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. 268-4969
BrandRS PRO
TWD138.00
1 Bag of 1
Bag(s)
1.6mm 0.8mm Green Heat Shrink No 2:1 1.2 m Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, DEF 59-97 Issue3 Type 8, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant
RS Stock No. 433-0608
Mfr. Part No.ATUM-32/8-2-STK
TWD1,242.00
Each
units
32mm 8mm Red Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 194-6416
Mfr. Part No.339-02549 TFE4-1-PTFE-CL
TWD69,287.00
1 Bag of 25
Bag(s)
25.4mm 7.06mm Clear Heat Shrink - 4:1 1.2 m PTFE - - TFE4 ELV
RS Stock No. 873-9135
Mfr. Part No.CGPT-38/19-X-SP
TWD15,949.00
1 Reel of 60
Reel(s)
38mm 19mm Clear Heat Shrink No 2:1 60 m Polyolefin No Yes CGPT ASTM D2671, CSA LR31929, IEC 243, Raychem RW-2059, UL Recognized E35586
RS Stock No. 874-0970
Mfr. Part No.RBK-ILS-125-NR1-0-50MM
TWD6.20
Each (In a Pack of 100)
units
5.75mm 1.25mm Black Heat Shrink Yes 4:1 50 mm Polyolefin Yes Yes RBK-ILS-125 ELV, RoHS Compliant
RS Stock No. 712-3573
Mfr. Part No.308-34010 HIS-3-BAG-40/13-PO-X-MIX (10)
TWD51.80
Each (In a Bag of 10)
units
40mm 13mm Assorted Heat Shrink - 3:1 200 mm Polyolefin Yes - HIS-3 BAG -
RS Stock No. 208-8579
Mfr. Part No.7TCA017300R0361 HSB500-4
TWD1,059.00
Each
units
12.7mm 6.4mm Yellow Heat Shrink - 2:1 6 m Cross Linked Polyolefin Yes - Shrink-Kon -
RS Stock No. 234-5046
Mfr. Part No.RNF 3000-12/4-4
TWD298.00
Each
units
12mm 4mm Yellow Heat Shrink No 3:1 1.2 m Polyolefin Yes No RNF-3000 UL
RS Stock No. 241-7589
BrandRS PRO
TWD1,032.00
Each
units
40mm 13mm Yellow Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No - AMS-DTL-23053/4 Class 3, RoHS Compliant, UL 224 E75077 CSA C22.2 No.198.1
RS Stock No. 742-2602
Mfr. Part No.770-005A104R
BrandGlenair
TWD953.00
Each
units
30mm 13.5mm Black Heat Shrink Yes - 27 mm Elastomer Yes - Series 77 -
RS Stock No. 188-4934
Mfr. Part No.F60011/4 BK005
BrandAlpha Wire
TWD28,785.00
1 Reel of 30 Metre(s)
Reel(s)
0.857in 0.714in Black Heat Shrink - 2:1 150 ft Chlorinated Polyolefin Yes - FIT–600 -
RS Stock No. 914-6871
Mfr. Part No.309-32543 TF24-25.4/12.7-PO-X-CL (50)
TWD13,190.00
1 Reel of 50 Metre(s)
Reel(s)
25.4mm 12.7mm Clear Heat Shrink - 2:1 50 m Polyolefin - Yes TF24 DEF STAN, SAE, VG
RS Stock No. 821-4733
Mfr. Part No.F2211/16 CL001
BrandAlpha Wire
TWD1,292,657.00
1 Reel of 305 Metre(s)
Reel(s)
1.6mm 1mm Clear Heat Shrink No 2:1 305 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 267-2275
BrandRS PRO
TWD1,023.00
1 Bag of 1
Bag(s)
38.1mm 19.1mm Red Heat Shrink No 2:1 1.2 m Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, DEF 59-97 Issue3 Type 8, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant
RS Stock No. 241-7523
BrandRS PRO
TWD361.00
Each
units
19mm 6mm White Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No - AMS-DTL-23053/4 Class 3, RoHS Compliant, UL 224 E75077 CSA C22.2 No.198.1
RS Stock No. 811-2741
Mfr. Part No.8428-6
Brand3M
TWD809.00
Each
units
49.3mm 24mm Black Cold Shrink - - 152 mm Silicone Rubber - - 8420 -
RS Stock No. 179-3277
Mfr. Part No.553-30451 TCGT4.8-1.6WH-PO-X-WH
TWD3,628.00
1 Reel of 22 Metre(s)
Reel(s)
4.8mm 1.6mm White Heat Shrink - 3:1 22 mm - - No - -
RS Stock No. 316-1631
Mfr. Part No.ATUM-8/2-0
TWD400.00
Each
units
8mm 2mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 417-9560
BrandRS PRO
TWD1,051.00
1 Bag of 20
Bag(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 300 mm Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant
RS Stock No. 718-3168
Mfr. Part No.222A121-25-0
TWD625.00
Each
units
- 5.6mm - - No - - Fluid Resistant Elastomer - - 202A1 -