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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).

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Heat Shrink Tubing
UL

UL 94 V-O flammability rating

FDA

Conforms with FDA Standards

USP Class VI

USP Class VI Certified

ADI Free

ADI Free

Dual Wall Heat Shrink 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.

Dual Wall Heat Shrink Availability:

  • • Standard 1.22m lengths, longer lengths upon request
  • • Standard colour natural
  • • Special sizes upon request
  • • FDA, USP Class VI & ADI compliant. Possible certificates on request.

Technical Downloads

Dual Wall Heat Shrink Tubing
Chemical Resistance Chart
Materials Guide
Regulatory Compliance Chart

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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Need some expert advice?

Get in touch with our experienced team to discuss your Fluoroplastic requirements. Simply click the button below to send us a message or call us on +44 (0)1785 859 054.

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