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. 448-263
Mfr. Part No.901-10158
TWD693.00
1 Reel of 5 Metre(s)
Reel(s)
9mm 3mm Black Heat Shrink - 3:1 5 m Cross Linked Polyolefin Yes - HIS-3 -
RS Stock No. 484-8935
Mfr. Part No.HFT5000-40/20-0-RSU-5M
TWD683.00
1 Bag of 5
Bag(s)
40mm 20mm Black Heat Shrink No 2:1 5 m PE/PET Yes Yes HFT5000 -
RS Stock No. 481-1854
BrandRS PRO
TWD662.00
Each
units
40mm 13mm 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. 308-042
Mfr. Part No.804240
Brand3M
TWD746.00
Each
units
67.8mm 32.2mm Black Cold Shrink - - 152 mm EPR - - - -
RS Stock No. 874-0973
Mfr. Part No.RBK-ILS-125-NR2-0-50MM
TWD7.00
Each (In a Pack of 100)
units
7.5mm 1.65mm Black Heat Shrink Yes 4:1 50 mm Polyolefin Yes Yes RBK-ILS-125 ELV, RoHS Compliant
RS Stock No. 177-9246
Mfr. Part No.RNF 3000-3/1-X-2
TWD133.00
Each
units
3mm 1mm Clear Heat Shrink No 3:1 1.2 m Polyolefin No No RNF-3000 UL
RS Stock No. 396-4660
Mfr. Part No.RNF-100-1-0-FSP
TWD12,382.00
1 Reel of 60
Reel(s)
25.4mm 12.7mm Black Heat Shrink No 2:1 60 m Polyolefin Yes No RNF-100 -
RS Stock No. 170-6440
Mfr. Part No.RNF-100-1-0-STK
TWD290.00
Each
units
25.4mm 12.7mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 483-4100
BrandRS PRO
TWD35.80
Each (In a Pack of 5)
units
1.6mm 0.8mm Grey 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. 157-3789
Mfr. Part No.CGAT-3/1-0-RS-157-3789
TWD199.00
Each
units
3mm 1mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No CGAT E85381
RS Stock No. 417-7312
BrandRS PRO
TWD2,856.00
1 Bag of 20
Bag(s)
38mm 19mm 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. 700-4646
BrandRS PRO
TWD606.00
1 Reel of 8 Metre(s)
Reel(s)
6.4mm 3.2mm Black Heat Shrink No 2:1 8 m Polyolefin Yes No - UL
RS Stock No. 208-8686
Mfr. Part No.HSB 1000-9
TWD920.00
Each
units
25.4mm 12.7mm White Heat Shrink - 2:1 3.3 m Cross Linked Polyolefin Yes - Shrink-Kon -
RS Stock No. 433-0765
Mfr. Part No.RW-175-1/2-0-RSU-STK
TWD493.00
Each
units
12.7mm 6.4mm Black Heat Shrink No 2:1 1.2 m PVDF Yes No RW-175 -
RS Stock No. 252-7721
Mfr. Part No.VFRS-1/2-0
TWD660.00
1 Reel of 6 Metre(s)
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 6 m Polyolefin Yes No VERSAFIT -
RS Stock No. 894-7982
Mfr. Part No.Versafit-1/2-0-SP-SM
TWD6,771.00
1 Reel of 45 Metre(s)
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 45 m Polyolefin No No VERSAFIT AMS-DTL-23053/5, CSA, E35586 VW-1, LR31929 VW-1, MIL-DTL-23053/5, MIL-I-23053/5, RoHS Complaint, RW-3009, UL Recognisation
RS Stock No. 398-464
BrandRS PRO
TWD92.00
Each
units
1.6mm 0.8mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 700-4541
BrandRS PRO
TWD476.00
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm Black Heat Shrink No 3:1 3 m Polyolefin Yes No - UL
RS Stock No. 832-6978
Mfr. Part No.318-30600 TA32-6/2-PO-X-BK (250)
TWD135.40
Each (In a Pack of 5)
units
6mm 2mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes - TA32 -
RS Stock No. 288-5235
Mfr. Part No.RT-375-1/2-X-STK
TWD214.00
Each
units
12.7mm 6.4mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No RT-375 -