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℃)	100	300	200	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	△	◎	◎	×	◎	◎