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PTFE CNC Machining Service

Custom precision CNC machined parts in PTFE, filled PTFE, UHMWPE, and PEEK. Tolerances to ±0.01mm. Send your drawing — we manufacture to spec.

✓ ±0.01mm Tolerances ✓ PDF, CAD, STEP Accepted ✓ Any Quantity ✓ Prototypes to Mass Production
Send Your Drawing

What We Machine

From prototype to mass production — precision CNC parts in PTFE and high-performance polymers.

PTFE CNC machining is the process of cutting precision components from PTFE (polytetrafluoroethylene) and related high-performance polymers using computer-numerically-controlled machine tools. The result is parts with tight dimensional tolerances, smooth surface finishes, and the exact geometry specified in your drawing.

We machine PTFE and filled PTFE grades, as well as UHMWPE, PEEK, and other engineering polymers. From a simple bush or bearing to a complex multi-axis valve component — if it's in a drawing, we can make it.

Accepting drawings in PDF, CAD (DXF, DWG), and STEP/STP formats. Tolerances up to ±0.01mm. No minimum order quantity — prototypes, small batches, and large production runs all welcome.

PTFE CNC machined pump component

Capabilities & Specifications

What we can produce — tolerances, materials, and formats.

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±0.01mm
Tightest Tolerance
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±0.05mm
Standard Tolerance
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PDF / CAD / STEP
Drawing Formats
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3 / 4 / 5 Axis
CNC Capability
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1 to 10,000+
Order Quantity
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No MOQ
Minimum Order
ParameterCapabilityNotes
Linear tolerances±0.01mm to ±0.1mmDepending on geometry and material
Surface finishRa 0.2–3.2 μmDepending on tooling and geometry
Drawing formatsPDF, CAD (DXF, DWG), STEP, STPSTEP preferred for complex geometry
Part size range1mm to 500mmCustom parts outside this range — contact us
Axis capability3-axis, 4-axis, 5-axisComplex geometry supported
Quality inspection100% dimensional checkInspection report available
Lead time (prototype)5–10 working daysFrom drawing approval
Lead time (production)10–20 working daysVolume orders

Materials We Machine

PTFE, filled PTFE grades, and other engineering polymers for demanding applications.

Virgin PTFE

Pure PTFE with maximum chemical purity. Best for food, pharmaceutical, and ultra-high-purity applications. Maximum chemical resistance across pH 0–14.

Temp: -200°C to +260°C | Friction: Extremely low | Chemical: Universal

Glass-Filled PTFE (25%)

PTFE filled with 25% glass fiber. Improved dimensional stability and compressive strength compared to virgin PTFE. Slightly reduced chemical resistance in strong alkalis.

Temp: -200°C to +260°C | Strength: Higher than virgin | Wear: Improved

Carbon-Filled PTFE

PTFE filled with carbon or graphite. Excellent thermal conductivity and wear resistance. Improved creep resistance under load. Good for dry-running and abrasive media.

Temp: -200°C to +260°C | Conductivity: High | Wear: Excellent

Graphite-Filled PTFE

PTFE with graphite filler. Excellent self-lubricating properties. Good thermal conductivity. Ideal for bearings, bushings, and sliding applications where oil or grease is not available.

Temp: -200°C to +260°C | Lubricity: Excellent | Self-lubricating

MOS₂-Filled PTFE

PTFE with molybdenum disulfide (MOS₂) additive. Improved wear resistance and lower coefficient of friction compared to virgin PTFE. Good for dynamic sealing and bearing applications.

Temp: -200°C to +260°C | Friction: Lower than virgin | Wear: Good

UHMWPE

Ultra-high molecular weight polyethylene. Excellent impact resistance and abrasion resistance. FDA-compliant. Lower temperature limit than PTFE (-200°C to +80°C) but superior for wear and impact.

Temp: -200°C to +80°C | Impact: Excellent | Wear: Superior

PEEK

Polyether ether ketone. High-performance engineering polymer with excellent mechanical strength, chemical resistance, and temperature capability (+250°C continuous). FDA grades available.

Temp: -40°C to +250°C | Strength: High | Chemical: Broad

FEP / PFA

Fluoropolymers similar to PTFE but with slightly different properties. FEP has lower temperature limit (+200°C) but is transparent and melt-processable. PFA offers higher temperature capability (+260°C) with similar properties to PTFE.

Temp: -200°C to +200°C (FEP) | Transparency: Available | Moldable

Parts We Manufacture

Typical PTFE machined components by industry and application.

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Valve Components

Diaphragms, valve seats, stem seals, and body inserts for process valves. PTFE's chemical inertness makes it ideal for aggressive media and hygienic service.

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Pump Parts

Wear rings, thrust washers, bearings, impellers, and pump casings. Carbon-filled and glass-filled PTFE for abrasion-resistant pump components handling slurries and particulate.

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Seals & Bearings

Radial shaft seals, piston rings, backup rings, guide rings, and plain bearings. Self-lubricating PTFE reduces maintenance and eliminates oiling in clean-room and food environments.

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Electronic Components

Insulators, standoff insulators, circuit board supports, and high-frequency components. PTFE's low dielectric constant makes it ideal for RF and microwave applications.

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Semiconductor Parts

Wafer handling components, process chamber insulators, and precision parts for semiconductor manufacturing equipment. Ultra-high purity virgin PTFE grades.

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Food & Pharma Parts

FDA-compliant components for food processing, packaging, and pharmaceutical manufacturing equipment. Non-toxic, tasteless, and easy to clean.

Our Machining Process

From your drawing to a precision-machined part — four steps.

1

Drawing Review

Our engineers review your drawing for manufacturability. We confirm dimensions, tolerances, material grade, quantity, and surface finish requirements.

2

Quote & Confirm

We send a detailed quote within 24 hours: unit price, lead time, and payment terms. No tooling cost. No hidden fees.

3

CNC Machining

Parts are machined on multi-axis CNC equipment from your drawing. Virgin PTFE requires careful machining to prevent material deformation — we have the expertise.

4

Inspection & Ship

Every part is dimensionally inspected before packing. Inspection reports available. Parts are carefully packed and shipped globally with full traceability documentation.

Industries We Serve

PTFE machined parts for chemical, pharmaceutical, food, semiconductor, oil & gas, and general industrial applications.

🧪 Chemical Processing

Valves, pump components, and seals for aggressive acid, alkali, and solvent service. Virgin PTFE's universal chemical resistance handles applications where metals corrode and elastomers fail.

💊 Pharmaceutical

FDA 21 CFR 177.1550 compliant machined parts for API synthesis, sterile processing, and biotech equipment. Clean, non-reactive, and non-toxic sealing components.

🍽️ Food & Beverage

FDA-compliant components for food processing lines, bottling equipment, and dairy systems. PTFE's non-stick surface prevents product adhesion and simplifies cleaning.

🔬 Semiconductor

Ultra-high purity machined PTFE for wafer handling, process chambers, and precision semiconductor manufacturing equipment. Clean-room compatible components.

⛽ Oil & Gas

Downhole and surface equipment components for petroleum fluids, natural gas, and LNG. Wide temperature range and chemical resistance for upstream and downstream applications.

⚡ Electronics & Electrical

Insulators, standoff components, and high-frequency parts for electrical equipment. PTFE's low dielectric constant and high dielectric strength make it ideal for RF and high-voltage applications.

Frequently Asked Questions

Common questions about our PTFE CNC machining service.

Q: What drawing formats do you accept?
We accept PDF (preferred for 2D drawings), CAD formats (DXF, DWG), and 3D models (STEP, STP, IGES). STEP files are preferred for complex 3D geometry as they preserve surface data better than other formats. If you only have a sketch or photo, contact us — we may be able to work with that.
Q: What tolerances can you achieve on PTFE parts?
Standard tolerances are ±0.05mm on linear dimensions. Tight tolerances of ±0.01mm are achievable on simpler geometries — contact us to confirm feasibility for your specific part. Note: PTFE has a relatively high coefficient of thermal expansion, so tolerance hold-out requires controlled machining temperature or material-specific considerations.
Q: Do you offer surface finishing services?
Yes. Standard as-machined surface finish is Ra 1.6–3.2 μm. We also offer polishing, sandblasting, and surface treatment to achieve smoother finishes (Ra 0.2–0.8 μm) for bearing and sealing surfaces. Contact us to discuss your surface finish requirements.
Q: What is the lead time for a prototype?
Typical prototype lead time is 5–10 working days from drawing approval. This covers material procurement (if not in stock), CNC programming, machining, inspection, and packing. For complex multi-axis parts or large quantities, lead time is longer — we will confirm the exact schedule in the quote.
Q: Do you machine other polymers besides PTFE?
Yes. We machine UHMWPE, PEEK, Nylon (PA6/PA66), Delrin (Acetal/POM), and other engineering plastics. The most common is PTFE and its filled grades, but we have experience across the full range of thermoplastics and fluoropolymers.
Q: Can you provide material certifications and test reports?
Yes. Material certifications (mill test certificates) are available for all base materials, showing resin grade, lot number, and key properties. For food, pharmaceutical, or semiconductor applications, we can provide full traceability documentation including FDA or USP compliance statements.
Q: What are the key considerations when machining PTFE?
PTFE is relatively soft and has a tendency to flow (creep) under machining pressure. Sharp tools, low cutting speeds, and careful chip evacuation are essential to avoid material deformation and surface defects. Virgin PTFE also tends to gall and stick to cutting tools — correct tooling geometry and feeds are critical. We have developed machining parameters optimized for each PTFE grade we work with.
Q: Do you offer assembly or sub-assembly services?
Our core capability is CNC machining. For simple assembly (press-fitting, adhesive bonding of PTFE to metal housings), contact us to discuss. For complex multi-component assemblies, we may be able to coordinate with partner workshops — describe your requirement in the RFQ.

Related Articles

Technical guides for engineers and procurement teams.

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PTFE CNC Machining Guide

Tooling, cutting parameters, and best practices for machining PTFE and filled PTFE on CNC equipment.
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Virgin PTFE vs Filled PTFE

How filler additives affect PTFE properties — strength, wear resistance, thermal conductivity, and chemical resistance.
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PTFE in Food & Pharmaceutical

FDA compliance, USP Class VI testing, and regulatory requirements for PTFE components in food and pharma manufacturing.

Have a Drawing to Quote?

Send us your PDF, CAD, or STEP file. We respond with a quote within 24 hours. No tooling cost. No minimum order.

Send Your Drawing