Precision CNC Machined PEI (Polyetherimide) Plastic Components

Engineered Excellence for Demanding Applications

Our CNC machining service specializes in producing high-precision components from PEI (Polyetherimide), an exceptional high-performance thermoplastic. Renowned for its outstanding combination of properties, PEI is the material of choice where extreme environments, dimensional stability, and reliability are non-negotiable.

Superior Material Properties

• Exceptional Thermal Stability: Withstands continuous service temperatures up to 170°C (338°F) and short-term peaks significantly higher, far exceeding standard engineering plastics.
• High Strength & Stiffness: Maintains excellent mechanical properties, including tensile strength and modulus, even at elevated temperatures.
• Inherent Flame Resistance: Naturally meets UL 94 V-0 flammability rating without requiring additives, ensuring safety in critical applications.
• Outstanding Dimensional Stability: Minimal creep and low moisture absorption guarantee consistent performance and tight tolerances over time and varying conditions.
• Excellent Chemical Resistance: Resists a wide range of chemicals, solvents, and automotive fluids.
• Low Outgassing & High Purity: Ideal for vacuum, aerospace, and semiconductor applications where contamination is unacceptable.
• Good Electrical Properties: Maintains stable dielectric properties across a wide temperature and frequency range.

Our CNC Machining Expertise

• Precision Tolerances: We achieve tight dimensional tolerances (down to ±0.01mm / ±0.0004″) critical for complex assemblies.
• Complex Geometries: Advanced CNC milling and turning capabilities allow us to machine intricate shapes, fine details, thin walls, and deep cavities.
• Superior Surface Finish: Delivers smooth finishes and pristine edges, minimizing the need for secondary operations. (Ra values achievable based on requirements).
• Material Integrity: Our processes are optimized for PEI to prevent stress cracking, melting, or degradation during machining.
• Prototype to Production: Scalable solutions from single prototypes to high-volume production runs.
• Quality Assurance: Rigorous inspection protocols (including CMM, optical comparators, calipers, micrometers) ensure every part meets exact specifications. ISO 9001 compliant processes.

Key Applications

• Aerospace & Aviation: Interior components, ducting, connectors, brackets (meets FAA standards like FAR 25.853).
• Medical & Life Sciences: Surgical instrument components, sterilization trays, imaging device parts, drug delivery systems (biocompatibility options available).
• Semiconductor Manufacturing: Wafer handling components, test sockets, vacuum chambers parts, insulators.
• Automotive (Under-the-Hood & Electrical): Sensor housings, connectors, transmission components, thermal insulation.
• Industrial Equipment: High-temperature fixtures, bearings, insulators, fluid handling components.
• Electrical & Electronics: Connectors, coil bobbins, circuit board insulators, RF components.

Why Choose Our PEI Machining Services?

• Deep Material Knowledge: Expertise in the unique machining characteristics of PEI.
• State-of-the-Art CNC Technology: Modern multi-axis machining centers.
• Commitment to Quality & Precision: Delivering parts that function flawlessly in the most challenging environments.
• Efficient & Reliable: On-time delivery and responsive communication.

Transform your high-performance design concepts into reality with precision-machined PEI components. Contact us today to discuss your project requirements and experience the difference in advanced thermoplastic machining.