PTFE Machining Service
We Provide PTFE Machining Services Specific to Your Needs!
- Rapid prototyping and low-volume production
- Tight-tolerance machining down to ±0.05mm
- Post-processing: tapping, threading, polishing
- Custom surface finishes and inserts
- Fast turnaround and responsive engineering support
What is Machined PTFE?
PTFE is often known by its trade name Teflon™. Machined PTFE (polytetrafluoroethylene) is known for its excellent chemical resistance, high-temperature tolerance, and incredibly low friction, making it useful in demanding environments. PTFE can be tricky to machine due to its softness and tendency to deform, so it requires the right tools, machining speeds, and techniques.
Machined ABS Grades We Work With
PTFE comes in a few different grades, and each one serves a different job depending on the performance needed. We’ve worked with a wide range of CNC PTFE types, and we choose the right one based on the specific demands of your part. Here are the PTFE grades we commonly machine:
- Standard PTFE: The standard, unfilled version. Excellent for general chemical applications, electrical insulation, and food-grade components. We often machine it for seals, gaskets, and lab parts.
- Glass-Filled PTFE: Reinforced with glass fibers to improve wear resistance and reduce creep. We use it for parts under mechanical load or in sliding applications, like bushings and valve seats.
- Carbon-Filled PTFE: Offers better compressive strength and thermal conductivity. Ideal for dynamic parts like piston rings or bearing surfaces that need durability under pressure.
- Bronze-Filled PTFE: Adds better dimensional stability and wear performance. We turn to this grade for parts that need strength but still want some of that low-friction behavior PTFE is known for.
- PTFE with MoS₂ (Molybdenum Disulfide): Gives better wear life and load capacity. Useful for sliding parts in dry or lubricated conditions.
Types of PTFE Machining We Offer
Machined PTFE Properties
Below are the key properties we pay attention to when working with PTFE by CNC machining, the data shall change based on PTFE grade and adding filler.| Item | Value |
|---|---|
| Density | ~2.2 g/cm³ |
| Melting Point | ~327°C (621°F) |
| Continuous Use Temperature | -200°C to +260°C |
| Tensile Strength | ~21–35 MPa |
| Elongation at Break | ~200–400% |
| Hardness (Shore D) | ~50–60 |
| Coefficient of Friction | ~0.04 (very low) |
| Water Absorption | <0.01% |
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Key Benefits of Teflon PTFE Machining
- PTFE has exceptional chemical resistance; it is nearly immune to chemical attack. PTFE CNC parts are able to withstand exposure to aggressive solvents, acids, or bases.
- PTFE retains its properties from cryogenic temperatures to 260°C. The wide temperature stability makes it resistant to degradation under thermal stress.
- PTFE has low low-friction and anti-stick surface; the natural lubricity makes PTFE parts move smoothly and resist sticking.
- With very high dielectric strength and low dissipation, PTFE's excellent electrical insulation makes it an ideal material for insulating components in high-voltage or RF applications.
- PTFE has no moisture absorption and remains dimensionally stable in humid or wet environments, even after long-term exposure.
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Limitations of Teflon PTFE Machining
- PTFE is soft and flexible in nature, so the low hardness can make it tricky to hold tight tolerances, especially for thin or small parts.
- PTFE has a tendency to deform under load because it has a relatively low mechanical strength; the parts may creep or deform under sustained pressure or load.
- PTFE has poor bonding and finishing because it is non-sticky by nature, which makes it hard to bond with adhesives or accept paints or coatings.
- Compared to many standard plastics, PTFE has a higher material cost, especially in large blocks or rods for machining.
Common PTFE Machined Parts
Here are some popular Teflon PTFE machined parts we have made:- Sealing Rings
- Gaskets
- Insulating Bushings
- Valve Seats
- Washer Spacers
- Chemical-Resistant Liners
- Guide Rails
Additonal Options for PTFE Parts
PTFE
POLYTETRAFLUOROETHYLENE
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