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.

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 Series Standards Met
RS Stock No. 397-679
BrandRS PRO
£72.00
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. 562-646
BrandRS PRO
£55.00
1 Kit
Kit(s)
3.2 mm, 4.8 mm, 6.4 mm, 9.5 mm Assortiment Black, Blue, Green/Yellow, Red, White Heat Shrink Yes 2:1 110mm Polyolefin Yes - - RoHS Compliant
RS Stock No. 417-9087
BrandRS PRO
£85.00
1 Kit
Kit(s)
3mm 1.5mm Blue, Red, White, Yellow Heat Shrink Yes 3:1 Assortiment Polyolefin Yes No - CSA C22.2 No. 198.1, IEC 60684-3-242, MIL SAE-AMS-DTL 23053/4 Class 3, RoHS Compliant, UL 224 E75077
RS Stock No. 562-652
BrandRS PRO
£61.37
1 Kit
Kit(s)
6.4 mm, 9.5 mm, 12.7 mm, 19.1 mm, 25.4 mm Assortiment Black, Blue, Green/Yellow, Red, White Heat Shrink No 2:1 Longueurs assorties Polyolefin Yes - - RoHS Compliant
RS Stock No. 562-640
BrandRS PRO
£44.00
1 Kit
Kit(s)
12.7 mm, 19.1 mm, 25.4 mm, 38.1 mm Assortiment Blue, Red, White, Yellow Heat Shrink Yes 2:1, 3:1 Longueurs assorties Polyolefin Yes - - RoHS Compliant
RS Stock No. 397-4263
BrandRS PRO
£76.50
1 Kit
Kit(s)
2.4 mm, 3.2 mm, 4.8 mm, 6.4 mm, 9.5 mm, 12.7 mm Assortiment Black, Blue, Green/Yellow, Red, White Heat Shrink Yes 2:1 Longueurs assorties Polyolefin Yes Yes - LUL, RoHS Compliant
RS Stock No. 241-7359
BrandRS PRO
£3.87
Each
Units
3mm 1mm White 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. 700-4560
BrandRS PRO
£11.00
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm White Heat Shrink No 3:1 4m Polyolefin Yes No - UL
RS Stock No. 700-4557
BrandRS PRO
£12.60
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm White Heat Shrink No 3:1 7m Polyolefin Yes No - UL
RS Stock No. 241-7488
BrandRS PRO
£3.00
Each
Units
12.7mm 4mm White 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. 700-4551
BrandRS PRO
£11.75
1 Reel of 5 Metre(s)
Reel(s)
9mm 3mm White Heat Shrink No 3:1 5m Polyolefin Yes No - UL
RS Stock No. 392-242
BrandRS PRO
£1.576
Each (In a Pack of 5)
Units
3.2mm 1.6mm White 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. 700-4554
BrandRS PRO
£12.00
1 Reel of 10 Metre(s)
Reel(s)
3mm 1mm White Heat Shrink No 3:1 10m Polyolefin Yes No - UL
RS Stock No. 241-7393
BrandRS PRO
£4.68
Each
Units
6.4mm 2mm White 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. 241-7523
BrandRS PRO
£7.70
Each
Units
19mm 6mm White 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. 700-4765
BrandRS PRO
£9.00
1 Reel of 10 Metre(s)
Reel(s)
2.4mm 1.2mm White Heat Shrink No 2:1 10m Polyolefin Yes No - UL
RS Stock No. 392-315
BrandRS PRO
£10.00
Each (In a Pack of 5)
Units
38.1mm 19.1mm White 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. 241-7444
BrandRS PRO
£5.52
Each
Units
9.5mm 3mm White 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. 700-4567
BrandRS PRO
£10.95
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm White Heat Shrink No 3:1 3m Polyolefin Yes No - UL
RS Stock No. 392-286
BrandRS PRO
£2.89
Each (In a Pack of 5)
Units
12.7mm 6.4mm White 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