KetaSpire KT-850 polyetheretherketone KetaSpire KT-850 is the intermediate-flow grade of unreinforced polyetheretherketone (PEEK) supplied in a natural-color pellet form. KetaSpire PEEK is produced to the highest industry standards and is characterized by a distinct combination of properties, which include excellent wear resistance, best-in-class fatigue resistance, ease of melt processing, high purity and excellent chemical resistance to organics, acids and bases. These properties make it well-suited for applications in healthcare, transportation, electronics, chemical processing and other industrial uses. Solvays KetaSpire PEEK product line includes: Neat grades (lubricated and non-lubricated) Glass fiber and carbon fiber reinforced grades (low and high melt flow) Wear resistant SL grades (lubricated and non-lubricated) Natural-colored powders (coarse, fine, super-fine and ultra-fine)