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. 821-4705
Mfr. Part No.F221MS/2 BK032
BrandAlpha Wire
PHP1,949.73
Each
units
6.35 mm, 9.53 mm, 12.7 mm, 19.05 mm 3 mm, 5 mm, 6 mm, 10 mm Black Heat Shrink - 2:1 152 mm Polyolefin - - FIT-221 -
RS Stock No. 839-5498
Mfr. Part No.F2211/2 BK105
BrandAlpha Wire
PHP957.20
1 Box of 5
Box(es)
12.7mm 6.35mm Black Heat Shrink No 2:1 1.2 m Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5494
Mfr. Part No.F2211/2 BK066
BrandAlpha Wire
PHP74.647
Each (In a Pack of 14)
units
12.7mm 6.35mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4875
Mfr. Part No.F2211/2 BK016
BrandAlpha Wire
PHP5,466.14
1 Reel of 46 Metre(s)
Reel(s)
12.7mm 6mm Black Heat Shrink No 2:1 45 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 821-4727
Mfr. Part No.F2213/64 BK001
BrandAlpha Wire
PHP13,198.47
1 Reel of 305 Metre(s)
Reel(s)
1.1mm 1mm Black Heat Shrink No 2:1 305 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5466
Mfr. Part No.F2213/32 BK103
BrandAlpha Wire
PHP1,823.61
1 Box of 25
Box(es)
2.3mm 1.17mm Black Heat Shrink No 2:1 1.2 m Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4945
Mfr. Part No.F2212IN BK015
BrandAlpha Wire
PHP21,668.71
1 Reel of 38
Reel(s)
50.8mm 25mm Black Heat Shrink No 2:1 38 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 821-4828
Mfr. Part No.F2211/4 BK003
BrandAlpha Wire
PHP7,997.68
1 Reel of 76 Metre(s)
Reel(s)
6.3mm 3mm Black Heat Shrink No 2:1 76 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5485
Mfr. Part No.F2211/4 BK064
BrandAlpha Wire
PHP51.426
Each
units
6.3mm 3.18mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4989
Mfr. Part No.FFLEX5 SL008
BrandAlpha Wire
PHP35,554.95
1 Reel of 8 Metre(s)
Reel(s)
- - Grey - - - 8 m Silicone Rubber - - FIT-FLEX -
RS Stock No. 821-4825
Mfr. Part No.F2213/16 YL002
BrandAlpha Wire
PHP10,862.73
1 Reel of 152 Metre(s)
Reel(s)
4.7mm 2mm Yellow Heat Shrink No 2:1 152 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5488
Mfr. Part No.F2211/4 BK103
BrandAlpha Wire
PHP2,955.54
1 Box of 25
Box(es)
6.3mm 3.18mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5523
Mfr. Part No.F2212IN BK105
BrandAlpha Wire
PHP3,317.00
1 Box of 5
Box(es)
50.8mm 25.4mm Black Heat Shrink No 2:1 - Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5450
Mfr. Part No.F2211/16 BK060
BrandAlpha Wire
PHP28.396
Each
units
1.6mm 0.79mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4941
Mfr. Part No.F22111/2 CL015
BrandAlpha Wire
PHP13,809.47
1 Reel of 38 Metre(s)
Reel(s)
38.1mm 19mm Clear Heat Shrink No 2:1 38 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5463
Mfr. Part No.F2213/32 BK061
BrandAlpha Wire
PHP33.648
Each
units
2.3mm 1.17mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 821-4730
Mfr. Part No.F2211/16 BK001
BrandAlpha Wire
PHP14,220.00
1 Reel of 305 Metre(s)
Reel(s)
1.6mm 1mm Black Heat Shrink No 2:1 305 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 821-4755
Mfr. Part No.F2213/32 BK002
BrandAlpha Wire
PHP8,515.67
1 Reel of 152 Metre(s)
Reel(s)
2.3mm 1mm Black Heat Shrink No 2:1 152 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 839-5454
Mfr. Part No.F2211/16 BK103
BrandAlpha Wire
PHP1,612.11
1 Box of 25
Box(es)
1.6mm 0.79mm Black Heat Shrink No 2:1 1.2 m Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 839-5520
Mfr. Part No.F2212IN BK072
BrandAlpha Wire
PHP460.08
Each (In a Pack of 3)
units
50.8mm 25.4mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL