Technical information

Diameter and Wall Thickness Tolerances for Paste-Extruded PTFE Tubes

Diameter and Wall Thickness Tolerances for Paste-Extruded PTFE Tubes, Type HN 1331 According to GKV Guideline

Inner Diameter (mm) Tolerance (mm)
3 to 5 +/- 0,2
above 5 to 7 +/- 0,25
above 7 to 10 +/- 0,3
above 10 to 15 +/- 0,35
above 15 to 20 +/- 0,4

 

Wall Thickness (mm) Tolerance (mm)
0,1 to 0,3 +/- 0,05
above 0,3 to 0,6 +/- 0,1
above 0,6 to 1,0 +/- 0,15
above 1,0 to 2,0 +/- 0,2
above 2,0 to 4,0 +/- 0,4
above 4,0 to 6,0 +/- 0,5
Colored Pigment

Available Pigmentation Colors

black green
brown blue
red orange
gray yellow
white
Pressure Resistance of Unfilled PTFE Tubes

Pressurization Period: 1min

Wall Thickness, 1 mm
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Wall Thickness, 0,5 mm
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orangeBursting pressure at 20°CblauService pressure at 20°CgelbService pressure at 100°C
In case of critical applications involving the PTFE tubes an additional pressure test up to 35 bar (depending on the particular dimensions) may be performed.
Minimum Bending Radii of Unfilled PTFE Tubes at 23°C

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orange Wall thickness 0,5 mm  blau Wall thickness 1,0 mm  gelb Wall thickness 1,5 mm