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High Shrink Ratio Heat Shrink Tube (GMW 5x)

A high-ratio cross-linked polyolefin tube (GMW 5x) that covers large dimensional transitions between cables, connectors and back shells in a single size.

  • ASTM D638

Dimensional data

Technical Specifications

GMW series sizes
Product CodeD min.(mm.)d max.(mm.)T +/- 10 %(mm.)
GMW 5x 30/63064.3
GMW 5x 40/84084.3
GMW 5x 50/1050104.3
GMW 5x 60/1260124.5
GMW 5x 75/1575154.5
GMW 5x 90/1890184.5
GMW 5x 105/21105215.0
GMW 5x 115/23115235.0
GMW 5x 130/26130265.0
GMW 5x 140/28140285.0
GMW 5x 160/32160325.0

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PROPERTIESVALUESTANDARD
Physical
Tensile Strength12 N/mm² (Mpa)(min.)ASTM D638
Ultimate Elongation350 % (min)ASTM D638
Density1.0 ± 0.2 g/cm³ASTM D792
Longitudinal Change-10% (max.)ASTM D2671
Hardness45 ±10 Shore DASTM D2240
Water Absorption0.5 % (max.)ASTM D570
Thermal
Accelerated ageing(150 °C for 168 Hrs.)ASTM D2671
Tensile Strength10 N/mm² (Mpa)(min.)ASTM D638
Ultimate Elongation300% (min.)ASTM D638
Low Temperature Flexibility (-40 °C for 4 hrs.)No CrackingASTM D2671
Heat Shock (250 °C for 30 Min.)No Cracking or FlowingESI 09-11
Continuous Temperature Limit-40 to +110 °CIEC 216
Electrical
Dielectric Strength (2mm Wall)12 kV/mm. (min.)ASTM D149
Volume Resistivity1 × 10¹² Ohm.cm (min.)ASTM D257
Dielectric constant5 (max.)ASTM D150
Weathering : The material from which Medium and Heavy wall tubings are manufactured contains carbon black to protect it from UV light.

GMW 5x is a cross-linked polyolefin tube with a shrink ratio up to 5:1, for applications with a large dimensional difference between cables, connectors and components. It covers the large-size transitions between cables, cable connectors and back shells, simplifying repair of damaged cable and sealing the back end of connectors.

Covered on this page

  • High Shrink Ratio Heat Shrink Tube
  • Application :

Features & Benefits

  • High shrink ratio up to 5:1, simplifying repairs across a wide size range
  • Optional hot-melt adhesive lining for complete environmental protection and insulation to IP68
  • Resistance to weathering, UV rays, chemicals and solvents
  • Meets RoHS compliance and is halogen free

Applications

  • Large dimensional transitions between cables, connectors and components
  • Repairing damaged cable and sealing the back end of connectors

Standards & Compliance

  • ASTM D638

FAQs

Frequently Asked Questions

What is the High Shrink Ratio Heat Shrink Tube used for?

It is used for:

  • Large dimensional transitions between cables, connectors and components
  • Repairing damaged cable and sealing the back end of connectors
How is it installed?

Clean and degrease the surface, position the part, then shrink it with a gas torch or a hot-air gun: keep the heat moving round it with a smooth, brushing motion so it recovers evenly without scorching. Start at one end and work steadily along to the other.

Which standards and test methods are quoted for it?

These, with the values in the Technical Specification on this page:

  • ASTM D638
Where can I download the datasheet?

From the "Download datasheet" button at the top of this page, or here:

GALA-High-Shrink-Ratio-Heat-Shrink-Tube-2026.pdf

Can I get a quote, a sample or a size that is not listed?

Send your cable details, quantity and application with the "Request a Quote or Sample" form at the foot of this page. For a size or variant that is not in the chart, describe what you need there, or use Technical support at the top of the page, and the technical team will confirm what can be supplied.

  • 47+

    Years manufacturing

  • 100+

    Countries served

  • 140

    Products in range

  • ISO 9001:2015

    Certified & tested

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