Rubber Material Physical Properties
| Type of rubber（ASTM） | Styrene rubber（SBR） | Chloroprene rubber（CR） | Acrylic rubber（ACM.ANM） | Hypalon（CSM） | Polyurethane rubber（PU） | |
|---|---|---|---|---|---|---|
| Chemical structure | Butadiene Styrene vinyl copolymer | Polybutadiene | Alkyl acrylate Copolymer | Hypalon Polyethlene Rubber | PU Polyurethane | |
| Main features | Better abrasion resistance,aging resistance and lower price than natural rubber | Weather resistance,Ozone resistance,Heat resistance,Chemical resistance | Oil resistance at high temperature | Aging resistance, Ozone resistance, Weather resistance, Drug resistance, Good abrasion resistance | Excellent mechanical strength | |
| Density | 0.93～0.94 | 1.15～1.25 | 1.09～1.10 | 1.11～1.18 | 1.00～1.30 | |
| Mooney viscosity ML1+4(100℃) | 30～60 | 45～120 | 45～60 | 30～55 | 25～60 Liquid | |
| Possible JIS Hardness range | 40～90 | 30～90 | 40～90 | 50～90 | 60～100 | |
| Tensile strength(㎏/㎝2) | 50～200 | 50～250 | 70～120 | 70～200 | 200～450 | |
| Elongation(％) | 600～100 | 1000～100 | 600～100 | 500～100 | 800～300 | |
| Resilience | Good | Brilliant | Passable | Good | Brilliant | |
| Crack | Passable | Good | Passable | Good | Brilliant | |
| Abrasion resistance | Brilliant | Good～Brilliant | Good | Brilliant | Brilliant | |
| Bending crack resistance | Good | Good | Good | Good | Brilliant | |
| Heat resistance (℃) (maximum operating temperature) |
100 | 130 | 180 | 150 | 80 | |
| Cold resistance (brittle temperature ℃) |
-30～-60 | -35～-55 | 0～-30 | -20～-60 | -30～-60 | |
| Heat resistance | Good | Brilliant | Brilliant | Brilliant | Good | |
| Lightfastness | Good | Good | Brilliant | Brilliant | Brilliant | |
| Ozone resistance | Bad | Brilliant | Brilliant | Brilliant | Brilliant | |
| Flame resistance | Bad | Good | Bad～Passable | Bad～Passable | Bad～Passable | |
| Electrical insulation (Ω㎝) (volume intrinsic resistance) |
1010～1015 | 1010～1012 | 108～1010 | 1014 | 109～1012 | |
| Gas permeability resistance | Passable | Good | Good | Brilliant | Good | |
| Radiation resistance | Good | Passable～Good | Bad～Good | Passable～Good | Good | |
| Gasoline / Light oil | Bad | Good | Brilliant | Good | Brilliant | |
| Benzene toluene | Bad | Bad | Bad | Bad～Passable | Bad～Passable | |
| Liquid / Grease | Bad | Bad | Bad | Bad～Passable | Passable～Good | |
| Alcohol | Brilliant | Brilliant | Bad | Brilliant | Passable | |
| Ether | Bad | Bad～Passable | Bad | Bad | Bad | |
| Ketone (MEK) | Passable～Good | Passable～Good | Bad | Passable～Good | Bad | |
| Acetic acid/ Ehyl ester | Bad～Passable | Bad | Bad | Bad | Passable～Good | |
| Water | Brilliant | Brilliant | Passable | Brilliant | Passable | |
| Organic acid | Bad | Bad～Passable | Bad | Bad | Bad | |
| High Concentration Inorganic Acid | Bad | Good | Passable | Brilliant | Bad | |
| Low Concentration Inorganic Acid | Good | Brilliant | Good | Brilliant | Passable | |
| High concentration alkali | Good | Brilliant | Passable | Brilliant | Bad | |
| Low concentration alkali | Good | Brilliant | Good | Brilliant | Bad | |
| Application | Car tires boots Rubberized cloth Sporting Goods﹒ Floor tile battery box Industrial supplies such as belts, and general rubber products. | Wire covered. Conveyor belt Anti-vibration rubber Window frame rubber Adhesive coated Rubber cloth and general industrial supplies Paint etc. | Car gearbox Pads or gaskets Related to the crankshaft. Steam valve Stem oil reflector, etc. | Weather and corrosion resistant Gaskets Roller and rubberized cloth, etc. | U-shaped tight O-rings for high pressure and roller couplings for industry. Squeegee for printing. Things that receive strong force, such as spacers for punching machines. | |
| Type of rubber（ASTM） | Nitrile Butadiene Rubber（NBR） | Silicone（Si） | Fluororubber（FPM）(VITON) | Vinyl. Acrylic rubber (EPDM﹒EPM) |
Natural Rubber(NR) | |
|---|---|---|---|---|---|---|
| Chemical structure | Diacetylene / Acrylonitrile copolymer | Polysiloxane | 6-fluoropropylene fluoride Ethylene copolymer | Vinyl. Propylene Copolymer | Polyisonaphthalene | |
| Main features | Good Oil resistance Abrasion resistance Aging resistance | Highly Heat resistance and cold resistance non-toxic | Good heat resistance Oil resistance Drug resistance | Good Aging resistance﹒ Ozone resistance. Resistance to polar liquids | Has the most like the so-called Elasticity of rubber Abrasion resistance Good water resistance | |
| Density | 1.00～1.20 | 0.95～0.98 | 1.80～1.82 | 0.86～0.87 | 0.92 | |
| Mooney viscosity ML1+4(100℃) | 30～100 | Liquid | 65～180 | 50～150 | 90～150 | |
| Possible JIS Hardness range | 15～100 | 30～90 | 50～90 | 30～90 | 30～90 | |
| Tensile strength(㎏/㎝2) | 50～250 | 40～100 | 70～200 | 50～200 | 30～300 | |
| Elongation(％) | 800～100 | 500～50 | 500～100 | 800～100 | 1000～100 | |
| Resilience | Good | Brilliant | Passable | Good | Brilliant | |
| Crack | Good | Bad～Passable | Good | Passable | Brilliant | |
| Abrasion resistance | Brilliant | Bad～Passable | Brilliant | Good | Brilliant | |
| Bending crack resistance | Good | Bad～Good | Good | Good | Brilliant | |
| Heat resistance (℃) (maximum operating temperature) |
130 | 280 | 300 | 150 | 120 | |
| Cold resistance (brittle temperature ℃) |
-10～-20 | -70～-120 | -10～-50 | -40～-60 | -50～-70 | |
| Heat resistance | Brilliant | Brilliant | Brilliant | Brilliant | Good | |
| Lightfastness | Good | Brilliant | Brilliant | Brilliant | Good | |
| Ozone resistance | Bad | Brilliant | Brilliant | Brilliant | Bad | |
| Flame resistance | Passable | Bad～Good | Brilliant | Bad | Bad | |
| Electrical insulation (Ω㎝) (volume intrinsic resistance) |
102～1010 | 1014～1015 | 1015～1018 | 1012～1015 | 1010～1015 | |
| Gas permeability resistance | Good | Passable | Brilliant | Good | Good | |
| Radiation resistance | Passable～Good | Passable～Brilliant | Passable～Good | Bad | Passable～Good | |
| Gasoline / Light oil | Brilliant | Bad～Passable | Brilliant | Bad | Bad | |
| Benzene toluene | Bad～Passable | Bad～Passable | Brilliant | Passable | Bad | |
| Liquid / Grease | Bad | Bad～Good | Good | Bad | Brilliant | |
| Alcohol | Brilliant | Brilliant | Brilliant | Brilliant | Bad | |
| Ether | Bad～Passable | Bad～Passable | Bad～Passable | Good | Bad～Passable | |
| Ketone (MEK) | Bad | Good | Bad | Brilliant | Bad～Passable | |
| Acetic acid/ Ehyl ester | Bad～Passable | Passable | Bad | Brilliant | Brilliant | |
| Water | Brilliant | Good | Brilliant | Brilliant | Bad | |
| Organic acid | Bad～Passable | Good | Bad | Bad | Bad | |
| High Concentration Inorganic Acid | Passable | Passable | Brilliant | Good | Good | |
| Low Concentration Inorganic Acid | Good | Good | Brilliant | Brilliant | Good | |
| High concentration alkali | Good | Brilliant | Bad | Brilliant | Good | |
| Low concentration alkali | Good | Brilliant | Passable | Brilliant | Good | |
| Application | O-rings resistant to mineral oil Oil seal & Gasket hose Oil resistant board Construction machinery Commonly used in industrial machinery | O ring / oil seal Industrial rollers Medical / Food machinery and high temperature oil-free environment | Heat resistant oil resistant Chemical resistance and cushion for rocket missiles. Corrosion-resistant gaskets in chemical plants. O ring/Diaphragm box lining hose. pump parts etc. | Wire covered Car windbreak belt Window frames etc. Weather resistance Water resistant Drug resistant | Large car tires Industrial index car tires Boot / Hose General supplies such as air springs and industrial supplies | |