Heat-Shrink & Cold-Shrink Sleeves

Heat Shrink
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. 398-082
BrandRS PRO
MYR7.802
Each (In a Pack of 5)
units
4.8mm 2.4mm Green/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. 562-640
BrandRS PRO
MYR251.12
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. 397-944
BrandRS PRO
MYR24.816
Each (In a Pack of 5)
units
19.1mm 9.5mm Blue Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 398-307
BrandRS PRO
MYR5.162
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. 700-4488
BrandRS PRO
MYR58.35
1 Reel of 3 Metre(s)
Reel(s)
24mm 8mm Yellow Heat Shrink No 3:1 3m Polyolefin Yes No - UL
RS Stock No. 483-4318
BrandRS PRO
MYR37.11
Each (In a Pack of 5)
units
25.4mm 12.7mm Brown 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. 483-4144
BrandRS PRO
MYR5.366
Each (In a Pack of 5)
units
4.8mm 2.4mm 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. 399-489
BrandRS PRO
MYR4.314
Each (In a Pack of 5)
units
1.6mm 0.8mm 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. 389-707
BrandRS PRO
MYR119.03
1 Reel of 3 Metre(s)
Reel(s)
25.4mm 12.7mm Black Heat Shrink No 2:1 3m Polyolefin No No - ELV, RoHS Compliant, SFP (R4-0580)
RS Stock No. 700-4523
BrandRS PRO
MYR45.03
1 Reel of 3 Metre(s)
Reel(s)
24mm 8mm Red Heat Shrink No 3:1 3m Polyolefin Yes No - UL
RS Stock No. 398-183
BrandRS PRO
MYR8.316
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. 399-899
BrandRS PRO
MYR4.672
Each (In a Pack of 5)
units
1.6mm 0.8mm Clear Heat Shrink No 2:1 1.2m Polyolefin No Yes - 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. 398-161
BrandRS PRO
MYR6.34
Each
units
12.7mm 6.4mm 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. 458-0718
BrandRS PRO
MYR30.94
1 Bag of 10
Bag(s)
- 1.5 → 2.5mm Blue Heat Shrink No 1:1 37mm Polyolefin - - - RoHS Compliant
RS Stock No. 700-4466
BrandRS PRO
MYR52.54
1 Reel of 3 Metre(s)
Reel(s)
24mm 8mm Clear Heat Shrink No 3:1 3m Polyolefin No No - UL
RS Stock No. 398-442
BrandRS PRO
MYR23.50
Each
units
3.2mm 1.6mm Clear Heat Shrink No 2:1 1.2m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 483-4166
BrandRS PRO
MYR11.612
Each (In a Pack of 5)
units
9.5mm 4.8mm 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. 700-4582
BrandRS PRO
MYR48.17
1 Reel of 10 Metre(s)
Reel(s)
3mm 1mm Green/Yellow Heat Shrink No 3:1 10m Polyolefin Yes No - UL
RS Stock No. 241-7545
BrandRS PRO
MYR95.34
Each
units
24mm 8mm Blue 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. 417-9087
BrandRS PRO
MYR664.25
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
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