We machine PTFE plastic precision parts to ±0.005 mm with sharp tooling, controlled feeds and stress-relieved stock. Seals, insulators, fluidic manifolds and lab hardware, from one prototype to full runs.
PTFE punishes the wrong process. These are the four problems that show up most often in incoming inspection.
A dull cutter or a feed rate that is too slow rubs the material instead of shearing it. The edge tears, the surface turns waxy, and a sealing face that should read Ra 0.8–1.6 μm never gets there. You find it at leak test, not at the machine.
PTFE has a high coefficient of thermal expansion and low stiffness. Bore a hole to size on a warm afternoon and it can measure small the next morning. Without stress relief and a stabilized setup, a ±0.05 mm bore becomes a rework order.
Six-jaw or soft jaws are not optional on thin-wall PTFE. Clamp pressure that is fine for aluminium will ovalize a 1.5 mm wall sleeve. The part looks round on the bench and fails a roundness check on the CMM.
PTFE is often used for high-purity fluid and semiconductor paths. Chips from a previous steel job, or a machinist handling parts with bare hands, can leave a lot that cleans up visually but fails a wipe test. Once contamination is in the material, it does not come out.
Sharp geometry, conservative depth of cut, and a fixture that never crushes the part.
PTFE machines best with razor-sharp carbide, high positive rake, and generous relief. We run spindle speeds and feeds that shear the material cleanly instead of pushing it. That keeps the cut edge free of the smeared, waxy finish that shows up when a tool rubs.
Depth of cut stays light and the toolpath stays continuous. Air blast clears chips instead of coolant, because PTFE does not need lubrication and wet chips are harder to reclaim from a high-purity part.
Thin-wall PTFE sleeves and cups need soft jaws or a vacuum fixture. Clamp pressure is dialed down until the part measures round on the machine, not just off it. For long parts we rough, let the material relax, then finish to size.
Every run gets a first-article check and a final CMM pass. Reports are available on request. We hold ±0.005 mm on critical features and Ra 0.8–1.6 μm on sealing faces when the drawing calls for it.
Virgin PTFE is not always the first choice. Match the grade and the process to the job.
| Requirement | Best fit | Notes |
|---|---|---|
| Maximum chemical inertness | Virgin PTFE | Widest acid and solvent resistance |
| Better creep and wear | PTFE with 15–25% glass or carbon | Filler improves stiffness and load capacity |
| Tightest dimensional stability | PEEK or PPS | Lower CTE, better for precision bores |
| Sealing face, low friction | Virgin PTFE, fine finish | Target Ra 0.8–1.6 μm or finer |
| Thin-wall insulator | PTFE, soft-jaw turned | Watch wall thickness versus diameter |
| High-purity fluid path | Virgin PTFE, dry machined | No coolant, no cross contamination |
One shop for the turning, milling, finishing and inspection a plastic part needs.
Seals, bushings and sleeves turned to size with soft jaws and light finishing passes.
Manifolds, sensor bodies and plates with sharp cutters and air-blast chip clearing.
Complex fluidic and insulator geometry in one setup, fewer re-fixturing errors.
One-off PTFE and PEEK prototypes to check fit before you commit to a run.
Bead blasting, tumbling and polishing where the drawing specifies a finish.
First-article, in-process and final CMM checks, with reports on request.
Numbers below are shop capability, not a promise for every geometry.
| Parameter | Capability | Applies to |
|---|---|---|
| Tolerance | ±0.005 mm | Critical features, stable setups |
| Fine finish | Ra 0.2–0.8 μm | Sealing and sliding faces |
| Standard finish | Ra 1.6–3.2 μm | As-machined surfaces |
| Max part size | 4,000 mm | Long profiles and rails |
| Rotary table | Ø400 mm | Indexed and contoured features |
| Run size | 1 to 10,000+ | No minimum order quantity |
Numbers we can stand behind, and the practices behind them.
Fifteen years of precision work, including fluoropolymers and other low-stiffness plastics.
Sixteen simultaneous 5-axis centers, twelve four-axis mills, sixteen mill-turn centers.
On critical features when the setup and material allow it. We tell you when it does not.
100% inspection before shipment, with material, in-process and final checks.
Three wholly-owned plants in Dongguan, with a Singapore factory for regional support.
Quotation and free DFM analysis within 12 hours. Production can start in 24 hours.
Seals, insulators and fluid fittings that must survive fuel, coolant and heat cycling.
Low-friction seals and inert fluid contact parts where cleaning and traceability matter.
Insulators and high-purity flow components that cannot carry metal contamination.
Wear rings, bushings and chemical-resistant liners for pumps and process equipment.
On the right feature, yes. Short lengths, bores with enough wall support and a stable thermal environment will hold it. Long unsupported walls and large diameters will not.
We review the drawing and tell you which features we can hold to that number and which need a wider band. That conversation happens in the DFM reply, before cutting starts.
With sharp tooling and a light finishing pass we reach Ra 0.8–1.6 μm as a standard target, and down to Ra 0.2–0.8 μm when the drawing calls for it.
Finish and tolerance trade off. Asking for a mirror finish on a thin-wall part usually means slower feeds and more risk of deflection, so we balance both.
Yes. Glass-filled, carbon-filled and bronze-filled PTFE all machine differently from virgin stock. Fillers raise stiffness and wear resistance but also speed up tool wear.
Tell us the grade on the drawing or in the RFQ. It changes feeds, speeds and sometimes the toolpath.
No minimum. We run from a single prototype to production runs of 10,000 or more. One PTFE seal and a 10,000-piece order go through the same setup discipline.
Prototype work is a good way to confirm fit and finish before you commit to a full run.
We cut dry, with air blast instead of coolant, and keep PTFE jobs away from steel chip streams. Operators handle finished parts with gloves where the application calls for it.
If you need a specific cleaning or packaging routine, put it in the RFQ and we will build it into the process.
Quotation and free DFM analysis come back within 12 hours. Production can start within 24 hours of order confirmation, and most parts ship in 3–5 days.
Timing depends on material availability and part complexity. We give you a date in the quote and flag anything that could move it.
Uploads are secure and confidential. An NDA is available on request if your program needs one in place before you send files.
Send STEP, IGES, DWG or PDF drawings. We work from the model you supply and confirm any ambiguous callout before machining.
If the part carries load, sees continuous wear, or needs tighter dimensional stability over temperature, PEEK, PPS or a filled grade will usually serve you better.
PTFE wins on chemical inertness and low friction. If those are not the driving requirements, we will tell you so rather than sell you the harder-to-machine option.
Send a drawing and we will come back with a price, a DFM note and a ship date. One part or ten thousand.
12-hour quote100% inspectionNo minimum orderNDA available
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Upload your 3D model or 2D drawing and get a quotation with a free DFM analysis. Maximum processing size 4,000 mm.
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