Röchling processes the high performance plastic PEEK (Polyetheretherketone) under the brand name SUSTAPEEK as semi-finished product. PEEK (Polyetheretherketone) is a semi-crystalline, thermoplastic high-performance material, and is characterized mainly by its very good mechanical properties and exceptional dimensional stability, even at high continuous operating temperatures of up to 250°C. Due to their properties, PEEK plastics are suitable for a wide range of applications with demanding operating conditions such as medical devices. PEEK is naturally tan in color. We sell PEEK Rods in many different dimensions.