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. 894-7941
Mfr. Part No.RNF-100-3/4-BK-SP
MYR1,327.10
1 Reel of 76
Reel(s)
19.1mm 9.5mm Black Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 AMS-DTL-23053/5, CSA, E35586, LR31929, MIL-DTL-23053/5, MIL-I-23053/5, RoHS Complaint, UL Recognisation, VDE 0341 Pt 9005
RS Stock No. 252-7737
Mfr. Part No.VFRS-3/4-0
MYR56.52
1 Reel of 5 Metre(s)
Reel(s)
19mm 9.5mm Black Heat Shrink No 2:1 5m Polyolefin Yes No VERSAFIT -
RS Stock No. 113-2439
Mfr. Part No.RNF-100-3/4-4-STK
MYR46.05
Each
units
19mm 9.5mm Yellow Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 -
RS Stock No. 894-7881
Mfr. Part No.RNF-100-3/16-0-SP
MYR1,420.02
1 Reel of 300
Reel(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2m Polyolefin No No RNF-100 AMS-DTL-23053/5, CSA, E35586, LR31929, MIL-DTL-23053/5, MIL-I-23053/5, RoHS Complaint, UL Recognisation, VDE 0341 Pt 9005
RS Stock No. 170-6399
Mfr. Part No.RNF-100-3/16-0-STK
MYR9.38
Each
units
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2m Polyolefin No No RNF-100 -
RS Stock No. 288-5184
Mfr. Part No.RT-375-1/8-X-STK
MYR14.64
Each
units
3.2mm 1.6mm Clear Heat Shrink No 2:1 1.2m Fluoropolymer Yes No RT-375 -
RS Stock No. 244-0826
Mfr. Part No.DR-25-3/8-0-SP
MYR1,549.39
1 Reel of 50 Metre(s)
Reel(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 50m Elastomer Yes No DR-25 -
RS Stock No. 219-6513
Mfr. Part No.DR-25-3/8-0-10
MYR539.75
1 Reel of 10 Metre(s)
Reel(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 10m Elastomer Yes No DR-25 -
RS Stock No. 501-4199
Mfr. Part No.308-10600 HIS-A-6/2-PO-X-BK (5)
MYR228.86
1 Reel of 5 Metre(s)
Reel(s)
6mm 2mm Black Heat Shrink Yes 3:1 5m Cross Linked Polyolefin Yes - HIS-A -
RS Stock No. 316-1669
Mfr. Part No.ATUM-24/6-0
MYR88.48
Each
units
24mm 6mm Black Heat Shrink Yes 4:1 1.2m Polyolefin Yes No ATUM -
RS Stock No. 894-7871
Mfr. Part No.RNF-100-3/64-0-SP
MYR2,292.00
1 Reel of 600
Reel(s)
1.2mm 0.6mm Black Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 AMS-DTL-23053/5, CSA, E35586, LR31929, MIL-DTL-23053/5, MIL-I-23053/5, RoHS Complaint, UL Recognisation, VDE 0341 Pt 9005
RS Stock No. 618-9402
Mfr. Part No.HFT5000-20/10-0
MYR201.41
1 Bag of 10 Metre(s)
Bag(s)
20mm 10mm Black Heat Shrink No 2:1 10m PE/PET Yes Yes HFT5000 -
RS Stock No. 808-7793
Mfr. Part No.RMW-16/5-1200/ADH-0
MYR28.79
Each
units
16mm 5mm Black Heat Shrink Yes 3:1 1.2m Polyolefin No No RMW UL
RS Stock No. 170-6355
Mfr. Part No.RNF-100-3/64-0-STK
MYR8.06
Each
units
1.2mm 0.6mm Black Heat Shrink No 2:1 1.2m Polyolefin No No RNF-100 -
RS Stock No. 170-6406
Mfr. Part No.RNF-100-1/4-0-STK
MYR8.31
Each
units
6.4mm 3.2mm Black Heat Shrink No 2:1 1.2m Polyolefin No No RNF-100 -
RS Stock No. 515-6782
Mfr. Part No.18057
BrandDymo
MYR235.97
Each
units
19mm 4.6mm White Heat Shrink No 3:1 1.5m Polyolefin Yes - DYMO -
RS Stock No. 277-7897
Mfr. Part No.RW-175-1/16-X
MYR19.83
Each
units
1.6mm 0.8mm Clear Heat Shrink No 2:1 1.2m PVDF Yes No KYNAR -
RS Stock No. 396-4626
Mfr. Part No.RNF-100-1/4-0-SP
MYR485.55
1 Reel of 75
Reel(s)
6.4mm 3.2mm Black Heat Shrink No 2:1 75m Polyolefin No No RNF-100 -
RS Stock No. 344-0653
Mfr. Part No.HTAT-24/6-0-STK
MYR96.44
Each
units
24mm 6mm Black Heat Shrink Yes 4:1 1.2m Cross Linked Polyolefin Yes No HTAT -
RS Stock No. 277-8070
Mfr. Part No.ZHTM-8/4-0
MYR54.57
Each
units
8mm 4mm Black Heat Shrink No 2:1 1.2m Polyolefin No No ZHTM -
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