Duratron® PBI Polybenzimidazole is the highest performing engineering plastic available from Mitsubishi Chemical Advanced Materials due to its superior mechanical properties, heat resistance, and mechanical property retention above 400°F / 205°C. It has better wear resistance and load carrying capabilities at extreme temperatures than any other reinforced or unreinforced advanced engineering plastic, which is why this material is attractive to semiconductor manufacturers for vacuum chamber applications. In addition to this, Duratron® PBI is ideal for high heat bushings, connectors, valve seats, and probe tip lenses.