Noah Hukill

Unfilled, glass-filled, or aerospace-grade PEI (Ultem)? A practical guide to picking the right polyetherimide grade for sterilizable medical, aerospace-interior, and electrical parts — plus how to source it from sample to full container.

Glass-filled, glass-mineral, high-flow, or conductive PPS? A practical guide to picking the right polyphenylene sulfide grade for under-the-hood, electrical, and chemical-processing parts — plus how to source it from sample to full container.

PEEK (polyether ether ketone) is one of the highest-performing engineering thermoplastics available. It can withstand continuous-use temperatures above 250 °C, offers excellent chemical resistance, and has proven biocompatibility for medical applications. However, PEEK isn't a single material. The grade you choose can determine whether your part survives its service life or fails qualification. Here’s a practical guide to help you narrow down your options before committing to tooling...