant the perfect vacuum seal system regulation.
ACM (Polyacrylate Rubber)	Primarily ingredient polymerization becomes the elastomer by Alkyl Ester the Acrylate, bears the stone oil, thermostablly, bears the period of five days good, in mechanical strength, compression deformation rate and water resistance aspect then is weaker, compared to generally bears oil slightly misses. The general application temperature scope is -25~170 ℃.	Good： Is suitable a good anti- oxidized and the anti- period of five days anti- curving aberration function has the extremely good resistance in the automobile power oil to the oil quality to be suitable in the automobile transmission system and the power steering wheel the Bad: Ill uses in the hot water ill to use in oil in not to have bears the low temperature the function ill to use in the phosphate	Automobile transmission system and dynamic system seal.
PU (Urethane Rubber)	The polyurethane rubber mechanical nature quite good, the high degree of hardness, the high elasticity, bear is other oak gummy substances is difficult to compare; Bears the aging, bears the ozone, the oil resistance quite is also good. The general application temperature scope is -45~90 ℃.	Good： Wear-resisting, bears the high-pressured Bad: Is not thermostable	In the industry bears the high pressure, the wear-resisting seal, like hydraulic cylinder seal. High-pressured high electrically charged system