PEEK Polymer:

PEEK is a linear aromatic polymer which is semi-crystalline and is widely regarded as the highest
performance thermoplastic material. PEEK has repeating monomers of two ether and ketone
groups, as shown below:

Understanding the chemical structure gives a better understanding of why the fluoropolymers
have such outstanding chemical resistance (and other properties).
PEEK is naturally tan in color and can be pigmented with a wide range of colors, allowing for easy
part identification. What sets PEEK apart from fluoropolymers is the fact that PEEK retains its
mechanical properties at extremely high temperatures (continuous service temp of 482ºF).