CNC Turning
Round parts — bushings, bearing rings, valve seats, shafts and rotational components in PEEK and filled grades.
- Diameter range: Ø 3 – 200 mm
- Live tooling for off-axis features
- Bar feed for short-run repeat parts
CNC Machining
Precision CNC Machining of PEEK and High-Performance Polymers
From single-piece prototypes to validated short-run production. CNC turning, milling and 5-axis work in unfilled and filled PEEK — held to engineering-grade tolerance, with material guidance and DFM feedback included on every quote.
±0.01 mm
Tightest Tolerance
5-Axis
Complex Geometry
5–10 days
Typical Lead Time
1 → 5,000
Prototype to Short Run
Why CNC for PEEK
The Right Path When Tooling Doesn't Make Sense Yet
PEEK is one of the harder engineering polymers to machine — it work-hardens, it's sensitive to heat buildup, and stress relief matters for tight-tolerance parts. Done right, CNC delivers PEEK components that hold dimension under load and survive in chemical, high-temperature service environments.
We use CNC machining when the design is still evolving, when quantities don't justify tooling, or when the geometry is too complex for molding. Our process is built around PEEK specifically — coolant strategy, fixturing and tool selection are tuned to the material, not borrowed from metal work.
Machining Capabilities
Three Process Lines Under One Roof
Each process is run by operators trained on PEEK and other high-performance polymers — not metal-shop crossovers.
CNC Milling (3-Axis)
Plates, blocks, brackets and prismatic parts. Ideal for insulation blocks, jigs, fixtures and structural components.
- Work envelope: up to 600 × 400 × 300 mm
- Heat-managed tool paths for PEEK
- Stress-relief steps for tight tolerance
5-Axis Machining
Complex geometry, undercuts, contoured surfaces and one-setup parts that would otherwise need multiple fixtures.
- Reduced setup time, better dimensional accuracy
- Single-fixture cycle for complex parts
- Suited to semiconductor and medical-grade work
Specifications at a Glance
What We Hold to, Routinely
Standard tolerances we deliver without special quoting. Tighter values are possible — talk to us about your part.
| Specification | Standard Capability | Notes |
|---|---|---|
| Linear tolerance | ±0.05 mm | ±0.01 mm achievable on critical features |
| Hole / bore tolerance | H7 | H6 available with reaming |
| Surface finish (Ra) | 1.6 µm | 0.8 µm achievable on turned surfaces |
| Concentricity | 0.02 mm | Live-tool turning, single setup |
| Maximum part size | 600 × 400 × 300 mm | Larger sizes by arrangement |
| Quantity range | 1 – 5,000+ pcs | Above 5,000, consider injection molding |
| Lead time | 5 – 10 working days | Express on simple prototypes |
Materials We Machine
PEEK Grades and High-Performance Polymers
Material selection guidance is included on every quote — tell us the application and we'll recommend the right grade.
PEEK · Natural
Unfilled PEEK
General-purpose engineering parts. Good toughness, clean appearance, broadest chemical compatibility.
PEEK · GF30
Glass-Filled PEEK
Higher rigidity and creep resistance. Best for parts under sustained mechanical load.
PEEK · CF30
Carbon-Filled PEEK
Higher strength and stiffness, improved wear performance, partial conductivity.
PEEK · Tribological
Wear-Resistant PEEK
PTFE / graphite / carbon blends optimized for sliding and low friction.
PEEK · ESD
Conductive / ESD PEEK
Static-dissipative grades for semiconductor and electronics handling.
Other Polymers
PTFE · PI · PPS · PEI
Other high-performance polymers machined on the same equipment when PEEK isn't the best fit.
Typical Parts
What We Machine Most Often
Application-driven examples. Every job is to your drawing — these are the part families where our process is mature.
Turned
PEEK Bushings & Bearing Rings
Low-friction rotating parts for pumps and machinery.
Turned
PEEK Valve Seats
Chemical and temperature-resistant fluid valve seating.
Milled
PEEK Insulation Blocks
Custom dielectric blocks for high-temperature electrical assemblies.
Milled
PEEK Guide Components
Guides, stoppers, supports for semiconductor fixtures.
5-Axis
PEEK Wear Rings
Sealing support and wear rings for fluid-handling systems.
5-Axis
Precision Test Fixtures
One-off fixtures and jigs for electronics and semiconductor test.
Turned
PEEK Spacers & Washers
Insulating spacers and high-temperature washers in volume.
Milled
Custom Prototypes
One-piece engineering samples for design validation.
From Drawing to Part
Five-Step Machining Workflow
Drawing & DFM
You send STEP/PDF, we review tolerances and recommend grade.
Quote & Approval
Transparent quote with lead time. You approve before we cut chips.
CAM & Setup
Programming and fixturing tuned for PEEK — not metal defaults.
Machining & Inspection
Run, inspect, document. Stress-relief steps where required.
FAI & Ship
First-article report with the shipment. Material certificate on request.
Why HSealing for CNC PEEK
What Makes Our Machining Different
We don't run PEEK like it's another commodity polymer — and that shows up in the parts you receive.
PEEK-Specific Tooling Strategy
Tool geometry, feed rates and coolant managed for PEEK. We avoid the heat buildup and chip welding that ruins polymer tolerance.
Stress Relief Built In
For tight-tolerance and thin-wall parts, we run controlled annealing steps so dimensions hold after machining — not just at the gauge.
Real Lead Times, Honored
We quote 5–10 working days because that's what we ship in. We'd rather under-promise than miss a deadline you planned a project around.
Material Traceability
Every batch ties back to the resin certificate. If a quality question comes up six months later, we can answer it.
Machining FAQ
Questions Engineers Ask Before Sending Drawings
Can you machine filled PEEK grades?
Yes — glass-filled, carbon-filled and wear-modified PEEK are routine for us. Filled grades are more abrasive on tooling, which we account for in quoting.
What's the smallest part you can machine?
Down to a few millimeters in diameter. Very small precision parts are usually turned with live tooling for off-axis features in a single setup.
Do you provide inspection reports?
Yes. First-article inspection (FAI) reports come with every new part. Batch inspection records are retained for production runs and available on request.
Can you hold tighter than ±0.05 mm?
Yes — ±0.01 mm is achievable on critical features. Tell us which dimensions matter and we'll quote them with the right process plan.
How do I send drawings safely?
Email STEP/IGES/PDF directly, or request an NDA first — we sign yours or send our standard mutual NDA within one business day.
Can you scale to volume after prototypes?
Yes. Many projects start with CNC samples, validate the design, then either continue as CNC short-run or move to injection molding once volume justifies tooling.
Ready to Quote
Send Your CNC PEEK Drawings — Reply Within 24 Hours
Material recommendation, DFM feedback and a transparent quote — included on every project.