Heat Shrink Tube, Black 2.5mm Dia x 1200mm Long (Single Wall, 2:1 Shrink)

Available for Fast Dispatch.

Bulk discount rates

All Bulk Prices Below Are Quoted Including GST.

Buy 5 - 9 and pay only $0.78 each
Buy 10 - 24 and pay only $0.76 each
Buy 25 - 49 and pay only $0.74 each
Buy 50 or above and pay only $0.72 each
  • Info Image for our Heat Shrink Tube, Black 2.5mm Dia x 1200mm Long (Single Wall, 2:1 Shrink); Economical, pre-cut lengths of quality heat shrink.
  • 2.5mm Dia, 1200mm (4ft) long lengths of Black heat shrink sleeving. This insulation tube has a 2 to 1 shrink ratio and is extremely flexible, durable and easy to work with and install.
  • 2.5mm Dia, 1200mm (4ft) long lengths of Black heat shrink sleeving. This insulation tube has a 2 to 1 shrink ratio and is extremely flexible, durable and easy to work with and install.
  • Our range of Heat Shrink Tube Colours
  • Our range of Heat Shrink Tube Colours
Inc. GST
Frequently bought together:


  • Economical 1.2 Metre lengths allow you to buy just what you need for the job
  • Will shrink down to half their original diameter when exposed to heat (2:1 shrink ratio)
  • Tough and strong yet very flexible and easy to handle
  • Flame retarded and self-extinguishing. UV stabilised and rated to 600 volts.

Thin Wall Heat Shrink Tube in 1.2 Metre Lengths are ideal for those who don’t go through a lot of heat shrink and want to keep the amount they must buy to a minimum. Apart from the fact that these are pre-cut, 1200mm long lengths, these are exactly the same as our Thin Wall Heat Shrink Tubing Handy Packs. 

Like those, our Thin Wall Heat Shrink Tube has a 2:1 shrink ratio which means 20mm diameter sleeving will shrink down to just 10mm when heated. It does not have any adhesive lining and is incredibly flexible and easy to handle.

It should also be mentioned that even though these are the thin wall grade, they’re still incredibly tough and ideal for protecting cable joins from abrasion. They’ll shrink when exposed to temperatures of just 90°C and, once shrunk tolerate temperatures of up to 125°C and are UV stabilised, flame retardant and self-extinguishing (except for clear).

Please note this style of heat shrink tubing is not adhesive lined. The sizes listed on this page are their pre-shrunk size (i.e. 10mm listed here will shrink to 5mm).

This is just one size and colour in our large range of heat shrink tubing and insulation parts. To browse the full range, please click any of the links on the rigth.

Applications for Heat Shrink Tube

  • Protecting and insulating cable joins
  • Serving as an outer protective layer for softer primary insulation
  • Wire harnessing
  • Bundling cables and wires
  • Lead, component, wire and cable identification (colour coding)
  • Bus bar and switchgear insulation

Heat Shrink Tube to Lay Flat Internal Dimensions Table.

Heat Shrink Tube ID (As Supplied) Lay Flat ID
5mm Ø 8mm
7mm Ø 11mm
10mm Ø 16mm
13mm Ø 20mm
16mm Ø 25mm
20mm Ø 31mm
25mm Ø 39mm
30mm Ø 47mm
40mm Ø 63mm
50mm Ø 79mm
76mm Ø 119mm
100mm Ø 157mm
125mm Ø 196mm

Heat Shrink Tube, Thin Wall, Non-Adhesive Specifications and Technical Details

Specification Value Standard
Shrink Ratio 2 : 1  
Continuous Operating Temperature -55°C to +125°C IEC 216
Low Temperature Flexibility -55°C ASTM D-2671
UL Max. Temperature 125°C UL94, VW1
Dielectric Strength >20 kV/mm ASTM D-2671
Dielectric Constant 3.0 Max ASTM D-150
Volume Resistance 1016 Ohm/cm ASTM D-257
Tensile Strength 16 N/mm² ASTM D-638
Maximum Elongation 300% ASTM D-638
Longtitudinal Change >3% ASTM D-638
Water Absorption 0.15% Max. ASTM D-570
Fungus Resistance Inert MIL-1-7444
Copper Corrosion Good ASTM D-2671 B
Chemical Resistance Good  
Flammability Pass UL 2324-VW1
Heat Shock @ 250°C for 4 Hours No dripping, cracking or flowing  
Specifications @ Approvals
  • Mil-1-23053/5 Class 2&3
  • UL224, 125°C VW1
  • CSA C22.2 No. 198.1 OFT

Heat Shrink Tube FAQ's

How will I know when it’s stopped shrinking?

There’s no real way to tell other than direct observation.

How long does it take to shrink?

Technically, it depends on the degree of heat applied. That said, we’re guessing you’re after a general answer. In that case we can safely say that it’s seconds, not hours. If you can’t see it shrinking it’s either because it has as much as it can or there’s not enough heat being applied.

What’s the easiest way to get them to shrink?

This really depends on what you have available. A heat gun is ideal though a simple hair dryer will do the trick. We don’t encourage it for safety reasons but we do know (from experience we’re sorry to admit) that a naked flame from a lighter will do the job as well.

How to I cut it?

Scissors, Stanley knife, steak knife or any sharp implement will do the job.

Quick Links to Related Categories and Solutions

Pre-Cut Heat Shrink Lengths Range
Heat Shrink Sleevings Range
Heat Shrink Parts Range
Browse our Heat Shrink and Electrical Sleeving Products
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Additional Information

1.2 Metres
Minimum Continuous Temperature:
Maximum Continuous Temperature:
Dielectric Strength:
>20 kV/mm
Elongation at Break:
Food Grade / Potable Water Approvals?:
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