PEEK
High-performance thermoplastic, very high strength, thermal and chemical resistant.
- Common grades
- Unfilled PEEK · Glass-filled PEEK (GF30) · Carbon-filled / bearing-grade PEEK · Medical-grade PEEK
- Machinability
- PEEK sits at the top of the engineering-plastics pyramid: continuous service at 250 °C, outstanding chemical and wear resistance, inherent flame performance, and strength that replaces metal in the right designs.
- Tolerances
- Agreed per grade at DFM: engineering plastics move with temperature and moisture, so critical fits are toleranced feature by feature
- Processes
- CNC milling, CNC turning and 5-axis machining
- Finishes
- Annealing · Machined finish · Cleanroom cleaning & packing
- Used in
- Semiconductor, Medical, Automotive, Oil & Gas
- Certification
- Manufacturer certificate of conformance and lot traceability with every shipment
Machining PEEK
PEEK sits at the top of the engineering-plastics pyramid: continuous service at 250 °C, outstanding chemical and wear resistance, inherent flame performance, and strength that replaces metal in the right designs. It is also one of the most expensive polymers per kilogram, so scrap discipline matters.
It machines well but punishes complacency: PEEK conducts heat poorly, and overheated cuts leave stressed surfaces. We use sharp tooling, controlled parameters, and anneal between roughing and finishing on tight-tolerance parts so dimensions stay put.
We hold ±0.05 mm on critical PEEK features, machine both unfilled and filled grades, and handle the cleanliness requirements semiconductor and medical PEEK parts routinely carry.
Common Grades We Machine
- Unfilled PEEK - The general-purpose grade: best toughness and elongation, food and medical variants available.
- Glass-filled PEEK (GF30) - Double the stiffness and better creep resistance for loaded structural parts.
- Carbon-filled / bearing-grade PEEK - Carbon, graphite and PTFE filled for the lowest wear and friction at load.
- Medical-grade PEEK - Certified grades with documentation for medical applications.
Applications by Industry
- Semiconductor - wafer-handling components, insulators and seals-adjacent parts in process equipment.
- Medical - sterilizable instrument components in certified grades.
- Automotive - bushings, brackets and insulators replacing metal at lower weight.
- Oil & Gas - back-up rings and downhole components that survive heat and chemistry.
Surface Finishing Options
- Annealing - sequenced stress relief that keeps tight tolerances stable; standard on precision PEEK.
- Machined finish - fine surfaces off the tool; polishing available where specified.
- Cleanroom cleaning & packing - washed, dried and double-bagged for semiconductor and medical delivery.
See our surface finishing services for the full range.
Frequently Asked Questions
When does PEEK justify its cost?
When the environment eliminates cheaper plastics: sustained heat above ~150 °C, aggressive chemicals, wear at load, or metal replacement for weight. If the part lives in benign conditions, POM or PC does the job for far less.
What tolerances can you hold on PEEK?
±0.05 mm on critical features, with annealing sequenced between roughing and finishing so parts stay dimensionally stable in service.
Unfilled or filled PEEK?
Unfilled for toughness and food/medical contact; glass-filled for stiffness under load; carbon/PTFE bearing grades for the lowest friction and wear. The application's failure mode picks the grade.
Can you deliver PEEK parts cleanroom-ready?
Yes. we clean, inspect and double-bag in our ISO Class 6–8 cleanrooms for semiconductor and medical programs.
Precision PEEK Manufacturing in Singapore
Need complex PEEK parts manufactured to tight tolerances? Explore our 5-axis simultaneous CNC machining, CNC milling, CNC turning and certified ISO Class 6–8 cleanroom assembly capabilities.
Speak with Our Sales & Engineering Team
Explore how Shine's Singapore precision CNC machining and cleanroom assembly integrate into your global supply chain. We welcome technical consultations, mutual NDAs, and facility audits.
- Mutual NDA executed within 24 hours
- ISO 9001:2015 certified & Cyber Essentials mark
- 24–48h engineering DFM feedback & formal RFQ pricing