Comparative Properties of
Typical Elastomers
| ANSI/ASTM D1418-77 | NR/IR | AU/EU | CR | NBR | CIIR | CSM | EPDM | FKM | AFMU | SI | SBR |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Elastomer Common Name | Gum/Natural | Urethane | Neoprene | Nitrile/ Buna-N |
Chloro- butyl |
Hypalon® | EPDM/ EPT |
Viton®/ Fluorel® |
Teflon® | Silicone | GRS/ Buna-S |
| ASTM D-2000; SAE J-200 Military: MIL STD 417 | AA RN |
BG SB |
BC-BE SC |
BF-BG-BK-CH SB |
AA-BA RS |
CE SC |
BA-CA-DA RS |
HK - |
- - |
FC-FE-GE TA |
AA-BA RS |
| Chemical Name Definition | Polyisoprene | Polyester/ Polyether Urethane |
Poly- Chloroprene |
Butadiene Acrylo- Nitrile |
Chlora- Isobutylene Isoprene |
Chloro- Sulfonated Polyethylene |
Ethylene Propylene Polymer |
Fluorinated Hydrocarbon |
Tetrafluoro- Ethylene Resin |
Poly- Siloxane |
Styrene Butadiene |
| Hardness Range: Duro A Specific Gravity of Base Low Temp.- Min. Srvc °F High Temp. - Max. Srvc °F |
30-90 0.93 -20 to -60 185 |
60-99 1.06 -10 to -30 185 |
40-95 1.23 -10 to -50 220 |
40-95 1.00 +30 to -40 240 |
40-75 0.92 -10 to -60 250 to 300 |
40-95 1.12-1.28 -30 to -60 275 |
40-90 0.86 -20 to -60 300 |
55-95 1.85 +10 to -10 400 to 600 |
- - -120 450 |
40-85 1.14-2.05 -60 to -150 460 |
40-90 0.94 0 to -50 195 |
| Abrasion Absorption, Water Acid-Concentrated Acid-Dilute Adhesion To Fabrics |
Excellent Very Good Fair To Gd Fair to Gd Excellent |
Outstanding Good Poor Fair VG To Excl |
Excellent Good Good Excellent Excellent |
Good Good Good Good Good |
Good Very Good Good Excellent Good |
Excellent Very Good Very Good Excellent Good |
Good To Excl VG - Excel. Excellent Excl - Gd |
Good Very Good Excellent Excellent Gd To Excl |
Good - Excellent Excellent Fair to Good |
Poor Excellent Fair Excellent Excellent |
Gd To Excl Gd To VG Fair to Good Fair to Good Good |
| Adhesion To Metals Chemicals Colds Dielectric Strength Dynamic Properties |
Excellent Fair to Gd Excellent Excellent Excellent |
Excellent Fair Excellent Excellent Excellent |
Excellent Fair To Good Good Fair |
Excellent Fair To Gd Fair To Gd Poor Gd To Excl |
Good Excellent Good Excellent Fair |
Excellent Excellent Good VG To Excl Fair |
Gd To Excl Excellent Excellent Excellent Gd To Excl |
Fair To Gd Excellent Good Good Gd To Excl |
Fair To Gd Excellent Excellent - - |
Excellent Gd To Excl Outstanding Good Poor |
Excellent Fair To Good Very Good Excellent Good |
| Electrical Insulation Flame Heat Heat Aging Hydrocarbons-Aliphatic |
Gd To Excl Poor Good Fair Poor |
Fair To Gd Fair Good Good Gd To Excl |
Fair To Gd Good Very Good Good Fair To Gd |
Poor Poor Good Good Excellent |
Gd To Excl Poor Very Good Very Good Poor |
Good Good Excellent Very Good Fair To Gd |
Excellent Poor Excellent Excellent Poor |
Fair To Gd Excellent Outstanding Outstanding Excellent |
- Excellent Excellent Excellent Excellent |
Excellent Fair To Gd Outstanding Outstanding Poor |
Gd To Excl Poor Fair To Gd Fair To Good Poor |
| Hydrocarbons-Aromatic Hydrocarbons-Oxygenated Impermeability Oil-Animal & Vegetable Oil And Gasoline |
Poor Fair To Gd Fairly Low Poor - Gd Poor |
Fair To Gd Poor Fairly Low Gd To Excl Gd To Excl |
Fair Poor Low Good Good |
Good Poor Low Very Good Excellent |
Poor Good Very Low Very Good Poor |
Fair Poor To Fr Low To VL Good Good |
Poor Gd To VG Fairly Low Good Poor |
Excellent Poor Very Low Excellent Excellent |
Excellent Excellent - Excellent Excellent |
Poor Fair Fairly Low Gd To Excl Fair |
Poor Good Fairly Low Poor To Good Poor |
| Oxidation Ozone Radiation Rebound-Cold Rebound-Hot |
Good Poor - Fair Excellent Excellent Excellent |
Excellent Excellent Very Good Good Good |
VG To Excl VG To Excl Very Good Very Good Very Good |
Good Fair Very Good Good Good |
Excellent Excellent Good Poor Very Good |
Excellent Outstanding Very Good Fair To Gd Good |
Excellent Outstanding Outstanding Very Good Very Good |
Outstanding Outstanding Very Gd Fair To Gd Good |
Excellent Excellent Fair To Gd - - |
Excellent Excellent Very Good Excellent Excellent |
Fair Poor Excellent Good Good |
| Set, Compression Solvents, Lacquer Steam Sunlight Aging Swelling In Oil |
Good Poor Fair To Gd Poor Poor |
Fair Poor Poor Good Gd To Excl |
Fair To Gd Poor Fair Very Good Good |
Good Fair Fair To Gd Poor Very Good |
Fair Fair To Gd Good Very Good Poor |
Fair Poor Fair Outstanding Gd To Excl |
Good Poor To Fr Excellent Outstanding Poor |
Fair To Gd Poor To Fair Fair To Gd Outstanding Excellent |
- Excellent - Excellent - |
Fair Poor Fair Excellent Fair |
Good Poor Fair To Good Poor Poor |
| Tear Tensile Strength Water Weather |
Gd To VG Excellent Fair To Gd Fair |
Excellent Excellent Poor Excellent |
Good Good Fair Excellent |
Fair Gd To Excl Fair To Gd Fair |
Good Good Good Gd To Excl |
Fair Fair Fair Excellent |
Fair To Gd Gd To Excl Excellent Excellent |
Fair Gd To Excl Fair To Gd Excellent |
- - Excellent Excellent |
Poor Poor Fair Excellent |
Fair Gd To Excl Fair To Good 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. |
