Rubber Material Physical Properties

Chemical structure
Vinyl. Propylene Copolymer

Main features
Good Aging resistance﹒ Ozone resistance. Resistance to polar liquids

Density
0.86～0.87

Mooney viscosity ML1+4 (100℃)
50～150

Possible JIS Hardness range
30～90

Tensile strength(kg/cm²)
50～200

Elongation(%)
800～100

Resilience
Good

Crack
Passable

Abrasion resistance
Good

Bending crack resistance
Good

Heat resistance (℃) (maximum operating temperature)
150

Cold resistance (brittle temperature ℃)
-0～-60

Heat resistance
Brilliant

Lightfastness
Brilliant

Ozone resistance
Brilliant

Flame resistance
Bad

Electrical insulation (Ωcm) (volume intrinsic resistance)
10¹²～10¹⁵

Gas permeability resistance
Good

Radiation resistance
Bad

Gasoline / Light oil
Bad

Benzene toluene
Passable

Liquid / Grease
Bad

Alcohol
Brilliant

Ether
Good

Ketone (MEK)
Brilliant

Acetic acid/ Ehyl ester
Brilliant

Water
Brilliant

Organic acid
Bad

High Concentration Inorganic Acid
Good

Low Concentration Inorganic Acid
Brilliant

High concentration alkali
Brilliant

Low concentration alkali
Brilliant

Application Industries and Common Parts
Automotive, Construction, Machinery: Window Seals, Door Seals, Engine Dust Covers, Radiator Hose Gaskets, Vibration Pads, Sealing Rings

Chemical structure
Diacetylene / Acrylonitrile copolymer

Main features
Good Oil resistance Abrasion resistance Aging resistance

Density
1.00～1.20

Mooney viscosity ML1+4 (100℃)
30～100

Possible JIS Hardness range
15～100

Tensile strength(kg/cm²)
50～250

Elongation(%)
800～100

Resilience
Good

Crack
Good

Abrasion resistance
Brilliant

Bending crack resistance
Good

Heat resistance (℃) (maximum operating temperature)
130

Cold resistance (brittle temperature ℃)
-10～-20

Heat resistance
Brilliant

Lightfastness
Good

Ozone resistance
Bad

Flame resistance
Passable

Electrical insulation (Ωcm) (volume intrinsic resistance)
10²～10¹⁰

Gas permeability resistance
Good

Radiation resistance
Passable～Good

Gasoline / Light oil
Brilliant

Benzene toluene
Bad～Passable

Liquid / Grease
Bad

Alcohol
Brilliant

Ether
Bad～Passable

Ketone (MEK)
Bad

Acetic acid/ Ehyl ester
Bad～Passable

Water
Brilliant

Organic acid
Bad～Passable

High Concentration Inorganic Acid
Passable

Low Concentration Inorganic Acid
Good

High concentration alkali
Good

Low concentration alkali
Good

Application Industries and Common Parts
Automotive, Industrial Machinery, Hydraulic And Pneumatic: Oil Seals, O-rings, Fuel System Gaskets, Pump Seals, Connector Gaskets

Chloroprene Rubber (CR)

Chemical structure
Polybutadiene

Main features
Weather resistance,Ozone resistance,Heat resistance,Chemical resistance

Density
1.15～1.25

Mooney viscosity ML1+4 (100℃)
45～120

Possible JIS Hardness range
30～90

Tensile strength(kg/cm²)
50～250

Elongation(%)
1000～100

Resilience
Brilliant

Crack
Good

Abrasion resistance
Good～Brilliant

Bending crack resistance
Good

Heat resistance (℃) (maximum operating temperature)
130

Cold resistance (brittle temperature ℃)
-35～-55

Heat resistance
Brilliant

Lightfastness
Good

Ozone resistance
Brilliant

Flame resistance
Good

Electrical insulation (Ωcm) (volume intrinsic resistance)
10¹⁰～10¹²

Gas permeability resistance
Good

Radiation resistance
Passable～Good

Gasoline / Light oil
Good

Benzene toluene
Bad

Liquid / Grease
Bad

Alcohol
Brilliant

Ether
Bad～Passable

Ketone (MEK)
Passable～Good

Acetic acid/ Ehyl ester
Bad

Water
Brilliant

Organic acid
Bad～Passable

High Concentration Inorganic Acid
Good

Low Concentration Inorganic Acid
Brilliant

High concentration alkali
Brilliant

Low concentration alkali
Brilliant

Application Industries and Common Parts
Automotive, Machinery, Electronic Components: Gaskets, Vibration Pads, Machinery Shock Pads, Electronic Anti-vibration Pads

 Fluororubber (VITON) (FKM)

Chemical structure
6-fluoropropylene fluoride Ethylene copolymer

Main features
Good heat resistance Oil resistance Drug resistance

Density
1.80～1.82

Mooney viscosity ML1+4 (100℃)
65～180

Possible JIS Hardness range
50～90

Tensile strength(kg/cm²)
70～200

Elongation(%)
500～100

Resilience
Passable

Crack
Good

Abrasion resistance
Brilliant

Bending crack resistance
Good

Heat resistance (℃) (maximum operating temperature)
300

Cold resistance (brittle temperature ℃)
-10～-50

Heat resistance
Brilliant

Lightfastness
Brilliant

Ozone resistance
Brilliant

Flame resistance
Brilliant

Electrical insulation (Ωcm) (volume intrinsic resistance)
10¹⁵～10¹⁸

Gas permeability resistance
Brilliant

Radiation resistance
Passable～Good

Gasoline / Light oil
Brilliant

Benzene toluene
Brilliant

Liquid / Grease
Good

Alcohol
Brilliant

Ether
Bad～Passable

Ketone (MEK)
Bad

Acetic acid/ Ehyl ester
Bad

Water
Brilliant

Organic acid
Bad

High Concentration Inorganic Acid
Brilliant

Low Concentration Inorganic Acid
Brilliant

High concentration alkali
Bad

Low concentration alkali
Passable

Application Industries and Common Parts
Automotive, Aerospace, Chemical Equipment: High-temperature O-rings, Oil & Chemical-resistant Gaskets, Fuel System Seals, Valve Seals

 Natural Rubber (NR)

Chemical structure
Polyisonaphthalene

Main features
Has the most like the so-called Elasticity of rubber Abrasion resistance Good water resistance

Density
0.92

Mooney viscosity ML1+4 (100℃)
90～150

Possible JIS Hardness range
30～90

Tensile strength(kg/cm²)
30～300

Elongation(%)
1000～100

Resilience
Brilliant

Crack
Brilliant

Abrasion resistance
Brilliant

Bending crack resistance
Brilliant

Heat resistance (℃) (maximum operating temperature)
120

Cold resistance (brittle temperature ℃)
-50～-70

Heat resistance
Good

Lightfastness
Good

Ozone resistance
Bad

Flame resistance
Bad

Electrical insulation (Ωcm) (volume intrinsic resistance)
10¹⁰～10¹⁵

Gas permeability resistance
Good

Radiation resistance
Passable～Good

Gasoline / Light oil
Bad

Benzene toluene
Bad

Liquid / Grease
Brilliant

Alcohol
Bad

Ether
Bad～Passable

Ketone (MEK)
Bad～Passable

Acetic acid/ Ehyl ester
Brilliant

Water
Bad

Organic acid
Bad

High Concentration Inorganic Acid
Good

Low Concentration Inorganic Acid
Good

High concentration alkali
Good

Low concentration alkali
Good

Application Industries and Common Parts
Industrial Equipment, Machinery, Construction: Shock Pads, Vibration Pads, Machinery Sealing Gaskets, Buffer Pads

Chemical structure
Butadiene Styrene vinyl copolymer

Main features
Better abrasion resistance,aging resistance and lower price than natural rubber

Density
0.93～0.94

Mooney viscosity ML1+4 (100℃)
30～60

Possible JIS Hardness range
40～90

Tensile strength(kg/cm²)
50～200

Elongation(%)
600～100

Resilience
Good

Crack
Passable

Abrasion resistance
Brilliant

Bending crack resistance
Good

Heat resistance (℃) (maximum operating temperature)
100

Cold resistance (brittle temperature ℃)
-30～-60

Heat resistance
Good

Lightfastness
Good

Ozone resistance
Bad

Flame resistance
Bad

Electrical insulation (Ωcm) (volume intrinsic resistance)
10¹⁰～10¹⁵

Gas permeability resistance
Passable

Radiation resistance
Good

Gasoline / Light oil
Bad

Benzene toluene
Bad

Liquid / Grease
Bad

Alcohol
Brilliant

Ether
Bad

Ketone (MEK)
Passable～Good

Acetic acid/ Ehyl ester
Bad～Passable

Water
Brilliant

Organic acid
Bad

High Concentration Inorganic Acid
Bad

Low Concentration Inorganic Acid
Good

High concentration alkali
Good

Low concentration alkali
Good

Application Industries and Common Parts
Automotive, Machinery Equipment: Gaskets, Vibration Pads, Buffer Blocks, Sealing Rings

 Silicone Rubber (SI)

Chemical structure
Polysiloxane

Main features
Highly Heat resistance and cold resistance non-toxic

Density
0.95～0.98

Mooney viscosity ML1+4 (100℃)
Liquid

Possible JIS Hardness range
30～90

Tensile strength(kg/cm²)
40～100

Elongation(%)
500～50

Resilience
Brilliant

Crack
Bad～Passable

Abrasion resistance
Bad～Passable

Bending crack resistance
Bad～Good

Heat resistance (℃) (maximum operating temperature)
280

Cold resistance (brittle temperature ℃)
-70～-120

Heat resistance
Brilliant

Lightfastness
Brilliant

Ozone resistance
Brilliant

Flame resistance
Bad～Good

Electrical insulation (Ωcm) (volume intrinsic resistance)
10¹⁴～10¹⁵

Gas permeability resistance
Passable

Radiation resistance
Passable～Brilliant

Gasoline / Light oil
Bad～Passable

Benzene toluene
Bad～Passable

Liquid / Grease
Bad～Good

Alcohol
Brilliant

Ether
Bad～Passable

Ketone (MEK)
Good

Acetic acid/ Ehyl ester
Passable

Water
Good

Organic acid
Good

High Concentration Inorganic Acid
Passable

Low Concentration Inorganic Acid
Good

High concentration alkali
Brilliant

Low concentration alkali
Brilliant

Application Industries and Common Parts
Automotive, Machinery, Electronics, Food-grade Sealing: High-temp Seals, O-rings, Heat-resistant Gaskets, Food-grade Seals, Small Heat-resistant Pads

 Ethylene Acrylic Rubber (AEM)

Chemical structure
Alkyl acrylate Copolymer

Main features
Oil resistance at high temperature

Density
1.09～1.10

Mooney viscosity ML1+4 (100℃)
45～60

Possible JIS Hardness range
40～90

Tensile strength(kg/cm²)
70～120

Elongation(%)
600～100

Resilience
Passable

Crack
Passable

Abrasion resistance
Good

Bending crack resistance
Good

Heat resistance (℃) (maximum operating temperature)
180

Cold resistance (brittle temperature ℃)
0～-30

Heat resistance
Brilliant

Lightfastness
Brilliant

Ozone resistance
Brilliant

Flame resistance
Bad～Passable

Electrical insulation (Ωcm) (volume intrinsic resistance)
10⁸～10¹⁰

Gas permeability resistance
Good

Radiation resistance
Bad～Good

Gasoline / Light oil
Brilliant

Benzene toluene
Bad

Liquid / Grease
Bad

Alcohol
Bad

Ether
Bad

Ketone (MEK)
Bad

Acetic acid/ Ehyl ester
Bad

Water
Passable

Organic acid
Bad

High Concentration Inorganic Acid
Passable

Low Concentration Inorganic Acid
Good

High concentration alkali
Passable

Low concentration alkali
Good

Application Industries and Common Parts
Car gearbox Pads or gaskets Related to the crankshaft. Steam valve Stem oil reflector, etc.

 Polyurethane Rubber (PU)

Chemical structure
PU Polyurethane

Main features
Excellent mechanical strength

Density
1.00～1.30

Mooney viscosity ML1+4 (100℃)
25～60 Liquid

Possible JIS Hardness range
60～100

Tensile strength(kg/cm²)
200～450

Elongation(%)
800～300

Resilience
Brilliant

Crack
Brilliant

Abrasion resistance
Brilliant

Bending crack resistance
Brilliant

Heat resistance (℃) (maximum operating temperature)
80

Cold resistance (brittle temperature ℃)
-30～-60

Heat resistance
Good

Lightfastness
Brilliant

Ozone resistance
Brilliant

Flame resistance
Bad～Passable

Electrical insulation (Ωcm) (volume intrinsic resistance)
10⁹～10¹²

Gas permeability resistance
Good

Radiation resistance
Good

Gasoline / Light oil
Brilliant

Benzene toluene
Bad～Passable

Liquid / Grease
Passable～Good

Alcohol
Passable

Ether
Bad

Ketone (MEK)
Bad

Acetic acid/ Ehyl ester
Passable～Good

Water
Passable

Organic acid
Bad

High Concentration Inorganic Acid
Bad

Low Concentration Inorganic Acid
Passable

High concentration alkali
Bad

Low concentration alkali
Bad

Application Industries and Common Parts
Industrial Equipment, Machinery, Automotive: Wear-resistant Gaskets, Roller Coatings, Shock Pads, Mechanical Buffer Parts

 Hypalon (Chlorosulfonated Polyethylene) (CSM)

Chemical structure
Hypalon Polyethlene Rubber

Main features
Aging resistance, Ozone resistance, Weather resistance, Drug resistance, Good abrasion resistance

Density
1.11～1.18

Mooney viscosity ML1+4 (100℃)
30～55

Possible JIS Hardness range
50～90

Tensile strength(kg/cm²)
70～200

Elongation(%)
500～100

Resilience
Good

Crack
Good

Abrasion resistance
Brilliant

Bending crack resistance
Good

Heat resistance (℃) (maximum operating temperature)
150

Cold resistance (brittle temperature ℃)
-20～-60

Heat resistance
Brilliant

Lightfastness
Brilliant

Ozone resistance
Brilliant

Flame resistance
Bad～Passable

Electrical insulation (Ωcm) (volume intrinsic resistance)
10¹⁴

Gas permeability resistance
Brilliant

Radiation resistance
Passable～Good

Gasoline / Light oil
Good

Benzene toluene
Bad～Passable

Liquid / Grease
Bad～Passable

Alcohol
Brilliant

Ether
Bad

Ketone (MEK)
Passable～Good

Acetic acid/ Ehyl ester
Bad

Water
Brilliant

Organic acid
Bad

High Concentration Inorganic Acid
Brilliant

Low Concentration Inorganic Acid
Brilliant

High concentration alkali
Brilliant

Low concentration alkali
Brilliant

Application Industries and Common Parts
Outdoor Equipment, Industrial Equipment, Special Sealing: Weather-Resistant Gaskets, Ozone-Resistant Seals, Equipment Sealing Gaskets