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. 839-5466
Mfr. Part No.F2213/32 BK103
BrandAlpha Wire
MYR132.59
1 Box of 25
Box(es)
2.3mm 1.17mm Black Heat Shrink No 2:1 1.2m Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5463
Mfr. Part No.F2213/32 BK061
BrandAlpha Wire
MYR2.198
Each
units
2.3mm 1.17mm Black Heat Shrink No 2:1 152mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4755
Mfr. Part No.F2213/32 BK002
BrandAlpha Wire
MYR739.45
1 Reel of 152 Metre(s)
Reel(s)
2.3mm 1mm Black Heat Shrink No 2:1 152m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 821-4718
Mfr. Part No.FKIT221C MC032
BrandAlpha Wire
MYR366.46
1 Kit
Kit(s)
Assortiment Assortiment Assorted Heat Shrink - 2:1 Assortiment Polyolefin - - FIT-KIT -
RS Stock No. 821-4890
Mfr. Part No.F2213/4 BK003
BrandAlpha Wire
MYR841.35
1 Reel of 76 Metre(s)
Reel(s)
19mm 10mm Black Heat Shrink No 2:1 76m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5508
Mfr. Part No.F2213/4 BK067
BrandAlpha Wire
MYR6.212
Each (In a Pack of 12)
units
19mm 9.53mm Black Heat Shrink No 2:1 152mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5501
Mfr. Part No.F2213/4 BK105
BrandAlpha Wire
MYR87.47
1 Box of 5
Box(es)
19mm 9.53mm Black Heat Shrink No 2:1 1.2m Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5460
Mfr. Part No.F2211/8 BK062
BrandAlpha Wire
MYR2.665
Each
units
3.1mm 1.57mm Black Heat Shrink No 2:1 152mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4875
Mfr. Part No.F2211/2 BK016
BrandAlpha Wire
MYR493.88
1 Reel of 46 Metre(s)
Reel(s)
12.7mm 6mm Black Heat Shrink No 2:1 45m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 821-4771
Mfr. Part No.F2211/8 BK002
BrandAlpha Wire
MYR797.49
1 Reel of 152 Metre(s)
Reel(s)
3.1mm 2mm Black Heat Shrink No 2:1 152m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5498
Mfr. Part No.F2211/2 BK105
BrandAlpha Wire
MYR64.71
1 Box of 5
Box(es)
12.7mm 6.35mm Black Heat Shrink No 2:1 1.2m Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5494
Mfr. Part No.F2211/2 BK066
BrandAlpha Wire
MYR5.326
Each (In a Pack of 14)
units
12.7mm 6.35mm Black Heat Shrink No 2:1 152mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5479
Mfr. Part No.F2211/8 BK103
BrandAlpha Wire
MYR140.49
1 Box of 25
Box(es)
3.1mm 1.57mm Black Heat Shrink No 2:1 152mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 817-9072
Mfr. Part No.F221L1/2 BK004
BrandAlpha Wire
MYR1,595.53
1 Reel of 61 Metre(s)
Reel(s)
12.7mm 6mm Black Heat Shrink - 2:1 60.9m LSZH Polyolefin - - FIT-221L -
RS Stock No. 821-4878
Mfr. Part No.F2211/2 CL016
BrandAlpha Wire
MYR456.19
1 Reel of 46 Metre(s)
Reel(s)
12.7mm 6mm Clear Heat Shrink No 2:1 45m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 113-1953
Mfr. Part No.F6212 BK072
BrandAlpha Wire
MYR241.47
Each
units
50.8mm 9.5mm Black Heat Shrink Yes 6:1 152mm Polyolefin - - FIT-621 -
RS Stock No. 821-4853
Mfr. Part No.F2213/8 CL004
BrandAlpha Wire
MYR549.82
1 Reel of 61 Metre(s)
Reel(s)
9.5mm 5mm Clear Heat Shrink No 2:1 60m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5482
Mfr. Part No.F2213/8 BK065
BrandAlpha Wire
MYR4.659
Each
units
9.5mm 4.75mm Black Heat Shrink No 2:1 152mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4856
Mfr. Part No.F2213/8 BL004
BrandAlpha Wire
MYR595.03
1 Reel of 61 Metre(s)
Reel(s)
9.5mm 5mm Blue Heat Shrink No 2:1 60m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 821-4929
Mfr. Part No.F2211IN BL003
BrandAlpha Wire
MYR1,438.65
1 Reel of 76 Metre(s)
Reel(s)
25.4mm 13mm Blue Heat Shrink No 2:1 76m Polyolefin - No FIT-221 CSA, UL