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. 700-4469
BrandRS PRO
MYR36.17
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm Clear Heat Shrink No 3:1 4 m Polyolefin No No - UL
RS Stock No. 219-6535
Mfr. Part No.DR-25-3/4-0-5
MYR476.50
1 Reel of 5 Metre(s)
Reel(s)
19mm 9.5mm Black Heat Shrink No 2:1 5 m Elastomer Yes No DR-25 -
RS Stock No. 874-1150
Mfr. Part No.V2-1.5-0-SP-SM
MYR254.53
1 Reel of 200
Reel(s)
2.1mm 0.75mm Black Heat Shrink No 2:1 200 m Polyolefin Yes Yes VERSAFIT V2 ASTM D2671, CSA LR31929, RoHS Compliant, UL Recognized E35586
RS Stock No. 295-9667
Mfr. Part No.HSR 4,8
Brand3M
MYR186.94
Each
units
4.8mm 2.4mm Black Heat Shrink - 2:1 10 m Polyolefin Yes - HSR -
RS Stock No. 288-5235
Mfr. Part No.RT-375-1/2-X-STK
MYR28.84
Each
units
12.7mm 6.4mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No RT-375 -
RS Stock No. 244-0804
Mfr. Part No.DR-25-3/16-0-SP
MYR1,772.98
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. 316-1596
Mfr. Part No.ATUM-19/6-0
MYR80.00
Each
units
19mm 6mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 170-6462
Mfr. Part No.RNF-100-3/32-9-STK
MYR8.90
Each
units
2.4mm 1.2mm White Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 832-6975
Mfr. Part No.318-31200 TA32-12/4-PO-X-BK (125)
MYR27.846
Each (In a Pack of 5)
units
12mm 4mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes - TA32 -
RS Stock No. 839-5466
Mfr. Part No.F2213/32 BK103
BrandAlpha Wire
MYR162.13
1 Box of 25
Box(es)
2.3mm 1.17mm Black Heat Shrink No 2:1 1.2 m Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 147-247
Mfr. Part No.202K121-25/225-CS-2065-0
MYR65.98
Each
units
- 8.4mm Black - Yes - - Fluid Resistant Elastomer - - 202K1 -
RS Stock No. 487-4451
Mfr. Part No.RNF-100-COL-KIT2
MYR609.62
Each
units
25.4mm 12.7mm - Heat Shrink No 2:1 Longueurs assorties Cross Linked Polyolefin Yes No RNF-100 -
RS Stock No. 839-5463
Mfr. Part No.F2213/32 BK061
BrandAlpha Wire
MYR2.093
Each
units
2.3mm 1.17mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 398-054
BrandRS PRO
MYR11.662
Each (In a Pack of 5)
units
12.7mm 6.4mm Green/Yellow Heat Shrink No 2:1 1.2 m 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. 821-4755
Mfr. Part No.F2213/32 BK002
BrandAlpha Wire
MYR684.68
1 Reel of 152 Metre(s)
Reel(s)
2.3mm 1mm Black Heat Shrink No 2:1 152 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 399-518
BrandRS PRO
MYR4.986
Each (In a Pack of 5)
units
4.8mm 2.4mm Yellow Heat Shrink No 2:1 1.2 m 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. 397-916
BrandRS PRO
MYR4.074
Each (In a Pack of 5)
units
6.4mm 3.2mm Blue Heat Shrink No 2:1 1.2 m Polyolefin Yes No - -
RS Stock No. 316-1625
Mfr. Part No.ATUM-4/1-0
MYR18.31
Each
units
4mm 1mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 100-3909
Mfr. Part No.DR-25-TW-3/32-0-SP
MYR5,161.04
1 Reel of 150
Reel(s)
2.4mm 1.2mm Black Heat Shrink No 2:1 150 m Elastomer Yes No DR-25-TW ELV, EU, RK-6008/2, VG 95343 Part 5 Type D
RS Stock No. 398-464
BrandRS PRO
MYR22.44
Each
units
1.6mm 0.8mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
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