polyetherketone

chemical compound

Also known as: PEK

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Last updated

July 1, 2026

Quick Summary

Polyetherketone (PEK) is a type of polyether, which are polymers formed by joining monomers through ether linkages (C-O-C). PEK and a related compound, polyetheretherketone (PEEK), are known for their high strength and resistance to radiation and chemicals.1

These engineering plastics are thermally stable and find applications in various components, including machine parts, automotive and aerospace parts, and equipment for nuclear power plants. Polyethers themselves are a diverse group of polymers with chainlike or networklike structures, used in products ranging from cosmetics to industrial materials.12

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major industrial polymers
Polyetherketone (PEK) and polyetheretherketone (PEEK)
PEK and PEEK are high-strength, radiation-resistant engineering plastics whose structures combine both ether and ketone groups. Both are thermally stable and highly resistant to chemicals. Principal uses are in machine parts, nuclear power-plant equipment, automobile parts, aerospace components, cable insulation,…
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PEK and PEEK are high-strength, radiation-resistant engineering plastics whose structures combine both ether and ketone groups. Both are thermally stable and highly resistant to chemicals. Principal uses are in machine parts, nuclear power-plant equipment, automobile parts, aerospace components, cable insulation,…
Read More