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. 398-149
BrandRS PRO
MYR28.512
Each
units
25.4mm 12.7mm 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. 700-4595
BrandRS PRO
MYR41.23
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. 700-4686
BrandRS PRO
MYR47.91
1 Reel of 8 Metre(s)
Reel(s)
6.4mm 3.2mm Red Heat Shrink No 2:1 8m Polyolefin Yes No - UL
RS Stock No. 537-8077
BrandRS PRO
MYR51.93
1 Bag of 1
Bag(s)
12.7mm 6.4mm 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. 700-4608
BrandRS PRO
MYR59.54
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm Green/Yellow Heat Shrink No 3:1 4m Polyolefin Yes No - UL
RS Stock No. 481-1810
BrandRS PRO
MYR31.72
Each
units
12.7mm 4mm 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. 700-4709
BrandRS PRO
MYR37.30
1 Reel of 10 Metre(s)
Reel(s)
2.4mm 1.2mm Yellow Heat Shrink No 2:1 10m Polyolefin Yes No - UL
RS Stock No. 397-893
BrandRS PRO
MYR3.472
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. 700-4683
BrandRS PRO
MYR33.67
1 Reel of 9 Metre(s)
Reel(s)
4.8mm 2.4mm Red Heat Shrink No 2:1 9m Polyolefin Yes No - UL
RS Stock No. 392-309
BrandRS PRO
MYR36.156
Each (In a Pack of 5)
units
25.4mm 12.7mm 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. 398-290
BrandRS PRO
MYR5.974
Each (In a Pack of 5)
units
6.4mm 3.2mm Red Heat Shrink No 2:1 1.2m Polyolefin Yes No - -
RS Stock No. 700-4450
BrandRS PRO
MYR39.94
1 Reel of 5 Metre(s)
Reel(s)
9mm 3mm Clear Heat Shrink No 3:1 5m Polyolefin No No - UL
RS Stock No. 389-678
BrandRS PRO
MYR88.02
1 Reel of 12 Metre(s)
Reel(s)
9.5mm 4.7mm Black Heat Shrink No 2:1 12m Polyolefin No No - ELV, RoHS Compliant, SFP (R4-0580)
RS Stock No. 458-0689
BrandRS PRO
MYR113.41
1 Bag of 20
Bag(s)
9.5mm 3mm Clear Heat Shrink Yes 3:1 300mm Polyolefin No Yes - AMS-DTL-23053/4 Class 3, RoHS Compliant, UL 224 E75077 CSA C22.2 No.198.1
RS Stock No. 211-6191
BrandRS PRO
MYR77.60
1 Bag of 5
Bag(s)
1.6mm 0.8mm 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
RS Stock No. 241-7444
BrandRS PRO
MYR41.93
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. 241-7321
BrandRS PRO
MYR18.53
Each
units
3mm 1mm 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. 700-4484
BrandRS PRO
MYR42.86
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm Yellow Heat Shrink No 3:1 3m Polyolefin Yes No - UL
RS Stock No. 537-8106
BrandRS PRO
MYR106.02
1 Bag of 1
Bag(s)
19.1mm 9.5mm 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. 267-2051
BrandRS PRO
MYR156.51
1 Bag of 1
Bag(s)
38.1mm 19.1mm Yellow 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
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