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. 308-042
Mfr. Part No.804240
Brand3M
HK$186.67
Each
units
67.8mm 32.2mm Black Cold Shrink - - 152 mm EPR - - - -
RS Stock No. 219-6490
Mfr. Part No.DR-25-3/16-0-10
HK$91.28
Each
units
4.8mm 2.4mm Black Heat Shrink No 2:1 10 m Elastomer Yes No DR-25 -
RS Stock No. 113-2322
Mfr. Part No.RNF-100-1-1/2-0-STK
HK$114.40
Each
units
38mm 19mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 170-6737
Mfr. Part No.CGPT-R-12.7-0
HK$114.62
1 Reel of 6 Metre(s)
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 6 m Polyolefin Yes Yes CGPT -
RS Stock No. 344-0647
Mfr. Part No.HTAT-16/4-0-STK
HK$150.36
Each
units
16mm 4mm Black Heat Shrink Yes 4:1 1.2 m Cross Linked Polyolefin Yes No HTAT -
RS Stock No. 417-7211
BrandRS PRO
HK$93.40
1 Bag of 20
Bag(s)
1.6mm 0.8mm Black Heat Shrink No 2:1 300 mm 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. 316-1625
Mfr. Part No.ATUM-4/1-0
HK$82.30
Each
units
4mm 1mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 157-3802
Mfr. Part No.CGAT-9/3-0
HK$74.71
Each
units
9mm 3mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No CGAT E85381
RS Stock No. 894-7897
Mfr. Part No.RNF-100-1/2-0-SP
HK$3,256.13
1 Reel of 150
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 150 m Polyolefin No No RNF-100 AMS-DTL-23053/5, CSA, E35586, LR31929, MIL-DTL-23053/5, MIL-I-23053/5, RoHS Complaint, UL Recognisation, VDE 0341 Pt 9005
RS Stock No. 170-6614
Mfr. Part No.RNF-100-3/16-X-STK
HK$17.59
Each
units
4.8mm 2.4mm Clear Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 618-9402
Mfr. Part No.HFT5000-20/10-0
HK$20.134
Each
units
20mm 10mm Black Heat Shrink No 2:1 10 m PE/PET Yes Yes HFT5000 -
RS Stock No. 487-4300
Mfr. Part No.RNF-100-3/4-1-STK
HK$43.10
Each
units
19mm 9.5mm Brown Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 341-5966
Mfr. Part No.RNF-100-3/8-2-STK
HK$33.35
Each
units
9.5mm 4.8mm Red Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 241-7501
BrandRS PRO
HK$86.40
Each
units
19mm 6mm Blue 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. 487-4388
Mfr. Part No.RNF-100-3/8-8-STK
HK$29.17
Each
units
9.5mm 4.8mm Grey Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 487-4401
Mfr. Part No.RNF-100-3/4-8-STK
HK$43.10
Each
units
19mm 9.5mm Grey Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 873-9191
Mfr. Part No.TFER-5/8-X-STK
HK$216.67
Each
units
15.9mm 4.5mm Clear Heat Shrink No 3.2:1 1.2 m PTFE Yes Yes 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. 654-4051
Mfr. Part No.RW-200-E-3/16-0
HK$1,262.75
1 Reel of 9 Metre(s)
Reel(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 9 m Viton Cross Linked Fluoroelastomer No No RW-200 -
RS Stock No. 443-4996
BrandRS PRO
HK$733.34
1 Bag of 20
Bag(s)
50.8mm 25.4mm Clear Heat Shrink No 2:1 300 mm 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. 344-0603
Mfr. Part No.HTAT-4/1-0-STK
HK$42.79
Each
units
4mm 1mm Black Heat Shrink Yes 4:1 1.2 m Cross Linked Polyolefin Yes No HTAT -
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