Polymers for Coefficient of Expansion and Compression

Q: Which polymer do we offer that would have the smallest compressibility and minimal thermal expansion? We have a very precise laser application. So if the screw changes its dimensions with increasing / decreasing temperatures or loads their device may not be as accurate as it should be. Can you suggest a material that can work?

A: PEEK glass-fiber reinforced would be the best in terms of the Coefficient of expansion and compressibility.

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