Rubber Molding Design Guidelines Material Options
| SHORE A | ||
| ASTM | HARDNESS | |
| CODE | MATERIAL | RANGE |
| CR | NEOPRENE (CHLOROPRENE) | 25 - 90 |
| SBR | SBR | 30 - 90 |
| NR | NATURAL RUBBER | 30 - 90 |
| IIR | BUTYL | 40 - 80 |
| IR | ISOPRENE | 30 - 90 |
| NBR | NITRILE (BUNA-N) | 30 - 90 |
| EPDM | EPDM | 30 - 90 |
| CSM | HYPALON®· | 55 - 80 |
| FKM | VITON®· | 55 - 90 |
| FKM | AFLAS®·· | 60 - 90 |
| MQ | SILICONE | 30 - 90 |
| FVMQ | FLUORO SILICONE | 50 - 80 |
Please consult Seals Unlimited for material choices not listed. Unique properties that can be added to the rubber compound are extra antidegradents, biocides, and blooming lubricants to name a few. The physicals of the rubber can also be adjusted to meet your specialized needs. Use our fax at 503-690-6688 to send us your drawing, rubber specifications and rubber service requirements for a prompt quote. Please specify if tooling already exists and include overall tooling size, number of cavities, and mold type.
® · Hypalon and Viton are registered trademarks of Dupont Dow Elastomers
® · · Aflas is a registered trademark of the 3M Corporation