PEEK (polyetheretherketone) is a semicrystalline, high-temperature (up to 500° F) engineering thermoplastic that is excellent for applications where thermal, chemical, and combustion properties (UL flammability rating of V-0) are critical to performance. At the same time, PEEK emits little smoke or toxic gas when exposed to flame. This material is tough, strong, and rigid and has superior creep resistance. It also resists radiation and a wide range of solvents. With its resistance to hydrolysis, PEEK can withstand boiling water and superheated steam used with autoclave and sterilization equipment at temperatures higher than 482° F. PEEK resins are available in unreinforced, 30% glass-fiber reinforced, 30% carbon-fiber reinforced, and HPV-reinforced grades. Typical applications include the automotive, marine, nuclear, oil-well, electronics, medical and aerospace industries.