PTFE Tubing with Star Internal Profile 2.2×4 mm – 1 m

Specialized PTFE tube / tubing with a star-shaped interior is designed for applications where very stable and precise guiding of filament, liquids, or gases is required. The star-shaped (multi-groove) internal profile ensures better material guiding, lower friction, and the ability to slightly compensate for diameter deviations. It is made of pure PTFE (Teflon), which is characterized by top-tier chemical resistance and a working temperature range from approximately −60 to +260 °C. This makes it a great choice not only for 3D printing but also for laboratory, industrial, or pneumatic applications.

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Main Advantages and Use

• Internal Star-Shaped Profile (approx. 2.2 mm) The multi-groove shape supports stable material guiding, reduces the contact surface area, and thus reduces friction compared to a fully cylindrical interior.
• Outer Diameter 4 mm – Common Standard Compatible with most quick-connect fittings, bowden connectors, and holders for 4 mm PTFE tubes.
• PTFE Material (Teflon)
  • very low friction coefficient
  • excellent chemical resistance to most acids, bases, and solvents
  • long service life even in demanding environments
• Wide Working Temperature Range Suitable for applications in cold as well as long-term exposure to higher temperatures (typically up to approx. 260 °C at low pressure).
• Transparent White (Milky) Color Allows for partial visual inspection of the guided medium (filament, liquid, gas) and matches well with most printers and devices.
• Sold by 1 m – Always in One Piece One unit corresponds to 1 meter of tubing, supplied as a continuous strip without cutting.

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Typical Use

• 3D Printers (Bowden System)
  • precise filament guiding between the extruder and hotend
  • reduced friction and improved filament feed consistency
  • especially suitable for 1.75 mm filament (depending on specific filament tolerance and the star profile)
• Liquid and Gas Delivery
  • laboratory and measuring equipment
  • chemical applications with aggressive media
  • pneumatic systems with low to medium pressure (depending on specific pressure and conditions)
• General Industrial Use
  • transport of media where high chemical resistance is important
  • insulation or protective guiding for fine wires or fibers

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Technical Specifications

Parameter	Value
Material	PTFE (polytetrafluoroethylene)
Internal Profile	star-shaped / multi-groove
Nominal Internal Dimension	approx. 2.2 mm (star profile)
Outer Diameter	4 mm
Color	transparent white (milky)
Length	1 m (one continuous piece)
Temperature Resistance (Approximate)	approx. −60 °C to +260 °C
Chemical Resistance	very high against most chemicals
Typical Use	guiding filament, liquids, gases

The values listed are typical for PTFE tubing 2.2×4 mm and may vary slightly according to the specific production series.

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Recommendations for Installation and Use

• When shortening, use sharp cutting tools (knife, hose cutters) for a clean, perpendicular cut without burrs.
• Ensure the tube is not sharply kinked – maintain a reasonable minimum bend radius to avoid flow restriction or damage to the star profile.
• For 3D printers, regularly check the wear and cleanliness of the interior of the tube, especially when using abrasive filaments (with metal, carbon, or wood filler).
• For optimal function in a Bowden system, it is recommended to combine it with high-quality quick-connect fittings and a precise extruder.

This PTFE tubing with a star-shaped interior is the ideal choice if you are looking for stable and reliable filament or media guiding with minimum friction and maximum lifespan.

Key Features:

• Star-shaped internal opening (2.2 mm) for more stable guiding and lower friction
• Standard outer diameter 4 mm suitable for common quick-connect fittings and bowden systems
• High-quality PTFE (Teflon) with excellent chemical and temperature resistance
• Transparent white color allowing for partial monitoring of the flowing medium
• Ideal for precise guiding of 1.75 mm filament in 3D printers
• Supplied as 1 m of tubing in one continuous piece