Kinds & Characteristics of Rubber

● High Quality ◎ Quality O Good △ Nomal X Poor

Kinds of Rubbers(ASTM) NR IR SBR BR CR
Chemical Structure Poly Isoprene Poly Isoprene Styrene Butadiene Poly Butadiene Poly Chloroprene
Features High elasticity and good mechanical characteristics Close to NR but worse mechanical Better abrasion resistance and aging resistance and worse elasticity than NR Higher elasticity, better abrasion resistance and worse mechanical characteristics than NR Good weatherability, ozone proof, thermal resistance and chemical resistance
Properties of Pure Rubber Specific Gravity 0.91~0.92 0.92~0.93 0.93~0.94 0.91~0.94 1.15~1.25
MOONEY Viscosity(100°C) 90~150 55~90 30~60 35~55 45~80
Physical Properties of Vulcanized Rubber Hardness Range of Available 10~100 20~100 30~100 30~100 10~90
Tensile Strength (kgf/cm2) 30~300 50~200 50~200 20~200 50~250
Ultimate Elongation (%) 1000~100 1000~100 800~100 800~100 1000~100
Rebound Resilience ◎ ◎ O ● ◎
Tear Strength ◎ O △ O O
Abrasion Resistance ◎ ◎ O ◎ O~◎
Repel Elasticity ◎ ◎ O △ O
Available Temperature (°C) -50~+70 -50~+70 -60~+100 -70+100 -40~+120
Aging Resistance O O O O ◎
Ozone Resistance X X X X ◎
Flame Retardant X X X X O
Electric Resistance(Ω -cm) 1010~1015 1010~1015 1010~1015 1014~1015 1010~1012
Gas Permeability Resistance O O O O O
Oil, Solvent Resistance Gasoline X X X X O
Benzene Toluene X X X X X
Triclene X X X X X
Alcohol ◎ ◎ ◎ ◎ ◎
Ether X X X X X~△
Ketone(MEK) △~O △~O △~O △~O △~O
Ethyl Acetate X~△ X~△ X~△ X~△ X
Acid Resistance
Alkali Resistance		 Water ◎ ◎ ◎ ◎ ◎
Organic Acid X X X X X~△
High Concentrated Mineral Acid X X X X O
Low Concentrated Mineral Acid O O O O ◎
High Concentrated Acid O O O O ◎
Low Concentrated Acid O O O O ◎
Kinds of Rubbers(ASTM) IIR NBR NEM/H-NBR EPT/EPDM CSM
Chemical Structure Isobutylene Isoprene Acrylo-nitrile Butadiene Hydrogenated NBR Ethylene-Propylene Polyethylene Sulfonated
Features Good weatherability, ozone proof and gas permeability resistance Good oil proof, abrasion resistance and aging resistance High temperature oil roof and high elasticity Good aging resistance, ozone resistance and electronic characteristics Good aging resistance, ozone resistance, weatherability and chemical resistance
Properties of Pure Rubber Specific Gravity 0.91~0.93 1.00~1.20 0.92~0.94 0.86~0.87 1.11~1.18
MOONEY Viscosity(100°C) 45~75 30~100 50~130 50~150 30~55
Physical Properties of Vulcanized Rubber Hardness Range of Available 20~90 15~100 50~90 30~90 50~90
Tensile Strength (kgf/cm2) 50~150 50~250 50~280 50~200 70~200
Ultimate Elongation (%) 800~100 800~100 800~100 800~100 500~100
Rebound Resilience △ O ◎ O O
Tear Strength O O O △ O
Abrasion Resistance O ◎ ◎ O ◎
Repel Elasticity ◎ O O O O
Available Temperature (°C) -40~+130 -40~+120 -40~+170 -50+130 -50~+150
Aging Resistance ◎ ◎ ◎ ◎ ●
Ozone Resistance ◎ X O ◎ ●
Flame Retardant X △ △ X O
Electric Resistance(Ω -cm) 1016~1018 102~1010 102~1010 1014~1015 1014
Gas Permeability Resistance ◎ O O O ◎
Oil, Solvent Resistance Gasoline X ◎ ◎ X O
Benzene Toluene △~O X~o △ △ X~△
Triclene X X X X X~△
Alcohol ◎ ◎ ◎ ◎ ◎
Ether △~◎ X~△ △ O X
Ketone(MEK) ◎ X X ◎ △~O
Ethyl Acetate ◎ X~△ △ ◎ X
Acid Resistance
Alkali Resistance		 Water ◎ ◎ ◎ ◎ ◎
Organic Acid △~◎ X~△ △ X △
High Concentrated Mineral Acid ◎ △ △ O ◎
Low Concentrated Mineral Acid ◎ O O ◎ ◎
High Concentrated Acid ◎ O O ◎ ◎
Low Concentrated Acid ◎ O O ◎ ◎
Kinds of Rubbers(ASTM) ACM/ANM U Si FPM/FKM T
Chemical Structure Acryl-Alkylester Polyurethane Siloxane Fluoride Propylene, Fluoride Vinylidene Polysulfide
Features Superior oil proof at high temperature Very superior mechanical solidity Good high thermal resistance, cold resistance and oil proof Superior most thermal resistance and chemical resistance Good high oil proof, ozone resistance and electric characteristics, but poor solidity
Properties of Pure Rubber Specific Gravity 1.09~1.10 1.00~1.30 0.95~0.98 1.80~1.82 1.34~1.41
MOONEY Viscosity(100°C) 45~60 25~60(Liquid) (Liquid) 65~180 25~50(Liquid)
Physical Properties of Vulcanized Rubber Hardness Range of Available 40~90 60~100 30~90 50~90 30~90
Tensile Strength (kgf/cm2) 70~120 200~450 40~100 70~200 30~150
Ultimate Elongation (%) 600~100 800~300 500~50 500~100 700~100
Rebound Resilience △ ◎ ◎ △ △
Tear Strength △ ● X~△ O X~△
Abrasion Resistance O ● X~△ ◎ X~△
Repel Elasticity O ◎ X~O O X
Available Temperature (°C) -20~+180 -50~+80 -100~+250 -50+280 -50~+120
Aging Resistance ◎ O ◎ ◎ ◎
Ozone Resistance ◎ ◎ ◎ ◎ ◎
Flame Retardant X~△ X~△ X~O ◎ X
Electric Resistance(Ω -cm) 108~1010 109~1012 1011~1015 1015~1018 1015
Gas Permeability Resistance O O △ ◎ ◎
Oil, Solvent Resistance Gasoline ● ◎ △ ● ◎
Benzene Toluene X X~△ X~△ ◎ ◎
Triclene X O X~O O △~O
Alcohol X △ ◎ ◎ ◎
Ether X X X~△ X~△ X~△
Ketone(MEK) X X O X ◎
Ethyl Acetate X △~O △ X △~O
Acid Resistance
Alkali Resistance		 Water △ △ O ◎ O
Organic Acid X X O X X
High Concentrated Mineral Acid △ X △ ◎ X
Low Concentrated Mineral Acid O △ O ◎ △
High Concentrated Acid △ X ◎ X △
Low Concentrated Acid O X ◎ △ △