PTFE Convoluted Tubing

About PTFE Convoluted Tubing

PTFE convoluted tubing is produced using a modified grade of standard PTFE (PolyTetraFluoroEthylene) offering the advantage of excellent flex-life performance compared to most other fluoropolymers together with greatly improved stress crack resistance.

Containing fewer pinhole voids than standard material, PTFE convoluted tubing benefits from much lower permeation making it an excellent choice for the transport of fine chemicals and very ‘searching’ gases such as chlorine.

FDA

FDA Compliant

UL

UL94 V-O flammability rating

ADI Free

ADI Free

USP Class VI

USP Class VI Compliant

Key Features of Convoluted Tubing:

  • • Most flexible tubing design
  • • Self draining due to its helical form
  • • Broadest chemical resistance
  • • Serviceable up to 260°C (500°F)
  • • Non-wetting
  • • Very low diffusion through wall
  • • UL94 V-O flammability rating, LOI 95%
  • • Smooth surfaces
  • • Numerous connection options
  • • FDA & USP Class VI & ADI compliant

Availability of PTFE Convoluted Tubing:

  • • Available in coils or on spools
  • • Cut-to-length
  • • Standard & conductive (fully carbon black or single helical stripe)
  • Thermoformed ends: flanged, flared, cuffed
  • • Ready assembled with connectors
  • • Outer helical wire for improved pressure performance and crush resistance

Technical Downloads

PTFE Convoluted Tubing - Cross Section View

PTFE Convoluted Tubing - Cross Section View

PTFE Convoluted Tubing Sizing Guide

  • Standard Nominal Imperial Sizes
Nom Bore ID (mm) Wall (mm) OD (mm) Pitch (mm) MBR (mm) Max Coil Length
1/4
6.00 +/-0.25
0.65 +/-0.10
10.00 +/-0.10
5.0
10
150
5/16
8.00 +/-0.25
0.65 +/-0.10
12.00 +/-0.25
5.0
15
125
3/8
10.00 +/-0.35
0.65 +/-0.10
14.50 +/-0.35
5.0
20
120
1/2
13.00 +/-0.40
0.90 +/-0.10
18.00 +/-0.40
6.0
25
80
5/8
16.00 +/-0.40
0.90 +/-0.10
21.00 +/-0.40
6.0
30
55
3/4
20.00 +/-0.40
1.00 +/-0.10
28.00 +/-0.40
8.0
50
140
1
25.00 +/-0.50
1.10 +/-0.10
34.00 +/-0.50
8.0
60
100
1 1/4
32.00 +/-0.50
1.15 +/-0.10
42.00 +/-0.50
10.0
80
70
1 1/2
37.00 +/-0.50
1.45 +/-0.15
47.00 +/-0.50
10.0
100
100
1 3/4
45.00 +/-0.50
1.45 +/-0.15
57.00 +/-0.75
12.0
120
85
2
50.00 +/-1.00
1.50 +/-0.15
61.00 +/-1.00
12.5
125
80
2 1/4
57.00 +/-1.00
1.50 +/-0.15
73.00 +/-1.00
16.0
150
65
2 1/2
63.00 +/-1.50
1.50 +/-0.15
82.00 +/-1.00
18.0
175
55
3
74.00 +/-1.50
1.50 +/-0.15
92.00 +/-1.00
20.0
200
45
4
100.00 +/-2.00
2.00 +/-0.20
125.00 +/-2.00
24.0
225
25
5
125.00 +/-2.00
2.50 +/-0.25
152.00 +/-2.00
30.0
235
20
6
150.00 +/-2.50
2.50 +/-0.25
180.00 +/-2.50
30.0
250
15
MBR: minimum bend radius

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