What are the common plastics used in injection molding for medical products?

Polyetheretherketone (PEEK): An engineering plastic commonly used in medical applications because it resists gamma radiation and autoclaving, both of which are used for sterilization. PEEK has excellent mechanical properties, resists chemical and thermal degradation, and can withstand long-term liquid immersion. Polyetherimide (PEI): A heat-resistant thermoplastic that combines stiffness and stability with low flammability and smoke production. PEI’s environmental resistance and high impact strength make it ideal for applications such as medical parts and components. Thermoplastic Elastomer (TPE): Thermoplastic elastomer (TPE) or thermoplastic rubber (TPR) is a mixture of rubber and plastic materials. Injection-molded TPE is commonly used in medical devices including breathing tubes, valves, catheters and ventilation masks.