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. 316-1085
Mfr. Part No.HRSR-175FR-10
SGD65.97
Each
units
44.4mm 8mm Black Heat Shrink No 5.6:1 254 mm Polyolefin Yes No HRSR -
RS Stock No. 450-569
Mfr. Part No.323-20750 MA47-75/22-PO-X-BK
SGD56.57
Each
units
75mm 22mm Black Heat Shrink Yes 4:1 1 m Cross Linked Polyolefin - - MA47 -
RS Stock No. 914-6824
Mfr. Part No.318-45200 TA42-52/13-PO-X-BK (10)
SGD113.04
Each
units
52mm 13mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes - TA42 CSA, SAE, UL Listed, UL Recognized
RS Stock No. 398-458
BrandRS PRO
SGD6.50
Each
units
2.4mm 1.2mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 399-518
BrandRS PRO
SGD3.58
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. 244-0797
Mfr. Part No.DR-25-1/8-0-SP
SGD621.05
1 Reel of 50 Metre(s)
Reel(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 50 m Elastomer Yes No DR-25 -
RS Stock No. 219-6484
Mfr. Part No.DR-25-1/8-0-10
SGD13.795
Each
units
3.2mm 1.6mm Black Heat Shrink No 2:1 10 m Elastomer Yes No DR-25 -
RS Stock No. 487-4338
Mfr. Part No.RNF-100-2-1-STK
SGD28.86
Each
units
51mm 25.4mm Brown Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 515-6805
Mfr. Part No.18054
BrandDymo
SGD131.57
Each
units
9mm 1.7mm Yellow Heat Shrink No 3:1 1.5 m Polyolefin Yes - DYMO -
RS Stock No. 894-7893
Mfr. Part No.RNF-100-3/8-0-SP
SGD385.94
1 Reel of 150
Reel(s)
9.5mm 4.8mm 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. 170-6412
Mfr. Part No.RNF-100-3/8-0-STK
SGD6.36
Each
units
9.5mm 4.8mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 811-2729
Mfr. Part No.TE100037445
Brand3M
SGD21.49
Each
units
19mm 6mm Black Heat Shrink Yes 4:1 1 m Polyolefin Yes - HDT-A -
RS Stock No. 234-4986
Mfr. Part No.RNF 3000-12/4-0
SGD13.68
Each
units
12mm 4mm Black Heat Shrink No 3:1 1.2 m Polyolefin No No RNF-3000 -
RS Stock No. 252-7686
Mfr. Part No.VFRS-1/8-0
SGD2.649
Each
units
3.4mm 1.6mm Black Heat Shrink No 2:1 10 m Polyolefin Yes No VERSAFIT -
RS Stock No. 433-0692
Mfr. Part No.RW-175-3/64-0-RSU-STK
SGD6.88
Each
units
1.2mm 0.6mm Black Heat Shrink No 2:1 1.2 m PVDF Yes No RW-175 -
RS Stock No. 396-4632
Mfr. Part No.RNF-100-3/8-0-FSP
SGD284.35
1 Reel of 121
Reel(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 121 m Polyolefin Yes No RNF-100 -
RS Stock No. 234-5080
Mfr. Part No.RNF 3000-24/8-9
SGD24.58
Each
units
24mm 8mm White Heat Shrink No 3:1 1.2 m Polyolefin Yes No RNF-3000 UL
RS Stock No. 398-183
BrandRS PRO
SGD5.002
Each (In a Pack of 5)
units
6.4mm 3.2mm Black 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. 666-852
BrandRS PRO
SGD24.69
1 Box of 25
Box(es)
1.6mm 0.8mm Black Heat Shrink No 2:1 25 m Polyolefin Yes No - RoHS Compliant, UL
RS Stock No. 157-3880
Mfr. Part No.DWTC-16/4-X-STK
SGD29.35
Each
units
16mm 4mm Clear Heat Shrink Yes 4:1 1.2 m Polyolefin No No DWTC -