PEEK Parts We Machine
Ten PEEK and high performance polymer part families from medical components to semiconductor ESD tooling.
Ten Part Families We Run Repeatedly
| Part family | Common materials | Key tolerances | Typical finish | Typical order |
|---|---|---|---|---|
| Medical instrument components | PEEK natural, implant grade | +/-0.01 mm seats, ISO 13485 docs | Cleaned, sealed pack | 100 to 1,000 pcs |
| Semiconductor wafer handling parts | ESD225 / ESD420 | +/-0.02 mm, ESD surface resistivity certified | Double bagged | 50 to 500 pcs |
| Aerospace bracket replacements | PEEK + CF | +/-0.02 mm, FAI per AS9102 | As-machined | 20 to 200 pcs |
| High temperature insulators | PEEK natural | 260 C service, +/-0.02 mm | As-machined | 200 to 2,000 pcs |
| Pump internals for chemicals | PEEK virgin | +/-0.02 mm, leak tested | Cleaned | 200 to 2,000 pcs |
| Gear and wear components | PEEK + CF or PTFE filled | +/-0.01 mm tooth features | As-machined | 200 to 2,000 pcs |
| PEI (Ultem) wastewater parts | PEI rod direct from Germany | +/-0.02 mm, Ra 0.8 | As-machined | 50 to 300 pcs |
| PI (polyimide) thermal isolators | PI stock | +/-0.02 mm | As-machined | 50 to 500 pcs |
| Valve seats under load | PEEK + GF30 | Seat flatness 0.01 mm | Lapped | 200 to 2,000 pcs |
| Conductive handling trays | Conductive nylon, ESD PEEK | +/-0.05 mm pockets | ESD certified | 100 to 1,000 pcs |
Material detail and grade table: PEEK and engineering plastics. PEI case: aerospace wastewater case study.
Worked examples with full measurement data: case studies.
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Frequently Asked Questions
What tolerance can you hold on plastic parts?
On stable geometries we hold +/-0.005 mm on polymer parts, matching our metal capability; minus-material behavior like moisture uptake is planned into the process. Standard tolerance is +/-0.05 mm unless the drawing calls tighter.
Do plastic parts need annealing?
Stress relief (hot oil or air annealing) is planned per material and geometry; PTFE nearly always gets an anneal before finish passes, and PC benefits on stress-sensitive features.
Can you source certified plastic stock?
Yes, stocked rods and sheets come with mill certificates; medical-grade and ESD grades are sourced per drawing callout.
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