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. 537-8140
BrandRS PRO
SGD41.30
1 Bag of 1
Bag(s)
38.1mm 19.1mm Grey Heat Shrink No 2:1 1.2m Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, DEF 59-97 Issue3 Type 8, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant
RS Stock No. 700-4478
BrandRS PRO
SGD25.91
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm Yellow Heat Shrink No 3:1 7m Polyolefin Yes No - UL
RS Stock No. 397-916
BrandRS PRO
SGD3.946
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. 666-925
BrandRS PRO
SGD28.82
1 Box of 6 Metre(s)
Box(es)
19.1mm 9.5mm Black Heat Shrink No 2:1 6m Polyolefin Yes No - RoHS Compliant, UL
RS Stock No. 398-442
BrandRS PRO
SGD5.72
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. 700-4595
BrandRS PRO
SGD20.02
1 Reel of 5 Metre(s)
Reel(s)
9mm 3mm Green, Yellow Heat Shrink No 3:1 5m Polyolefin Yes No - UL
RS Stock No. 398-420
BrandRS PRO
SGD11.17
Each
units
6.4mm 3.2mm Clear Heat Shrink No 2:1 1.2m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 700-4526
BrandRS PRO
SGD22.82
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm Red Heat Shrink No 3:1 4m Polyolefin Yes No - UL
RS Stock No. 399-495
BrandRS PRO
SGD3.022
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. 700-4551
BrandRS PRO
SGD24.26
1 Reel of 5 Metre(s)
Reel(s)
9mm 3mm White Heat Shrink No 3:1 5m Polyolefin Yes No - UL
RS Stock No. 700-4462
BrandRS PRO
SGD23.03
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm Clear Heat Shrink No 3:1 3m Polyolefin No No - UL
RS Stock No. 392-292
BrandRS PRO
SGD5.838
Each (In a Pack of 5)
units
19.1mm 9.5mm 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. 481-1854
BrandRS PRO
SGD29.88
Each
units
40mm 13mm 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. 700-4554
BrandRS PRO
SGD2.499
Each
units
3mm 1mm White Heat Shrink No 3:1 10m Polyolefin Yes No - UL
RS Stock No. 392-270
BrandRS PRO
SGD3.978
Each (In a Pack of 5)
units
9.5mm 4.8mm 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. 483-4188
BrandRS PRO
SGD7.004
Each (In a Pack of 5)
units
19mm 9.5mm 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. 241-7444
BrandRS PRO
SGD11.45
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. 398-436
BrandRS PRO
SGD8.62
Each
units
4.8mm 2.4mm Clear Heat Shrink No 2:1 1.2m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 537-7945
BrandRS PRO
SGD5.29
1 Bag of 1
Bag(s)
1.6mm 0.8mm Brown Heat Shrink No 2:1 1.2m Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, DEF 59-97 Issue3 Type 8, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant
RS Stock No. 211-6236
BrandRS PRO
SGD43.66
1 Bag of 5
Bag(s)
6.4mm 3.2mm Black Heat Shrink No 2:1 1.2m Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, DEF 59-97 Issue3 Type 8, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant