Elastomer Service Properties: EPDM
Service temperature limits, chemical resistance ratings, mechanical properties, and cure data for engineering elastomers and rubber compounds
| elastomer | grade or variant | acid resistance | astm designation | chemical resistance notes | common name | compression set pct (%) | compression set temp C | compression set time hr | cure system | density g cm3 (g/cm3) | elongation at break pct (%) | fuel resistance | gas permeability | glass transition temp C (C) | hardness range shore a | industry specifications | max continuous temp C (C) | max peak temp C (C) | max service temp C (C) | min service temp C (C) | notes | oil resistance | ozone resistance | steam resistance | tensile strength mpa (MPa) | tr10 temp C |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EPDM | general | Good | AA/CA (ASTM D2000) | Not for petroleum oils/fuels; excellent hot water, steam, brake fluid (DOT 3/4), phosphate ester hydraulic fluids, ketones, alcohols; excellent ozone and UV resistance | EPDM (General Purpose) | 25-35 | 100 | 22 | sulfur | 1.10-1.15 | 200-600 | Poor | Medium | -54 | 60-90 | ASTM D2000 M4AA, AMS 7280 | 120 | 135 | 150 | -55 | Terpolymer of ethylene, propylene, DCPD/ENB diene; sulfur cure max ~120C continuous | Poor | Excellent | Good | 7-20 | -48 |
| EPDM | peroxide_cure | Good | DA (ASTM D2000) | Peroxide cure provides lower compression set and better resistance to hot water, steam, alcohols, ketones vs sulfur cure; preferred for demanding steam service | EPDM (Peroxide Cure) | 10-20 | 150 | 22 | peroxide | 1.10-1.15 | 200-450 | Poor | Medium | -54 | 60-90 | ASTM D2000 M4DA, FDA 21 CFR 177.2600 (some grades) | 150 | 175 | 150 | -55 | Peroxide cure allows continuous use to 150C and steam to 288C (high durometer specialty compounds) | Poor | Excellent | Excellent | 7-17 | -46 |
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