Glass Filled PTFE Tube is a reinforced PTFE tubing grade containing glass fibers to enhance mechanical strength, hardness, wear resistance and dimensional stability compared to virgin PTFE. It is widely used in chemical processing, industrial piping and CNC-machined components operating under load, friction and elevated temperatures.
What is Glass Filled PTFE Tube?
Glass Filled PTFE Tube is a reinforced PTFE (Teflon) tubing grade engineered with
glass fiber filler to improve mechanical strength, wear resistance,
and dimensional stability compared with Virgin PTFE tube.
This composite PTFE tubing is widely selected for chemical processing, industrial
gas/vapor lines, and machinable tube stock where standard PTFE may deform under load.
Material Composition & Engineering Purpose
By incorporating glass fibers (commonly 5%–25%, depending on grade),
PTFE glass fiber tube delivers higher stiffness and better resistance to long-term deformation
(creep) while maintaining PTFE’s low friction characteristics. This makes it a reliable choice for
applications combining pressure, continuous sliding, and thermal cycling.
Key Performance Benefits
- Higher mechanical strength: stiffer tubing for load-bearing and process equipment.
- Improved wear resistance: suitable for abrasive contact and sliding interfaces.
- Better dimensional stability: reduced deformation under pressure and temperature.
- Good chemical resistance: compatible with many corrosive fluids and process media.
- Service temperature range: typically around -200°C to +250°C (grade dependent).
- Machinable tube stock: practical for CNC turning into bushings, liners, rings, and seals.
Chemical & Thermal Resistance
Glass reinforced PTFE tube retains strong chemical stability for many industrial chemicals,
acids, and alkalis. For environments requiring the highest purity and maximum chemical inertness,
consider Virgin PTFE tubing. For heavy-duty wear/pressure combinations, you may also
compare with Carbon Filled PTFE tube or
Bronze Filled PTFE tube.
Typical Industrial Applications
- Chemical processing lines: transfer of compatible corrosive fluids.
- Hot vapor & industrial gases: stable performance in elevated temperatures.
- Process equipment: sleeves, spacers, and protective liners.
- CNC-machined components: tube stock for bushings, bearing sleeves, rings, and wear parts.
- Oil & gas / utilities: selected systems requiring improved creep and stability.
Glass Filled PTFE Tube vs Virgin PTFE Tube
- Glass Filled PTFE: higher stiffness, better wear resistance, improved creep resistance.
- Virgin PTFE: best for maximum chemical inertness, purity, and non-reactive service.
Machining & Fabrication Notes
This grade is commonly used as machinable PTFE tube stock for precision components.
If you also need sheet or rod forms for machining, see:
Glass Filled PTFE Sheet and
Glass Filled PTFE Rod.
Typical Technical Data (Guide Values)
| Property | Typical Range |
|---|---|
| Glass filler content | 5% – 25% (grade dependent) |
| Service temperature | -200°C to +250°C |
| Hardness (Shore D) | ~60 – 75 |
| Wear resistance | High |
| Dimensional stability | Improved vs Virgin PTFE |
| Coefficient of friction | ~0.08 – 0.13 |
FAQ
Is Glass Filled PTFE Tube suitable for corrosive chemicals?
It offers strong chemical resistance for many industrial media. For maximum chemical inertness and purity,
Virgin PTFE tube is typically preferred.
What is the main advantage over Virgin PTFE tube?
Glass fiber reinforcement improves stiffness, wear resistance, and
creep resistance, making it better for load and continuous operation.
Can this tube be CNC machined into components?
Yes. It is commonly used as machinable tube stock for bushings, liners, rings, and wear parts.
Need the right Glass Filled PTFE Tube grade for pressure, temperature, and media compatibility?
Contact our technical team for selection support and custom sizes.