Elastomer Comparison Chart

Elastomer Common Name	Gum/Natural	Urethane	Neoprene	Nitrile/Buna-N	Chlorobutyl	Hypalon®	EPDM/EPT	Viton®/Fluorel®	Teflon®	Silicone	GRS/Buna-S
Chemical Name Definition	Polyisoprene	Polyester/Polyether Urethane	Poly-Chloroprene	Butadiene Acrylo-Nitrile	Chlora-Isobutylene Isoprene	Chloro-Sulfonated	Ethylene Propylene Polymer	Fluorinated Hydrocarbon	Tetrafluoro-Ethylene Resin	Poly-Siloxane	Styrene Butadiene
ANSI/ASTM D1418-77	NR/IR	AU/EU	CR	NBR	CIIR	CSM	EPDM	FKM	AFMU	SI	SBR
ASTM D-2000	AA	BG	BC-BE	BF-BG-BK-CH	AA-BA	CE	BA-CA-DA	HK	-	FC-FE-GE	AA-BA
SAE J-200 Military: MIL STD 417	RN	SB	SC	SB	RS	SC	RS	-	-	TA	RS
Hardness Range: Duro A	30-90	60-99	40-95	40-95	40-75	40-95	40-90	55-95	-	40-85	40-90
Specific Gravity of Base	0.93	1.06	1.23	1	0.92	1.12-1.28	0.86	1.85	-	1.14-2.05	0.94
Low Temp.- Min. Srvc °F	-20 to -60	-10 to -30	-10 to -50	+30 to -40	-10 to -60	-30 to -60	-20 to -60	+10 to -10	-120	-60 to -150	0 to -50
High Temp. - Max. Srvc °F	185	185	220	240	250 to 300	275	300	400 to 600	450	460	195
Abrasion	Excellent	Outstanding	Excellent	Good	Good	Excellent	Good To Excl	Good	Good	Poor	Gd To Excl
Absorption, Water	Very Good	Good	Good	Good	Very Good	Very Good	VG - Excel.	Very Good	-	Excellent	Gd To VG
Acid-Concentrated	Fair To Gd	Poor	Good	Good	Good	Very Good	Excellent	Excellent	Excellent	Fair	Fair to Good
Acid-Dilute	Fair to Gd	Fair	Excellent	Good	Excellent	Excellent	Excl - Gd	Excellent	Excellent	Excellent	Fair to Good
Adhesion To Fabrics	Excellent	VG To Excl	Excellent	Good	Good	Good		Gd To Excl	Fair to Good	Excellent	Good
Adhesion To Metals	Excellent	Excellent	Excellent	Excellent	Good	Excellent	Gd To Excl	Fair To Gd	Fair To Gd	Excellent	Excellent
Chemicals	Fair to Gd	Fair	Fair To Good	Fair To Gd	Excellent	Excellent	Excellent	Excellent	Excellent	Gd To Excl	Fair To Good
Colds	Excellent	Excellent	Good	Fair To Gd	Good	Good	Excellent	Good	Excellent	Outstanding	Very Good
Dielectric Strength	Excellent	Excellent	Fair	Poor	Excellent	VG To Excl	Excellent	Good	-	Good	Excellent
Dynamic Properties	Excellent	Excellent	-	Gd To Excl	Fair	Fair	Gd To Excl	Gd To Excl	-	Poor	Good
Electrical Insulation	Gd To Excl	Fair To Gd	Fair To Gd	Poor	Gd To Excl	Good	Excellent	Fair To Gd	-	Excellent	Gd To Excl
Flame	Poor	Fair	Good	Poor	Poor	Good	Poor	Excellent	Excellent	Fair To Gd	Poor
Heat	Good	Good	Very Good	Good	Very Good	Excellent	Excellent	Outstanding	Excellent	Outstanding	Fair To Gd
Heat Aging	Fair	Good	Good	Good	Very Good	Very Good	Excellent	Outstanding	Excellent	Outstanding	Fair To Good
Hydrocarbons-Aliphatic	Poor	Gd To Excl	Fair To Gd	Excellent	Poor	Fair To Gd	Poor	Excellent	Excellent	Poor	Poor
Hydrocarbons-Aromatic	Poor	Fair To Gd	Fair	Good	Poor	Fair	Poor	Excellent	Excellent	Poor	Poor
Hydrocarbons-Oxygenated	Fair To Gd	Poor	Poor	Poor	Good	Poor To Fr	Gd To VG	Poor	Excellent	Fair	Good
Impermeability	Fairly Low	Fairly Low	Low	Low	Very Low	Low To VL	Fairly Low	Very Low	-	Fairly Low	Fairly Low
Oil-Animal & Vegetable	Poor - Gd	Gd To Excl Gd To Excl	Good	Very Good	Very Good	Good	Good	Excellent	Excellent	Gd To Excl	Poor To Good
Oil And Gasoline	Poor	-	Good	Excellent	Poor	Good	Poor	Excellent	Excellent	Fair	Poor
Oxidation	Good	Excellent	VG To Excl	Good	Excellent	Excellent	Excellent	Outstanding	Excellent	Excellent	Fair
Ozone	Poor - Fair	Excellent	VG To Excl	Fair	Excellent	Outstanding	Outstanding	Outstanding	Excellent	Excellent	Poor
Radiation	Excellent	Very Good	Very Good	Very Good	Good	Very Good	Outstanding	Very Gd	Fair To Gd	Very Good	Excellent
Rebound-Cold	Excellent	Good	Very Good	Good	Poor	Fair To Gd	Very Good	Fair To Gd	-	Excellent	Good
Rebound-Hot	Excellent	Good	Very Good	Good	Very Good	Good	Very Good	Good	-	Excellent	Good
Set, Compression	Good	Fair	Fair To Gd	Good	Fair	Fair	Good	Fair To Gd	-	Fair	Good
Solvents, Lacquer	Poor	Poor	Poor	Fair	Fair To Gd	Poor	Poor To Fr	Poor To Fair	Excellent	Poor	Poor
Steam	Fair To Gd	Poor	Fair	Fair To Gd	Good	Fair	Excellent	Fair To Gd	-	Fair	Fair To Good
Sunlight Aging	Poor	Good	Very Good	Poor	Very Good	Outstanding	Outstanding	Outstanding	Excellent	Excellent	Poor
Swelling In Oil	Poor	Gd To Excl	Good	Very Good	Poor	Gd To Excl	Poor	Excellent	-	Fair	Poor
Tear	Gd To VG	Excellent	Good	Fair	Good	Fair	Fair To Gd	Fair	-	Poor	Fair
Tensile Strength	Excellent	Excellent	Good	Gd To Excl	Good	Fair	Gd To Excl	Gd To Excl	-	Poor	Gd To Excl
Water	Fair To Gd	Poor	Fair	Fair To Gd	Good	Fair	Excellent	Fair To Gd	Excellent	Fair	Fair To Good
Weather	Fair	Excellent	Excellent	Fair	Gd To Excl	Excellent	Excellent	Excellent	Excellent	Excellent	Fair
Generally Resistant To:	Water, Air And Average Concentration Acids, Bases Alcohols, Salts, Ketones, Best Abrasion Resistance	Moderate Chemicals, Oils, Fats, Greases And Many Hydrocarbons.	Moderate Acids And Chemicals, Ozone, Oils, Fats, And Many Solvents, Oily Abrasive Applications.	Most Hydrocarbons, Fats, Oils, Greases, Hydraulic Fluids, Chemicals And Solvents.	Animal And Vegetable: Oils, Fats, Greases. Air, Gas, Water, Many Oxidizing Chemicals And Ozone.	Strong Acids And Bases. Freons, Hydroxides, Ozone, Alcohols. Etching, Alkaline And Hypochlorite Solutions.	Vegetable And Animal Fats, Oils. Ozone. Many Strong And Oxidizing Chemicals. Ketones, Alcohols.	All Aromatic, Aliphatic And Halogentated Hydrocarbons. Many Acids, Animal And. Vegetable Oils.	Most Known Fluid Chemicals.	Moderate Or Oxidizing Chemicals. Ozone. Concentrated Sodium Hydroxide.	Water, Air, Anti-Freeze, Detergents, Salt Solutions. Bases, Alcohols And Some Acids.
Generally Affected Or Attacked By:	Ozone, Strong Acids, Bases, Oils, Solvents, Most Hydrocarbons.	Concentrated Acids, Ketones, Esters, Chlorinated And Nitro Hydrocarbons.	Oxidizing Acids, Esters And Ketones, Aromatic Chlorinated And Nitro Hydrocarbons	Ozone, Ketones, Esters, Aldehyes, Nitro And Chlorinated Hydrocarbons. Polar Solvents. MEK.	Oils, Solvents. Aromatic Hydrocarbons	Ketones, Esters, Certain Chlorinated Oxidizing Acids. Chlorinated, Nitro And Aromatic Hydrocarbons.	Mineral Oils, Solvents, Aromatic Hydrocarbons.	Ketones, Esters, And Nitro Containing Compounds.	Molten Alkali Metals, Fluorine And Related Compounds.	Many Solvents, Oils, Concentrated Acids, Sulfurs.	Oils, Greases, Solvents And Hydrocarbons. Ozone And Strong Acids.