§ 01
General Rubber Guide
| ASTM Designation | Names | Durometer (Shore A) | Specific Gravity (Polymer) | Tensile Strength, Max-psi (Mpa) | Low Temperature Brittle Point -°F(°C) | High Temperature Peak Limit -°F(°C) |
Resilience | Compression Set | Heat Aging | Abrasion Resistance | Tear Strength | Flame Retardance | Weathering | Oxidation Resistance | Ozone Resistance | Oil Resistance | Acid Resistance | Alkali Resistance | Comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EPDM | Ethylene-PropyleneDiene Monomer | 40-90 | 0.86 | 2000 (13.8) | -70 (-58) | 350 (177) | G to E | G | E | G | P | P | E | E | E | P | E | E | Ozone resistanceGood extendibility |
| NBR | Nitrile (Buna-N)Acrylonitrile-butadiene | 40-90 | 1.00 | 2500 (17.3) | -60 (-51) | 275 (135) | G | G | G | G | F | P | F to P | G | F | E | G | G | Oil and fuel resistance |
| CR | NeopreneChloroprene | 40-90 | 1.24 | 2500 (17.3) | -65 (-54) | 275 (135) | G to E | F to G | G | G | G | G | G to E | G to E | G to E | G | G to E | G to E | Flame and weather resistance |
| NR | Natural RubberIsoprene | 30-90 | 0.92 | 3500 (24.1) | -70 (-58) | 221 (105) | E | G | F | E | E | P | P | G | P | P | F to G | F to G | Tensile strength and tear resistance |
| IR | Synthetic RubberPolyisoprene | 30-90 | 0.82 | 3000 (20.7) | -70 (-58) | 221 (105) | G | G | F to G | G to E | F | P | P | F | P | P | F to G | F to G | Synthetic natural rubber |
| SBR | Styrene-Butadiene | 40-80 | 0.92 | 2500 (17.3) | -70 (-58) | 239 (115) | G | G | F to G | G to E | F to G | P | P | F to G | P | P | F to G | F to G | Abrasion resistance |
| IIR | ButylIsobutene-isoprene | 40-80 | 0.92 | 2000 (13.8) | -70 (-58) | 250 (121) | P | F | G to E | G | G | P | G to E | E | G to E | P | E | E | Low gas permeability |
| BR | Polybutadiene | 40-80 | 0.93 | 2000 (13.8) | -100 (-73) | 220 (104) | E | G | F to G | E | G | P | F | F | P | P | F | F | Excellent resilience, when blended with other polymers. |
| Legend: P = Poor F = Fair G = Good E = Excellent | This information is provided as a general reference of basic polymer properties and is intended a a guideline only. Contact us with your specific needs. | ||||||||||||||||||
§ 02
Specialty Rubber Guide
| ASTM Designation | Names | Durometer (Shore A) | Specific Gravity (Polymer) | Tensile Strength, Max-psi (Mpa) | Low Temperature Brittle Point -°F(°C) | High Temperature Peak Limit -°F(°C) |
Resilience | Compression Set | Heat Aging | Abrasion Resistance | Tear Strength | Flame Retardance | Weathering | Oxidation Resistance | Ozone Resistance | Oil Resistance | Acid Resistance | Alkali Resistance | Comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MQ (specialty) | SiliconePolysiloxane | 40-80 | .95-1.6 | 1500 (10.3) | -90 to -180 (-68 to -118) | 600 (315) | F to E | F to G | E | P | P | F to G | E | E | E | E | G | E | Broad servicetemperature range |
| FKM | Fluoroelastomer | 55-90 | 1.85 | 2000 (13.8) | -40(-40) | 500 (260) | F to G | F to G | E | G | F | E | E | E | E | E | G to E | P to G | Heat andchemical resistance |
| AU (Ester)EU (Ether) | Urethane | 35-95 | 1.05-1.25 | 8000 (55.2) | -80 to -20(-62 to -29) | 220 (104) | G | F | G | E | E | P | E | G | E | G | P | P | Good tensile strength Note: polyesters and polyethershave different fluid resistance properties |
| AEM | Ethylene-acrylic | 40-90 | 1.08-1.12 | 3000 (20.7) | -75(-59) | 350 (177) | P | G | E | G | G | P | E | E | E | G | F | F to G | Heat resistance |
| ECO | Epichlorohydrin | 40-80 | 1.27-1.36 | 2000 (13.8) | -40(-40) | 275 (135) | G | P | G to E | F to G | F to G | F | E | G | E | E | P | F | Excellent fluid and hightemperature resistance |
| CSM | Chlorosulfonated Polyethylene | 40-90 | 1.18 | 3000 (20.7) | -70(-57) | 275 (135) | F | F to G | G to E | G to E | F | G | E | E | E | G | G to E | E | Excellent weather resistance |
| CPE | Chlorinated Polyethylene | 50-90 | 1.16-1.32 | 2000 (13.8) | -70(-57) | 300 (149) | F | G | G | G | F | G | G | E | E | G | G to E | E | Wire and Cable |
| HNBR | Hydrogenated Nitrile | 30-95 | .98-1.00 | 3500 (24.1) | -70(-57) | 325 (163) | G | G | G to E | G | F to G | P | G | G to E | E | E | G | G | Similar to NBR. Best in high flex, high tensile applications. |
| ACM | Polyacrylate | 40-95 | 1 | 2000 (13.8) | -40(-40) | 400 (204) | F to G | F to G | G | F to G | P to F | P | E | E | G to E | E | F | P | Good dynamic properties and flame resistance |
| Legend: P = Poor F = Fair G = Good E = Excellent | This information is provided as a general reference of basic polymer properties and is intended a a guideline only. Contact us with your specific needs. | ||||||||||||||||||