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Rubber Properties Table

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Rubber Properties Table◎:Very Good○:Good△:Fare×:Poor

Type of Rubber (Brief Term in ASTM) Nitrile Butadiene Rubber Fluoro Rubber Silicone Rubber Ethylene Propylene Diena Monomer Polyurethane
(NBR) (FPM) (Si) (EPDM) (PU)
Characteristics Superior oil endurance, friction resistance, water resistance. But vulnerable to ozone, ketone and ester acute solvent. Resistant against heat, acid, oil hot water and steam. Weather and ozone resistant. Smaller permanent deformation when compressed. Poor in cold temperature tolerance and expensive in price. Resistant against heat, weather and aging. Better surface hydrophobic. Under constant temperature, it presents lower tensile strength and is vulnerable to tearing, but resistant against friction and oil. Better ozone and weather resistance. Superior elasticity. Durable against chemical agents (alcohol and ketone), As it is vulnerable to oil, do not use in the preparation of food. Excellent elasticity and resistance against tearing, friction, low temperature. Dissolvable in water and tends to decompose in steamy, hot water or strong acid environments. It is suitable for low-speed rotation.
Properties of Pure Rubber Specific Gravity 1.00~1.20 1.80~1.82 0.95~0.98 0.86~0.87 1.05~1.25
Mooney Viscosity ML1+(100℃) 30~100 65~180 15~80 50~150 25~60((liquefied))
Physical Properties Potential JIS Hardness Range 15~100 50~90 15~90 30~90 60~100
Tensile Strength (Kg/cm2) 50~250 70~200 40~100 50~200 200~450
Elongation Rate (%) 800~100 500~100 500~50 800~100 800~300
Anti-Elasticity
Tearing Strength ×~△
Wearing Resistance ×~△
Bending/Cracking Resistance ×~○
Heat Endurance (0℃) 130 300 280 150 80
Cold Tolerance (Brittle Temperature : ℃) -10~-20 -10~-50 -70~-120 -40~-60 -30~-60
Gas Aging Resistance  
Light Durability  
Ozone Resistance ×
Flame Resistance ×~○ ×  
Electric Insulation (Ωcm) 102~1010 1015~1018 1011~1015 1012~1015 1011~1014
Oxygen Permeability Resistance  
Radioactive Ray Endurance △~○ △~○ △~◎ ×  
Oil and solvent endurance of rubber Gasoline.Light Oil ×~△ × ×~△
Benzene.Toluene ×~○ ×~△ ×~△
Fluid Grease × ×~○ × ×
Alcohol ×
Ether ×~△ ×~△ ×~△
Ketone (MEK) × ×
Acetic acid.ethyl ×~△ × ×
Water ×
Type of Rubber (Brief Term in ASTM) Acrylic Rubber Chloroprene Rubber Hypalon Natural Rubber Styrene Buradiene Rubber Synthetic Rubber
(ACM,ANM) (CR) (CSM) (NR) (SBR) (IR)
Characteristics Excellent resistance against high-temperature oxidization and oil. Maintains stable performance in lubricant oil mixed with sulfur, phosphorus and additive. Poor cold tolerance. Vulnerable to chemical agents and steam. Better resistance against weather, heat, oil and solvent, as compared to natural rubber. Excellent fire retardant. But becomes hard under low temperature and poor in storage stability. Resistant against ozone, weather, friction, chemical agents, cold temperature and burning, but is vulnerable to aromatic solvent. Bigger permanent deformation when compressed. Poor in low-temperature brittleness. Resistant against cold temperature. Durable for flexibility. Better air permeability. Less heat generation after several deformations. Better alkali resistance, but is vulnerable to dense sulfuric acid, non-acute solvent, oil and solvent. Excellent aging resistant performance under combined effect of light, heat and oxygen. Lower in price. But vulnerable to strong acid, ozone and grease related substances. Superior bounce-back performance. Durable for tearing, friction, crack enlarging. Superior dissolution swelling resistance and electric insulation, but vulnerable to oil and ozone.
Properties of Pure Rubber Specific Gravity 1.09~1.10 1.15~1.25 1.11~1.18 0.92 0.93~0.94 0.92~0.93
Mooney Viscosity ML1+(100℃) 45~60 45~120 30~55 90~150 30~60 55~90
Physical Properties Potential JIS Hardness Range 45~60 10~90 50~90 10~100 30~100 20~200
Tensile Strength (Kg/cm2) 70~120 50~250 70~200 30~300 50~200 150~200
Elongation Rate (%) 600~100 1000~100 500~100 1000~100 800~100 1000~100
Anti-Elasticity
Tearing Strength
Wearing Resistance ○~◎
Bending/Cracking Resistance
Heat Endurance (0℃) 180 130 150 120 120 120
Cold Tolerance (Brittle Temperature: 0℃) 0~-35 -35~-55 -20~-40 -50~-70 -30~-60 -50~-70
Gas Aging Resistance
Light Durability
Ozone Resistance × × ×
Flame Resistance ×~△   × × ×
Electric Insulation (Ωcm) 108~1010 1010~1015 1014~1015 1010~1015 1010~1015 1010~1016
Oxygen Permeability Resistance
Radioactive Ray Endurance ×~○ △~○ △~○ △~○ △~○
Oil and solvent endurance of rubbe Gasoline.Light Oil × × ×
Benzene.Toluene × × ×~△ × × ×
Fluid Grease × × ×~△ × ×
Alcohol × ×
Ether × ×~△ × △~○ × ×
Ketone (MEK) × △~○ △~○ ×~△ △~○ △~○
Acetic acid.ethyl × × × ×~△ ×~△
Water ×