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 Series Standards Met
RS Stock No. 700-4664
BrandRS PRO
£11.92
1 Reel of 5 Metre(s)
Reel(s)
19mm 9.5mm Black Heat Shrink No 2:1 5m Polyolefin Yes No - UL
RS Stock No. 398-048
BrandRS PRO
£4.41
Each (In a Pack of 5)
Units
19.1mm 9.5mm Green 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. 398-082
BrandRS PRO
£8.06
1 Pack of 5
Pack(s)
4.8mm 2.4mm Green 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. 398-284
BrandRS PRO
£2.212
Each (In a Pack of 5)
Units
9.5mm 4.8mm Red Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 397-893
BrandRS PRO
£1.608
Each (In a Pack of 5)
Units
3.2mm 1.6mm Blue Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 398-307
BrandRS PRO
£1.644
Each (In a Pack of 5)
Units
4.8mm 2.4mm Red Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 398-032
BrandRS PRO
£6.436
Each (In a Pack of 5)
Units
25.4mm 12.7mm Green 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. 397-916
BrandRS PRO
£2.296
Each (In a Pack of 5)
Units
6.4mm 3.2mm Blue Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 397-900
BrandRS PRO
£1.644
Each (In a Pack of 5)
Units
4.8mm 2.4mm Blue Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 399-495
BrandRS PRO
£1.486
Each (In a Pack of 5)
Units
2.4mm 1.2mm Yellow 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. 397-922
BrandRS PRO
£2.212
Each (In a Pack of 5)
Units
9.5mm 4.8mm Blue Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 241-7602
BrandRS PRO
£22.46
Each
Units
40mm 13mm Red 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. 700-4582
BrandRS PRO
£1.44
Each
Units
3mm 1mm Green Heat Shrink No 3:1 - Polyolefin Yes No - UL
RS Stock No. 700-4560
BrandRS PRO
£11.22
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm White Heat Shrink No 3:1 4m Polyolefin Yes No - UL
RS Stock No. 241-7359
BrandRS PRO
£3.95
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. 700-4557
BrandRS PRO
£12.85
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm White Heat Shrink No 3:1 7m Polyolefin Yes No - UL
RS Stock No. 562-662
BrandRS PRO
£13.50
1 Bag of 1
Bag(s)
19.1mm 6mm Black Heat Shrink Yes 3:1 1.2m Polyolefin Yes Yes - ASTM, BS 6853, BSS 7239, LUL E 1042. A6, RoHS Compliant, SAE-AMS-DTL-23053
RS Stock No. 483-4150
BrandRS PRO
£2.204
Each (In a Pack of 5)
Units
6.4mm 3.2mm Grey 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. 399-502
BrandRS PRO
£1.864
Each (In a Pack of 5)
Units
3.2mm 1.6mm Yellow 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. 700-4513
BrandRS PRO
£12.85
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm Red Heat Shrink No 3:1 7m Polyolefin Yes No - UL
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