Heat-Shrink & Cold-Shrink Sleeves

Heat shrink tubing is a type of extruded plastic tube that reduces in size when heated to a pre-determined shrink ratio to fit a specific application. A sleeve should be selected in a size larger than required to cover both the wire and components it is to be used with, before being shrunk to fit. Once fitted, the sleeve provides long lasting durability. For help selecting the right size heat shrink tubing, please see our heat shrink guide.

Materials and Types
Heat shrink is available in various different materials, colours, sizes and shrink ratios to suit the application required. Some are available with an adhesive lining that helps to bond the tubing with the cables and components.
Polyolefin is the most common material as it is highly durable and can withstand high temperatures without a restricted shelf life. They are also manufactured from PVC, fluoropolymer, neoprene and elastomeric materials.

The material is often cross linked to assist with the tubing shrinking back to its original dimensions.
The pre-determined shrink ratio, for example, 2:1 or 3:1, is the measurement of how small the sleeve goes in comparison to its expanded size. When the number is higher in the shrink ratio the greater the shrinkage. It allows a precise, secure fit that does not come off easily.

Applications
Heat shrink tubing is versatile and easy to use therefore it can be applied in an assortment of applications, the most common uses being:
  • Electrical insulation – covering joints and repairs
  • Strain relief – relieving pressure from the cable
  • Wire bundling – in harness building and cable organisation
  • Environmental and mechanical protection – preventing damage from abrasion, moisture, dust and chemicals
  • Identification – the wide range of colours the tubing is manufactured in allows it to be used for colour coding and component ID

Installation
When selecting the right size tubing, you should consider the maximum and minimum diameter of what you are covering. Use this information to check against the recovered diameter (the diameter after shrinking) and expanded diameter (the pre-shrinkage diameter) of the sleeve.

You can cut most tubing to a suitable length using standard scissors. The unshrunk tubing can be slid over the area or objects it is to cover. Then with a hand held heat gun or heat shrink oven, the sleeve is shrunk tightly. To prevent uneven shrinkage or overheating, check the recommended heating temperature beforehand.

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Description Price Sleeve Diameter Shrunk Diameter Colour Sleeve Type Adhesive Lined Shrink Ratio Sleeve Length Material Flame Retardant Halogen Free Priced to Clear Series Standards Met
RS Stock No. 487-3852
BrandRS PRO
£49.50
Each
Units
Assorted Assorted Assorted Heat Shrink Yes 2:1, 3:1 Assorted Lengths Polyolefin Yes - - - RoHS Compliant
RS Stock No. 700-4535
BrandRS PRO
£12.60
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm Black Heat Shrink No 3:1 7m Polyolefin Yes No - - UL
RS Stock No. 700-4532
BrandRS PRO
£12.00
1 Reel of 10 Metre(s)
Reel(s)
3mm 1mm Black Heat Shrink No 3:1 10m Polyolefin Yes No - - UL
RS Stock No. 397-679
BrandRS PRO
£71.98
Each
Units
2.4 mm, 3 mm, 3.2 mm, 4.8 mm, 6.4 mm, 9.5 mm, 12.7 mm Assortiment Black, Blue, Brown, Green/Yellow, Red, White, Yellow Heat Shrink Yes 2:1, 3:1 - Polyolefin Yes - - - RoHS Compliant
RS Stock No. 700-4539
BrandRS PRO
£11.75
1 Reel of 5 Metre(s)
Reel(s)
9mm 3mm Black Heat Shrink No 3:1 5m Polyolefin Yes No - - UL
RS Stock No. 700-4541
BrandRS PRO
£10.95
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm Black Heat Shrink No 3:1 3m Polyolefin Yes No - - UL
RS Stock No. 700-4548
BrandRS PRO
£11.00
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm Black Heat Shrink No 3:1 4m Polyolefin Yes No - - UL
RS Stock No. 700-4545
BrandRS PRO
£12.45
1 Reel of 3 Metre(s)
Reel(s)
24mm 8mm Black Heat Shrink No 3:1 3m Polyolefin Yes No - - UL
RS Stock No. 481-1775
BrandRS PRO
£3.87
Each
Units
3mm 1mm Black Heat Shrink Yes 3:1 1.2m Polyolefin Yes No - - AMS-DTL-23053/4 Class 3, RoHS Compliant, UL 224 E75077 CSA C22.2 No.198.1
RS Stock No. 417-7255
BrandRS PRO
£9.60
1 Bag of 20 Metre(s)
Bag(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 300mm Polyolefin Yes No - - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 398-199
BrandRS PRO
£1.488
Each
Units
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2m Polyolefin Yes No - - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 666-880
BrandRS PRO
£37.86
1 Box of 20 Metre(s)
Box(es)
4.8mm 2.4mm Black Heat Shrink No 2:1 20m Polyolefin Yes No - - RoHS Compliant, UL
RS Stock No. 417-7261
BrandRS PRO
£15.30
1 Bag of 20 Metre(s)
Bag(s)
6.4mm 3.2mm Black Heat Shrink No 2:1 66 x 300mm Polyolefin Yes No - - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 398-183
BrandRS PRO
£2.25
Each
Units
6.4mm 3.2mm Black Heat Shrink No 2:1 1.2m Polyolefin Yes No - - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 666-896
BrandRS PRO
£27.57
1 Box of 15 Metre(s)
Box(es)
6.4mm 3.2mm Black Heat Shrink No 2:1 15m Polyolefin Yes No - - RoHS Compliant, UL
RS Stock No. 666-852
BrandRS PRO
£10.25
1 Box of 25 Metre(s)
Box(es)
1.6mm 0.8mm Black Heat Shrink No 2:1 25m Polyolefin Yes No - - RoHS Compliant, UL
RS Stock No. 417-7211
BrandRS PRO
£5.25
1 Bag of 20 Metre(s)
Bag(s)
1.6mm 0.8mm Black Heat Shrink No 2:1 300mm Polyolefin Yes No - - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 398-228
BrandRS PRO
£1.224
Each
Units
1.6mm 0.8mm Black Heat Shrink No 2:1 1.2m Polyolefin Yes No - - -
RS Stock No. 417-7249
BrandRS PRO
£8.80
1 Bag of 20
Bag(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 300mm Polyolefin Yes No - - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 398-206
BrandRS PRO
£1.576
Each (In a Pack of 5)
Units
3.2mm 1.6mm Black Heat Shrink No 2:1 1.2m Polyolefin Yes No - - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
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