Abbreviation	NR	SBR	NBR	CR	IR	IIR	SI	FKM	EPDM
Applications	Tyre, shoes' bottom, spring and hose.	Tyre, shoe bottoms, sport equipment accessorize.	Oil seal, mat, oil resistance hose, and O-ring.	Cable cover, Anti-vibration part in general industrial need.	Tyre (Aircraft and automobile) and very similar properties to natural rubber.	Inner tube of automobile tire. Seal and belt.	Mat, ant-vibration, isolation, medical and food industrial use.	Resist e to high temperature, oil, chemical, corrosion. Chemical parts, hose.	Cable cover, automobile parts, and motorcycle parts. Resist to ozone.
Characteristics	Good elongation and abrasion resistance.	Able to replace Nature rubber. Better price and long fatigue life.	Resist to oil and abrasion. Long fatigue life.	Good aging characteristics in ozone and weather environments, along with abrasion, chemical and flex cracking resistance. UL94 conform.	Similar properties to natural rubber. Lower impurities, higher price.	Good ozone, weather environments, abrasion, chemical, and cracking resistance.	Good high temperature, cold weather resistance. Conductive and Food grade.	Resist e to high temperature, oil, and chemical.	Good aging characteristics in ozone and weather environments, along with abrasion, and chemical resistance.
Chemical Name	Natural Rubber	Styrene-butadiene Rubber	Nitride-butadiene Rubber	Chloroprene Rubber, Neoprene	Isoprene Rubber	Butyl	Silicone	Vinton, Floral	Ethylene Propylene Rubber
Gravity	0.92-0.98	0.92-0.98	1.00-1.3	1.15-1.3	0.91-0.95	0.91-0.96	0.92-0.98	1.8-2.0	0.86-0.95
Viscosity ML1	90-150	30-70	30-95	50-120	50-90	45-70		65-180	45-145
Hardness	20-100	30-100	20-100	20-90	20-100	20-90	10~90	50-90	15-90
Tensile strength	30-290	30-250	40-260	40-270	40-250	40-180	40~100	700-200	50-180
Elongation (%)	1000-100	800-10	700-100	800-100	1100-100	700-100	900~50	500-100	750-100
Rebounded	◎	○	○	◎	◎	▲	◎	▲	○
Tear strength	◎	▲	○	○	○	○	Χ~▲	○	▲
Abrasion strength	◎	◎	◎	○~◎	◎	○	Χ~▲	◎	○
Flex cracking resistance	◎	◎	○	○	◎	◎	Χ~▲	○	○
Service temperature	-50~125	-50~125	-15~125	-35~135	-50~125	-35~145	-30~300	-10~300	-50-140
Long fatigue life	○	○	◎	◎	○	◎	◎	◎	◎
Light fastness	○	○	○	○	○	◎	◎	◎	◎
Ozone resistance	Χ	Χ	Χ	◎	Χ	◎	◎	◎	◎
Flammability	Χ	Χ	▲	○	Χ	Χ	Χ~◎	◎	▲
Electrical insulation	9~10	9~15	2-17	9-15	9~15	14-19	2-15	15-18	9-16
Gas penetration	○	▲	○	○	○	◎	○	◎	○
Radiation resistance	▲~○	○	▲~○	▲~○	▲~○	Χ	▲~◎	▲~○	Χ
Gasoline resistance	Χ	Χ	◎	○	Χ	Χ	Χ~▲	◎	Χ
Abbreviation	NR	SBR	NBR	CR	IR	IIR	SI	FKM	EPDM
Toluene	Χ	Χ	Χ~○	Χ~▲	Χ	▲~○	Χ~▲	◎	▲
Ester resistance	◎	Χ	Χ	Χ	Χ	Χ	Χ~○	○	Χ
Alcohol resistance	Χ	◎	◎	◎	◎	◎	◎	◎	◎
Ether resistance	▲~○	Χ	Χ~▲	Χ~▲	Χ	▲~○	Χ~▲	Χ~▲	○
Ketone resistance	Χ~▲	▲~○	Χ~▲	▲~○	▲~○	◎	○	Χ	◎
Acid/Ethyl resistance	◎	Χ~▲	Χ~▲	Χ	Χ~▲	◎	▲	Χ	◎
Water	▲	◎	◎	◎	◎	◎	◎	◎	◎
Organic acid resistance	Χ	Χ	Χ~▲	Χ~▲	Χ	▲~○	○	Χ	Χ
High strength Inorganic acid resistance	▲	Χ	▲	○	Χ	◎	▲	◎	○
Low strength Inorganic acid resistance	○	○	○	◎	○	◎	○	◎	Χ
High strength inorganic base resistance	▲	▲	○	◎	▲	◎	◎	Χ	Χ
Low strength inorganic base resistance	○	○	○	◎	○	◎	◎	▲	Χ

GREAT:◎ GOOD:○ OK:▲ NOT GOOD:Χ