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. 700-4545
BrandRS PRO
SGD24.85
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. 700-4532
BrandRS PRO
SGD2.396
Each
units
3mm 1mm Black Heat Shrink No 3:1 10 m Polyolefin Yes No - UL
RS Stock No. 417-7249
BrandRS PRO
SGD17.57
1 Bag of 20
Bag(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 300 mm 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. 666-874
BrandRS PRO
SGD42.08
1 Box of 20
Box(es)
3.2mm 1.6mm Black Heat Shrink No 2:1 20 m Polyolefin Yes No - UL
RS Stock No. 398-206
BrandRS PRO
SGD3.146
Each (In a Pack of 5)
units
3.2mm 1.6mm 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. 700-4535
BrandRS PRO
SGD25.16
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm Black Heat Shrink No 3:1 7 m Polyolefin Yes No - UL
RS Stock No. 700-4539
BrandRS PRO
SGD23.55
1 Reel of 5 Metre(s)
Reel(s)
9mm 3mm Black Heat Shrink No 3:1 5 m Polyolefin Yes No - UL
RS Stock No. 417-7277
BrandRS PRO
SGD24.05
1 Bag of 20
Bag(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 300 mm 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. 666-903
BrandRS PRO
SGD51.40
1 Box of 12
Box(es)
9.5mm 4.8mm Black Heat Shrink No 2:1 12 m Polyolefin Yes No - RoHS Compliant, UL
RS Stock No. 398-177
BrandRS PRO
SGD4.33
Each
units
9.5mm 4.8mm 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. 700-4469
BrandRS PRO
SGD21.96
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. 700-4548
BrandRS PRO
SGD21.96
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm Black Heat Shrink No 3:1 4 m Polyolefin Yes No - UL
RS Stock No. 177-9375
Mfr. Part No.RNF 3000-18/6-X
SGD14.73
Each
units
18mm 6mm Clear Heat Shrink No 3:1 1.2 m Polyolefin No No RNF-3000 UL
RS Stock No. 484-8941
Mfr. Part No.HFT5000-50/25.0
SGD44.15
1 Bag of 5
Bag(s)
50mm 25mm Black Heat Shrink No 2:1 5 m PE/PET Yes Yes HFT5000 -
RS Stock No. 389-662
BrandRS PRO
SGD64.10
1 Reel of 15 Metre(s)
Reel(s)
6.4mm 3.2mm Black Heat Shrink No 2:1 15 m Polyolefin No No - ELV, RoHS Compliant, SFP (R4-0580)
RS Stock No. 700-4456
BrandRS PRO
SGD25.16
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm Clear Heat Shrink No 3:1 7 m Polyolefin No No - UL
RS Stock No. 157-3903
Mfr. Part No.CGAT-24/8-0
SGD20.04
Each
units
24mm 8mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No CGAT E85381
RS Stock No. 450-543
Mfr. Part No.323-20400
SGD31.36
Each
units
40mm 12mm Black Heat Shrink Yes 4:1 1 m Cross Linked Polyolefin - - MU47 -
RS Stock No. 170-6383
Mfr. Part No.RNF-100-1/8-0-STK
SGD3.38
Each
units
3.2mm 1.6mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 811-2704
Mfr. Part No.MDTA32/7
Brand3M
SGD20.10
Each
units
32mm 7mm Black Heat Shrink Yes 4.5:1 1 m Polyolefin Yes - MDT-A -
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