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ACM
ACM (Acrylic Rubber)
Heat- and oil-resistant elastomer commonly used for drivetrain, lubricant, and industrial oil exposure.
Answer-First Summary
- Temperature Range: -20 C to +175 C, compound-dependent
- Media Profile: Hot oils, lubricants, and selected transmission fluids
- Engineering Role: A practical hot-oil material between NBR/HNBR and FKM
Good Fit
Best fit when hot oil aging is the main risk and FKM performance would be excessive for the project economics.
Typical Application Windows
Hot oil seals
Transmission-adjacent molded parts
Lubricant-contact gaskets
Selection Comparison
| Feature | ACM | HNBR | FKM |
|---|---|---|---|
| Hot oil resistance | Strong | Strong | Excellent |
| Cold flexibility | Moderate | Strong | Moderate |
| Cost position | Medium | Medium | Higher |