Duratron™ U2300 PEI is a flame resistant polyetherimide that is 30% glass-reinforced, allowing this grade to exhibit the highest rigidity, strength, dimensional stability and heat resistance of all Duratron™ PEI shapes. Possessing the lowest coefficient of linear thermal expansion, superior strength-to-weight ratio and tensile strength, this grade is favored as a solution for reusable medical devices, analytical instruments, electrical insulators, semiconductor process components and structural components that require high strength and rigidity at elevated temperatures.