Supplier's Category: All Engineering Plastics: PEEK, Ultem, Delrin, and specialized resins
Engineering plastics — PEEK, Ultem, Delrin, and other specialized resins — are polymers selected for mechanical, thermal, or chemical performance well beyond commodity plastics like ABS or polypropylene. They’re specified by resin grade, not just generic material family.
Engineering resins vary enormously by grade even within the same base polymer, so specify by exact grade, not just trade name.
- Confirm the specific grade’s temperature rating, chemical resistance, and mechanical properties match your application, not just the base resin family
- Check regulatory compliance (FDA, UL94 flammability) if your product requires it
- Verify processing compatibility with your chosen manufacturing method (injection molding vs. machining stock)
Related terms: PEEK, Ultem (PEI), Delrin (acetal/POM), PPS, PTFE, glass-filled and carbon-filled resin grades, UL94 flammability rating, FDA food-contact compliance, continuous use temperature rating
Where engineering plastics get specified
These resins get chosen specifically where commodity plastics fall short on one performance axis.
- High-temperature applications: PEEK and PPS for continuous use above 150°C
- Precision mechanical parts: Delrin and acetal for dimensional stability and low friction
- Chemical-resistant components: PTFE and specialty fluoropolymers