PEEK stock shapes are made exclusively with Victrex PEEK resin, thus ensuring the high quality and level of physical properties of PEEK stock shapes. PEEK is a unique, semi-crystalline, high temperature engineering thermoplastic that can be machined to meet the most demanding applications. PEEK is an excellent material for a wide spectrum of applications where thermal, chemical, and combustion properties are critical to performance. Especially significant in this regard is PEEK's ability to retain its flexural and tensile properties at very high temperatures in excess of 250°C (482°F). The addition of glass fiber or carbon fiber reinforcements enhances the mechanical and thermal properties of the basic PEEK material. Medical grades are also available.