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. 234-4936
Mfr. Part No.RNF 3000-6/2-2
HK$47.13
Each
units
6mm 2mm Red Heat Shrink No 3:1 1.2 m Polyolefin Yes No RNF-3000 UL
RS Stock No. 666-874
BrandRS PRO
HK$241.38
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. 288-5241
Mfr. Part No.RT-375-3/4-X-STK
HK$81.61
Each
units
19.1mm 9.5mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No RT-375 -
RS Stock No. 252-7743
Mfr. Part No.VFRS-1-0
HK$224.14
1 Reel of 3 Metre(s)
Reel(s)
25.5mm 12.7mm Black Heat Shrink No 2:1 3 m Polyolefin Yes No VERSAFIT -
RS Stock No. 252-7709
Mfr. Part No.VFRS-1/4-0
HK$149.43
1 Reel of 8 Metre(s)
Reel(s)
7.1mm 3.2mm Black Heat Shrink No 2:1 8 m Polyolefin Yes No VERSAFIT -
RS Stock No. 399-524
BrandRS PRO
HK$25.864
Each (In a Pack of 5)
units
6.4mm 3.2mm Yellow 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. 417-7249
BrandRS PRO
HK$100.67
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. 700-4567
BrandRS PRO
HK$125.86
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm White Heat Shrink No 3:1 3 m Polyolefin Yes No - UL
RS Stock No. 170-6686
Mfr. Part No.CGPT-R-2.4-0
HK$17.874
Each
units
2.4mm 1.2mm Black Heat Shrink No 2:1 10 m Polyolefin Yes Yes CGPT -
RS Stock No. 219-6490
Mfr. Part No.DR-25-3/16-0-10
HK$91.28
Each
units
4.8mm 2.4mm Black Heat Shrink No 2:1 10 m Elastomer Yes No DR-25 -
RS Stock No. 392-264
BrandRS PRO
HK$25.864
Each (In a Pack of 5)
units
6.4mm 3.2mm White 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. 654-4102
Mfr. Part No.RW-200-E-1-0-SP
HK$2,345.20
1 Reel of 3 Metre(s)
Reel(s)
25.4mm 12.7mm Black Heat Shrink No 2:1 3 m Viton Cross Linked Fluoroelastomer No No RW-200 -
RS Stock No. 170-6311
Mfr. Part No.TFER-1/2-X
HK$301.84
Each
units
12.7mm 3.7mm Clear Heat Shrink No 3.2:1 1.2 m Teflon Fluoropolymer Yes No TFER ASTM D 876-00, ASTM D2671, Class 5, Def. Stan. 59-97 Type 5B, IEC 60243, Military AMS-DTL-23053/12 Class 3, Raychem RW-2054
RS Stock No. 450-547
Mfr. Part No.323-20300 MA47-30/8-PO-X-BK (20)
HK$173.13
Each
units
30mm 8mm Black Heat Shrink Yes 4:1 1 m Cross Linked Polyolefin - - MU47 -
RS Stock No. 865-9903
Mfr. Part No.LSTT-1.6-0-SP
HK$3,401.40
1 Reel of 600 Metre(s)
Reel(s)
1.6mm 0.8mm Black Heat Shrink No 2:1 600 m Polyolefin No No LSTT -
RS Stock No. 487-4221
Mfr. Part No.LBC-TYC-BS7671
HK$131.90
1 Bag of 10
Bag(s)
- - Black - No - - Vinyl Yes No - -
RS Stock No. 244-0804
Mfr. Part No.DR-25-3/16-0-SP
HK$2,954.50
1 Reel of 50 Metre(s)
Reel(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 50 m Elastomer Yes No DR-25 -
RS Stock No. 450-509
Mfr. Part No.901-10202
HK$174.83
Each
units
30mm 8mm Black Heat Shrink - 4:1 1 m Cross Linked Polyolefin - - MU47 -
RS Stock No. 398-436
BrandRS PRO
HK$47.82
Each
units
4.8mm 2.4mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 177-9375
Mfr. Part No.RNF 3000-18/6-X
HK$122.39
Each
units
18mm 6mm Clear Heat Shrink No 3:1 1.2 m Polyolefin No No RNF-3000 UL
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