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. 700-4453
BrandRS PRO
$22.49
1 Reel of 10 Metre(s)
Reel(s)
3mm 1mm Clear Heat Shrink No 3:1 10 m Polyolefin No No - UL
RS Stock No. 700-4557
BrandRS PRO
$19.77
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm White Heat Shrink No 3:1 7 m Polyolefin Yes No - UL
RS Stock No. 170-6406
Mfr. Part No.RNF-100-1/4-0-STK
$9.85
Each
units
6.4mm 3.2mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 483-4138
BrandRS PRO
$5.576
Each (In a Pack of 5)
units
3.2mm 1.6mm 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. 364-1272
Mfr. Part No.RNF-100-1-5-STK
$14.24
Each
units
25.4mm 12.7mm Green Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 170-6428
Mfr. Part No.RNF-100-1/2-0-STK
$8.45
Each
units
12.7mm 6.4mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 170-6664
Mfr. Part No.RNF-100-1-X-STK
$15.20
Each
units
25.4mm 12.7mm Clear Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 811-2716
Mfr. Part No.MDTA50/18
Brand3M
$35.31
Each
units
50mm 18mm Black Heat Shrink Yes 4.5:1 1 m Polyolefin Yes - MDT-A -
RS Stock No. 288-5235
Mfr. Part No.RT-375-1/2-X-STK
$11.79
Each
units
12.7mm 6.4mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No RT-375 -
RS Stock No. 239-1516
Mfr. Part No.S1125-KIT-1
$138.73
Each
units
- - - - No - - - - No S1125 -
RS Stock No. 700-4545
BrandRS PRO
$26.50
1 Reel of 3 Metre(s)
Reel(s)
24mm 8mm Black Heat Shrink No 3:1 3 m Polyolefin Yes No - UL
RS Stock No. 170-6591
Mfr. Part No.RNF-100-1/8-X-STK
$4.71
Each
units
3.2mm 1.6mm Clear Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 894-7871
Mfr. Part No.RNF-100-3/64-0-SP
$805.56
1 Reel of 600
Reel(s)
1.2mm 0.6mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes 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. 241-5410
BrandRS PRO
$39.17
Each
units
126mm 47mm Black Heat Shrink Yes 3:1 300 mm PEX Yes - - ICEA, NEMA, RoHS Compliant
RS Stock No. 397-809
Mfr. Part No.SCL-1/8-0
$2.336
Each (In a Pack of 5)
units
3.2mm 0.6mm Black Heat Shrink No 2.5:1 300 mm Polyolefin No No SCL -
RS Stock No. 700-4469
BrandRS PRO
$19.28
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. 170-6563
Mfr. Part No.RNF-100-3/64-X-STK
$3.77
Each
units
1.2mm 0.6mm Clear Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 341-6032
Mfr. Part No.RNF-100-1-2-STK
$15.20
Each
units
25.4mm 12.7mm Red Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 700-4462
BrandRS PRO
$22.71
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm Clear Heat Shrink No 3:1 3 m Polyolefin No No - UL
RS Stock No. 170-6355
Mfr. Part No.RNF-100-3/64-0-STK
$2.79
Each
units
1.2mm 0.6mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
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