Elastomer Comparison Chart
Excellent Excellent
Vgood Very Good
Good Good
Fair Fair
Poor Poor
| COMMON NAME | EPDM OR EP RUBBER | NEOPRENE | NBR OR BUNA | NATURAL RUBBERS | BUTYL | SILICONE | FLOUROSILICONE | FLOUROCARBON |
|---|---|---|---|---|---|---|---|---|
| CHEMICAL NAME | Ethylene propylene | Chloroprene | Acrylonitrile Butadiene | Natural Isoprene | Isobutylene Isoprene | Silicone | Flourosilicone | Flourocarbon |
| SAE-200 | BA,CA,DA | BC,BE | BF,BG,BK | AA | AA | FC,FE,GE | __ | HK |
| ASTM DESIGNATION | EP | CR | NBR | NR | IIR | VMQ | FVMQ | FKM |
| (D 1418) | ||||||||
| PHYSICAL PROPERTIES | ||||||||
| Tensile Strengh (psi) | >2000 | >2000 | >2000 | >2000 | >2000 | >1200 | >1200 | >1400 |
| Hardnes Range | 40-80 | 20-80 | 40-80 | 50-70 | 40-75 | 40-80 | 40-70 | 70-90 |
| Tear Resistence | Good | Good | Fair | Good | Good | Fair | Poor | Fair |
| Abrasion Resistance | Good | VGood | Good | Excellent | Good | Poor | Fair | Good |
| Compresion Set | Good | Good | Good | Excellent | Fair | VGood | Excellent | Excellent |
| Resilience Cold | Good | Good | Good | Good | Poor | Excellent | Good | Fair |
| Resilience hot | VGood | VGood | Good | Fair | VGood | Excellent | Excellent | Excellent |
| Radiation Resistance | Excellent | Good | Poor | Fair | Good | Good | Excellent | Excellent |
| Impermiability To Gases | Good | Good | Good | Fair | Excellent | Fair | Excellent | Poor |
| Elongation | Good | Good | Good | VGood | VGood | Fair | ||
| ACID RESISTANCE | ||||||||
| Mild Dilute | VGood | VGood | Poor | Poor | Excellent | Excellent | Excellent | Excellent |
| Strong Concentrate | Good | Good | Poor | Poor | Good | Fair | Good | Excellent |
| SOLVENT RESISTSNCE | ||||||||
| Aliphatic Hydrocarbons | Poor | Fair | VGood | Poor | Poor | Poor | VGood | Excellent |
| Aromatic Hydrocarbons | Poor | Poor | Poor | Poor | Poor | Poor | Excellent | Excellent |
| Oxygenated (ketones,etc) | Good | Poor | Poor | Poor | Good | Poor | Fair | Fair |
| RESISTANCE TO | ||||||||
| Swelling in Lubricating Oil | Poor | Good | VGood | Poor | Poor | Poor | Excellent | Excellent |
| Oil and Gasoline | Poor | Good | Excellent | Poor | Poor | Fair | Good | Excellent |
| Animal oils | Fair | Fair | Excellent | Poor | Fair | Good | Excellent | Excellent |
| Water Absorption | VGood | Good | VGood | VGood | VGood | Excellent | Excellent | Excellent |
| Oxidation | Excellent | VGood | Good | Poor | Excellent | Excellent | Excellent | Good |
| Ozone | Excellent | VGood | Fair | Poor | Fair | Excellent | Excellent | Excellent |
| Sunlight Aging | Excellent | VGood | Poor | Poor | VGood | Excellent | Excellent | Good |
| Heat Aging | VGood | Good | Good | Fair | VGood | Excellent | Excellent | Excellent |
| Low Temperature (Degree C) | -50 | -40 | -30 | -50 | -40 | -59 | -59 | -15 |
| High Temperature ( Degree C) | 149 | 121 | 100 | 104 | 110 | 230 | 232 | 199 |
| Flame | Poor | Good | Poor | Poor | Poor | Fair | Excellent | Excellent |
| Vegetable Oils | Fair | Good | Good | Poor | Fair | Poor | Excellent | Excellent |
| Chlorinated Hydrocarbon | Poor | Poor | Fair | Poor | Poor | Poor | Fair | Good |
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