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. 170-6399
Mfr. Part No.RNF-100-3/16-0-STK
TWD91.00
Each
units
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 122-3470
Mfr. Part No.DWFR-3/1-0-STK
TWD225.60
Each (In a Pack of 25)
units
3mm 1mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No DWFR -
RS Stock No. 181-8966
Mfr. Part No.F4009 NA103
BrandAlpha Wire
TWD125,971.00
1 Bag of 25
Bag(s)
4.01mm 3.15mm Natural Heat Shrink - 1.2:1 1.2 m FEP Yes - FIT-400 AMS-DTL-23053/11 Class 1, EC 1907/2006, EU Directive 2011/65, UL 94V-0
RS Stock No. 450-519
Mfr. Part No.901-10204
TWD604.00
Each
units
40mm 12mm Black Heat Shrink - 4:1 1 m Cross Linked Polyolefin - - MU47 -
RS Stock No. 874-1178
Mfr. Part No.V2-9.0-0-FSP-SM
TWD2,630.00
1 Reel of 50
Reel(s)
9.6mm 4.5mm Black Heat Shrink No 2:1 50 m Polyolefin Yes Yes VERSAFIT V2 ASTM D2671, CSA LR31929, RoHS Compliant, UL Recognized E35586
RS Stock No. 181-8959
Mfr. Part No.F40024 NA103
BrandAlpha Wire
TWD5,490.00
1 Bag of 25
Bag(s)
0.79mm 0.69mm Natural Heat Shrink - 1.2:1 1.2 m FEP Yes - FIT-400 AMS-DTL-23053/11 Class 1, EC 1907/2006, EU Directive 2011/65, UL 94V-0
RS Stock No. 914-6809
Mfr. Part No.318-41200 TA42-12/3-PO-X-BK (125)
TWD518.00
Each
units
12mm 3mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes - TA42 CSA, SAE, UL Listed, UL Recognized
RS Stock No. 805-5348
Mfr. Part No.RW-175-E-3/8-X
TWD622.00
Each
units
9.5mm 4.8mm Clear Heat Shrink No 2:1 1.2 m PVDF Yes No RW-175 -
RS Stock No. 873-9056
Mfr. Part No.CGPT-6.4/3.2-9-SP
TWD7,213.00
1 Reel of 150
Reel(s)
6.4mm 3.2mm White Heat Shrink No 2:1 150 m Polyolefin Yes Yes CGPT ASTM D2671, CSA LR31929, IEC 243, Raychem RW-2059, UL Recognized E35586
RS Stock No. 170-6428
Mfr. Part No.RNF-100-1/2-0-STK
TWD109.00
Each
units
12.7mm 6.4mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 811-2716
Mfr. Part No.MDTA50/18
Brand3M
TWD872.00
Each
units
50mm 18mm Black Heat Shrink Yes 4.5:1 1 m Polyolefin Yes - MDT-A -
RS Stock No. 181-8951
Mfr. Part No.F40012 NA103
BrandAlpha Wire
TWD86,336.00
1 Bag of 25
Bag(s)
2.92mm 2.26mm Natural Heat Shrink - 1.2:1 1.2 m FEP Yes - FIT-400 AMS-DTL-23053/11 Class 1, EC 1907/2006, EU Directive 2011/65, UL 94V-0
RS Stock No. 817-9081
Mfr. Part No.F221L3/4 BK004
BrandAlpha Wire
TWD618,516.00
1 Reel of 61 Metre(s)
Reel(s)
19mm 10mm Black Heat Shrink - 2:1 60.9 m LSZH Polyolefin - - FIT-221L -
RS Stock No. 873-8703
Mfr. Part No.ZH2-3.0-0-SP-SM
TWD4,123.00
1 Reel of 200 Metre(s)
Reel(s)
3.6mm 1.5mm Black Heat Shrink No 2:1 200 m Polyolefin Yes Yes ZH2 ASTM D2671, CSA LR31929 VW-1, Raychem RW-3036, UL 224, UL Recognized E35586 VW-1
RS Stock No. 181-8980
Mfr. Part No.F6001IN BK008
BrandAlpha Wire
TWD34,172.00
1 Reel of 7 Metre(s)
Reel(s)
25.4mm 14.48mm Black Heat Shrink - 2:1 7.6 m Chlorinated Polyolefin Yes - FIT-600 AMS-DTL-23053/1 Class 1 & 2, EC 1907/2006, EU Directive 2011/65
RS Stock No. 448-253
Mfr. Part No.308-30307
TWD193.60
Each
units
3mm 1mm Green/Yellow Heat Shrink - 3:1 10 m Cross Linked Polyolefin Yes - HIS-3 -
RS Stock No. 397-944
BrandRS PRO
TWD154.60
Each (In a Pack of 5)
units
19.1mm 9.5mm Blue Heat Shrink No 2:1 1.2 m Polyolefin Yes No - -
RS Stock No. 443-4974
BrandRS PRO
TWD1,267.00
1 Bag of 20
Bag(s)
25.4mm 12.7mm 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. 267-2089
BrandRS PRO
TWD161.00
1 Bag of 1
Bag(s)
3.2mm 1.6mm 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. 113-2344
Mfr. Part No.RNF-100-1/16-4-STK
TWD82.00
Each
units
1.6mm 0.8mm Yellow Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -