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. 157-3846
Mfr. Part No.DWTC-4/1-X-STK
PHP378.11
Each
units
4mm 1mm Clear Heat Shrink Yes 4:1 1.2m Polyolefin No No DWTC -
RS Stock No. 654-4045
Mfr. Part No.RW-200-E-1/8-0
PHP7,321.59
1 Reel of 10 Metre(s)
Reel(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 10m Viton Cross Linked Fluoroelastomer No No RW-200 -
RS Stock No. 113-2596
Mfr. Part No.RNF 100 KIT
PHP6,043.16
Each
units
2.4 mm, 3.2 mm, 4.8 mm, 6.4 mm, 9.5 mm Assortiment Black Heat Shrink No 2:1 Longueurs assorties Polyolefin Yes No RNF-100 -
RS Stock No. 874-1150
Mfr. Part No.V2-1.5-0-SP-SM
PHP2,753.36
1 Reel of 200
Reel(s)
2.1mm 0.75mm Black Heat Shrink No 2:1 200m Polyolefin Yes Yes VERSAFIT V2 ASTM D2671, CSA LR31929, RoHS Compliant, UL Recognized E35586
RS Stock No. 252-7737
Mfr. Part No.VFRS-3/4-0
PHP887.00
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. 487-4451
Mfr. Part No.RNF-100-COL-KIT2
PHP6,594.54
Each
units
25.4mm 12.7mm - Heat Shrink No 2:1 Longueurs assorties Cross Linked Polyolefin Yes No RNF-100 -
RS Stock No. 397-821
Mfr. Part No.SCL-1/4-0
PHP104.774
Each (In a Pack of 5)
units
6.4mm 2mm Black Heat Shrink No 3:1 300mm Polyolefin No No SCL -
RS Stock No. 654-4095
Mfr. Part No.RW-200-E-3/4-0
PHP7,737.38
1 Reel of 5 Metre(s)
Reel(s)
19.1mm 9.5mm Black Heat Shrink No 2:1 5m Viton Cross Linked Fluoroelastomer No No RW-200 -
RS Stock No. 177-9353
Mfr. Part No.RNF 3000-18/6-9
PHP736.88
Each
units
18mm 6mm White Heat Shrink No 3:1 1.2m Polyolefin Yes No RNF-3000 UL
RS Stock No. 277-8042
Mfr. Part No.ZHTM-3/1.5-0
PHP634.30
Each
units
3mm 1.5mm Black Heat Shrink No 2:1 1.2m Polyolefin No No ZHTM -
RS Stock No. 396-4632
Mfr. Part No.RNF-100-3/8-0-FSP
PHP9,338.78
1 Reel of 121
Reel(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 121m Polyolefin Yes No RNF-100 -
RS Stock No. 219-6529
Mfr. Part No.DR-25-1/2-0-7
PHP4,685.96
1 Reel of 7 Metre(s)
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 7m Elastomer Yes No DR-25 -
RS Stock No. 244-0832
Mfr. Part No.DR-25-1/2-0-SP
PHP9,942.06
1 Reel of 30 Metre(s)
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 30m Elastomer Yes No DR-25 -
RS Stock No. 219-6484
Mfr. Part No.DR-25-1/8-0-10
PHP4,571.38
1 Reel of 10 Metre(s)
Reel(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 10m Elastomer Yes No DR-25 -
RS Stock No. 894-7893
Mfr. Part No.RNF-100-3/8-0-SP
PHP12,522.00
1 Reel of 150
Reel(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 150m 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. 170-6412
Mfr. Part No.RNF-100-3/8-0-STK
PHP136.00
Each
units
9.5mm 4.8mm Black Heat Shrink No 2:1 1.2m Polyolefin No No RNF-100 -
RS Stock No. 244-0797
Mfr. Part No.DR-25-1/8-0-SP
PHP17,131.26
1 Reel of 50 Metre(s)
Reel(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 50m Elastomer Yes No DR-25 -
RS Stock No. 252-7664
Mfr. Part No.VFRS-1/16-0
PHP991.93
1 Reel of 10 Metre(s)
Reel(s)
1.8mm 0.8mm Black Heat Shrink No 2:1 10m Polyolefin Yes No VERSAFIT -
RS Stock No. 873-8703
Mfr. Part No.ZH2-3.0-0-SP-SM
PHP6,593.75
1 Reel of 200 Metre(s)
Reel(s)
3.6mm 1.5mm Black Heat Shrink No 2:1 200m Polyolefin Yes Yes ZH2 ASTM D2671, CSA LR31929 VW-1, Raychem RW-3036, UL 224, UL Recognized E35586 VW-1
RS Stock No. 484-8941
Mfr. Part No.HFT5000-50/25.0
PHP1,421.48
1 Bag of 5
Bag(s)
50mm 25mm Black Heat Shrink No 2:1 5m PE/PET Yes Yes HFT5000 -