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. 147-152
Mfr. Part No.222K121-25/225-CS-2065-0
SGD22.40
Each
units
- 5.6mm Black - - - - Fluid Resistant Elastomer - - 222K1 -
RS Stock No. 157-3789
Mfr. Part No.CGAT-3/1-0-RS-157-3789
SGD10.76
Each
units
3mm 1mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No CGAT E85381
RS Stock No. 244-0804
Mfr. Part No.DR-25-3/16-0-SP
SGD566.62
1 Reel of 50 Metre(s)
Reel(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 50 m Elastomer Yes No DR-25 -
RS Stock No. 157-3852
Mfr. Part No.DWTC-8/2-X-STK
SGD23.73
Each
units
8mm 2mm Clear Heat Shrink Yes 4:1 1.2 m Polyolefin No No DWTC -
RS Stock No. 157-3818
Mfr. Part No.CGAT-12/4-0
SGD12.91
Each
units
12mm 4mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No CGAT E85381
RS Stock No. 219-6490
Mfr. Part No.DR-25-3/16-0-10
SGD17.421
Each
units
4.8mm 2.4mm Black Heat Shrink No 2:1 10 m Elastomer Yes No DR-25 -
RS Stock No. 157-3795
Mfr. Part No.CGAT-6/2-0
SGD12.07
Each
units
6mm 2mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No CGAT E85381
RS Stock No. 170-6311
Mfr. Part No.TFER-1/2-X
SGD58.38
Each
units
12.7mm 3.7mm Clear Heat Shrink No 3.2:1 1.2 m Teflon Fluoropolymer Yes No TFER ASTM D 876-00, ASTM D2671, Class 5, Def. Stan. 59-97 Type 5B, IEC 60243, Military AMS-DTL-23053/12 Class 3, Raychem RW-2054
RS Stock No. 170-6298
Mfr. Part No.TFER-1/4-X
SGD18.72
Each
units
6.4mm 1.6mm Clear Heat Shrink No 3.2:1 1.2 m Teflon Fluoropolymer Yes No TFER ASTM D 876-00, ASTM D2671, Class 5, Def. Stan. 59-97 Type 5B, IEC 60243, Military AMS-DTL-23053/12 Class 3, Raychem RW-2054
RS Stock No. 267-2152
BrandRS PRO
SGD48.51
1 Bag of 1
Bag(s)
38.1mm 19.1mm Blue Heat Shrink No 2:1 1.2 m 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. 113-2322
Mfr. Part No.RNF-100-1-1/2-0-STK
SGD23.17
Each
units
38mm 19mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 515-5565
Mfr. Part No.18055
BrandDymo
SGD99.86
Each
units
12mm 3mm White Heat Shrink No 3:1 1.5 m Polyolefin Yes - DYMO -
RS Stock No. 481-1775
BrandRS PRO
SGD8.71
Each
units
3mm 1mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No - AMS-DTL-23053/4 Class 3, RoHS Compliant, UL 224 E75077 CSA C22.2 No.198.1
RS Stock No. 219-6513
Mfr. Part No.DR-25-3/8-0-10
SGD18.288
Each
units
9.5mm 4.8mm Black Heat Shrink No 2:1 10 m Elastomer Yes No DR-25 -
RS Stock No. 113-2568
Mfr. Part No.RNF-100-1-1/2-X-STK
SGD27.75
Each
units
38mm 19mm Clear Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 654-4095
Mfr. Part No.RW-200-E-3/4-0
SGD266.26
1 Reel of 5 Metre(s)
Reel(s)
19.1mm 9.5mm Black Heat Shrink No 2:1 5 m Viton Cross Linked Fluoroelastomer No No RW-200 -
RS Stock No. 484-8957
Mfr. Part No.HFT5000-60/30.0
SGD65.05
1 Bag of 5
Bag(s)
60mm 30mm Black Heat Shrink No 2:1 5 m PE/PET Yes Yes HFT5000 -
RS Stock No. 330-4765
Mfr. Part No.TFER-5/64-X
SGD18.17
Each
units
2mm 0.6mm Clear Heat Shrink No 3.2:1 1.2 m Teflon Fluoropolymer Yes No TFER ASTM D 876-00, ASTM D2671, Class 5, Def. Stan. 59-97 Type 5B, IEC 60243, Military AMS-DTL-23053/12 Class 3, Raychem RW-2054
RS Stock No. 244-0826
Mfr. Part No.DR-25-3/8-0-SP
SGD469.23
1 Reel of 50 Metre(s)
Reel(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 50 m Elastomer Yes No DR-25 -
RS Stock No. 170-6642
Mfr. Part No.RNF-100-1/2-X-STK
SGD7.90
Each
units
12.7mm 6.4mm Clear Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -