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.
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
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. 277-8042
Mfr. Part No.ZHTM-3/1.5-0
3mm 1.5mm Black Heat Shrink No 2:1 1.2m Polyolefin No No ZHTM -
RS Stock No. 914-6899
Mfr. Part No.309-40953 TF24-9.5/4.8-PO-X-CL (50)
1 Reel of 50 Metre(s)
9.5mm 4.8mm Clear Heat Shrink - 2:1 50m Polyolefin - Yes TF24 DEF STAN, SAE, VG
RS Stock No. 219-6535
Mfr. Part No.DR-25-3/4-0-5
1 Reel of 5 Metre(s)
19mm 9.5mm Black Heat Shrink No 2:1 5m Elastomer Yes No DR-25 -
RS Stock No. 252-7692
Mfr. Part No.VFRS-3/16-0
1 Reel of 9 Metre(s)
5.21mm 2.4mm Black Heat Shrink No 2:1 9m Polyolefin Yes No VERSAFIT -
RS Stock No. 914-6877
Mfr. Part No.309-31903 TF24-19.1/9.5-PO-X-CL (50)
1 Reel of 50 Metre(s)
19.1mm 9.5mm Clear Heat Shrink - 2:1 50m Polyolefin - Yes TF24 DEF STAN, SAE, VG
RS Stock No. 873-9153
Mfr. Part No.CGPT-51/26-X-SP
1 Reel of 30
51mm 26mm Clear Heat Shrink No 2:1 30m Polyolefin No Yes CGPT ASTM D2671, CSA LR31929, IEC 243, Raychem RW-2059, UL Recognized E35586
RS Stock No. 914-6903
Mfr. Part No.309-50483 TF24-4.8/2.4-PO-X-CL (60)
1 Reel of 60 Metre(s)
4.8mm 2.4mm Clear Heat Shrink - 2:1 60m Polyolefin - Yes TF24 DEF STAN, SAE, VG
RS Stock No. 811-2726
Mfr. Part No.HDTA38/12
38mm 12mm Black Heat Shrink Yes 4:1 1m Polyolefin Yes - HDT-A -
RS Stock No. 170-6282
Mfr. Part No.TFER-1/8-X
3.2mm 1mm Clear Heat Shrink No 3.2:1 1.2m 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. 170-6759
Mfr. Part No.CGPT-R-25.4-0
1 Reel of 3 Metre(s)
25.4mm 12.7mm Black Heat Shrink No 2:1 3m Polyolefin Yes Yes CGPT -
RS Stock No. 364-1216
Mfr. Part No.RNF-100-3/16-5-STK
4.8mm 2.4mm Green Heat Shrink No 2:1 1.2m Polyolefin Yes No RNF-100 -
RS Stock No. 308-109
Mfr. Part No.804140
30.1mm 13.9mm Black Cold Shrink - - 228.6mm EPDM - - - -
RS Stock No. 808-7856
Mfr. Part No.RHW-34/8-1200/ADH-0
34mm 8mm Black Heat Shrink Yes 4:1 1.2m Polyolefin No Yes RHW UL
RS Stock No. 832-6969
Mfr. Part No.318-30450 TA32-4.5/1.5-PO-X-BK (250)
Each (In a Pack of 5)
4.5mm 1.5mm Black Heat Shrink Yes 3:1 1.2m Polyolefin Yes - TA32 -
RS Stock No. 484-8935
Mfr. Part No.HFT5000-40/20-0-RSU-5M
1 Bag of 5
40mm 20mm Black Heat Shrink No 2:1 5m PE/PET Yes Yes HFT5000 -
RS Stock No. 288-5162
Mfr. Part No.RT-375-1/16-X-STK
1.6mm 0.8mm Clear Heat Shrink No 2:1 1.2m Fluoropolymer Yes No RT-375 -
RS Stock No. 821-4951
Mfr. Part No.F2213IN CL005
BrandAlpha Wire
1 Reel of 30 Metre(s)
76.2mm 38mm Clear Heat Shrink No 2:1 30m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 874-0977
Mfr. Part No.RBK-ILS-125-NR3-0-65MM
Each (In a Pack of 100)
11mm 2.4mm Black Heat Shrink Yes 4:1 65mm Polyolefin Yes Yes RBK-ILS-125 ELV, RoHS Compliant
RS Stock No. 177-9218
Mfr. Part No.RNF 3000-3/1-4-2
3mm 1mm Yellow Heat Shrink No 3:1 1.2m Polyolefin Yes No RNF-3000 UL
RS Stock No. 618-9402
Mfr. Part No.HFT5000-20/10-0
1 Bag of 10 Metre(s)
20mm 10mm Black Heat Shrink No 2:1 10m PE/PET Yes Yes HFT5000 -
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