Dual Wall Heat Shrink Tubing

About Dual Wall Heat Shrink Tubing

Dual Wall Heat Shrink Tubing is mainly used to encapsulate/protect components from moisture, air or aggressive media.

The Dual Wall Heat Shrink design consists of an outer PTFE tube which is then lined with a melt fusible FEP tube. FEPs melt temperature is much lower than PTFEs shrink temperature so as heat is applied the FEP softens and flows over the component; the PTFE tube then shrinks down onto the FEP. Following the cooling phase, the FEP sets and is firmly bonded to both the PTFE and the component thus creating a strong, moisture tight encapsulation. Maximum working temperature for encapsulated parts is approximately 210°C (410°F).

UL 94 V-0 Certified Material

UL 94 V-O flammability rating

FDA 21 CFR 177 1550

Conforms with FDA Standards

USP Class VI

USP Class VI Certified

ADI Free

ADI Free

Applications:

  • Dual Wall Heat Shrink Tubing applications include wire & cable harnesses, connectors, splices and any electrical termination where moisture or corrosive fluids can have a damaging effect.

Availability:

  • • Standard 1.22m lengths, longer lengths upon request
  • • Standard colour natural
  • • Special sizes upon request

Technical Downloads

Dual Wall Heat Shrink Tubing – Sizing Guide

  • Standard Metric Sizes
Expanded ID (mm) Shrunk ID (mm) Shrunk Wall (mm)
0.91
0.00
0.60
1.52
0.00
0.70
3.30
0.00
0.80
4.80
1.60
0.90
6.40
3.20
0.90
8.90
4.80
0.90
11.40
7.90
1.40
17.80
11.20
1.40
24.10
16.00
1.65
Fluoropolymer benefits

5 Reasons to use a Fluoropolymer for your application

At Polyflon we often help customers in their material selection for their next project components. During this selection process the value of Fluoropolymers is frequently discussed, and the unique benefits that they can bring to customer’s specific applications are explored. With customers ranging across multiple industries, including Pharmaceutical, Semi-Conductors, CPI and Food & Beverage, it […]

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