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. 277-8020
Mfr. Part No.XFFR-11X4
$50.79
Each
units
27.9mm 9.52mm Black Heat Shrink No 3:1 1.2m Polyolefin Yes Yes XFFR -
RS Stock No. 364-1266
Mfr. Part No.RNF-100-3/4-5-STK
$12.28
Each
units
19mm 9.5mm Green Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 -
RS Stock No. 808-7800
Mfr. Part No.RMW-50/16-1200/ADH-0
$25.33
Each
units
50mm 16mm Black Heat Shrink Yes 3:1 1.2m Polyolefin No No RMW UL
RS Stock No. 170-4551
Mfr. Part No.CGPT-9.5/4.8-X-STK
$6.33
Each
units
9.5mm 4.8mm Clear Heat Shrink No 2:1 1.2m Polyolefin Yes No CGPT CSA, UL
RS Stock No. 341-5900
Mfr. Part No.RNF-100-1/8-2-STK
$5.25
Each
units
3.2mm 1.6mm Red Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 -
RS Stock No. 113-2388
Mfr. Part No.RNF-100-3/16-4-STK
$3.03
Each
units
4.8mm 2.4mm Yellow Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 -
RS Stock No. 866-0010
Mfr. Part No.LSTT-12.7-6-SP
$471.13
1 Reel of 150 Metre(s)
Reel(s)
12.7mm 6.4mm Blue Heat Shrink No 2:1 150m Polyolefin No No LSTT -
RS Stock No. 914-6877
Mfr. Part No.309-31903 TF24-19.1/9.5-PO-X-CL (50)
$415.28
1 Reel of 50 Metre(s)
Reel(s)
19.1mm 9.5mm Clear Heat Shrink - 2:1 50m Polyolefin - Yes TF24 DEF STAN, SAE, VG
RS Stock No. 170-6620
Mfr. Part No.RNF-100-1/4-X-STK
$4.75
Each
units
6.4mm 3.2mm Clear Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 -
RS Stock No. 316-1580
Mfr. Part No.ATUM-12/4-0
$23.79
Each
units
12mm 4mm Black Heat Shrink Yes 3:1 1.2m Polyolefin Yes No ATUM -
RS Stock No. 170-6355
Mfr. Part No.RNF-100-3/64-0-STK
$2.93
Each
units
1.2mm 0.6mm Black Heat Shrink No 2:1 1.2m Polyolefin No No RNF-100 -
RS Stock No. 288-5083
Mfr. Part No.SRFR-2.9/1.7-8-1m
$59.81
Each
units
2.9mm 1.7mm Grey Heat Shrink No 1.7:1 1m Silicone Rubber Yes No SRFR -
RS Stock No. 219-6484
Mfr. Part No.DR-25-1/8-0-10
$15.214
Each
units
3.2mm 1.6mm Black Heat Shrink No 2:1 10m Elastomer Yes No DR-25 -
RS Stock No. 808-7844
Mfr. Part No.RHW-16/4-1200/ADH-0
$17.61
Each
units
16mm 4mm Black Heat Shrink Yes 4:1 1.2m Polyolefin No Yes RHW UL
RS Stock No. 316-1114
Mfr. Part No.HRSR-300FR-10
$72.31
Each
units
76.2mm 19.05mm Black Heat Shrink No 5.6:1 254mm Polyolefin Yes No HRSR -
RS Stock No. 251-7651
Mfr. Part No.8443-2
Brand3M
$16.20
Each
units
17.3mm 2.8mm Grey Cold Shrink - - 39.6mm Silicone Rubber Yes - 8440 -
RS Stock No. 244-0797
Mfr. Part No.DR-25-1/8-0-SP
$735.80
1 Reel of 50 Metre(s)
Reel(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 50m Elastomer Yes No DR-25 -
RS Stock No. 170-6507
Mfr. Part No.RNF-100-1/4-9-STK
$6.60
Each
units
6.4mm 3.2mm White Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 -
RS Stock No. 333-6368
Mfr. Part No.202A142-25-0
$17.11
Each
units
- 17.8mm Black Heat Shrink - - 66.8mm - - - 202A1 -
RS Stock No. 277-7954
Mfr. Part No.KYNAR-1/2-X
$39.70
Each
units
12.7mm 6.4mm Clear Heat Shrink No 2:1 1.2m PVDF Yes No KYNAR -
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