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. 712-3579
Mfr. Part No.308-31216 HIS-3-BAG-12/4-PO-X-MIX (15)
TWD499.00
1 Bag of 15
Bag(s)
12.4mm 4mm Assorted Heat Shrink - 3:1 200 mm Polyolefin Yes - HIS-3 BAG -
RS Stock No. 267-2146
BrandRS PRO
TWD1,219.00
1 Bag of 1
Bag(s)
25.4mm 12.7mm Blue 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. 443-4974
BrandRS PRO
TWD1,287.00
1 Bag of 20
Bag(s)
25.4mm 12.7mm Clear Heat Shrink No 2:1 300 mm Polyolefin No Yes - 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. 821-4759
Mfr. Part No.F2213/32 CL002
BrandAlpha Wire
TWD4,897.00
1 Reel of 152 Metre(s)
Reel(s)
2.3mm 1mm Clear Heat Shrink No 2:1 152 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 170-2741
Mfr. Part No.CGPT-6.4/3.2-0-STK
TWD107.00
Each
units
6.4mm 3.2mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes No CGPT CSA, UL
RS Stock No. 123-8479
Mfr. Part No.Versafit-1/4-0-SP-SM
TWD9,172.00
1 Reel of 152
Reel(s)
7.1mm 3.2mm Black Heat Shrink No 2:1 152 m Polyolefin No No VERSAFIT AMS-DTL-23053/5, CSA, E35586 VW-1, MIL-DTL-23053/5, MIL-I-23053/5, R31929 VW-1, RW-3009, UL
RS Stock No. 187-1424
Mfr. Part No.342-22540 PST-H-25.4/12.7-POA-BK (50)
TWD562.30
Each
units
25.4mm 12.7mm Black Heat Shrink - 2:1 - - - - PST-H VG95343 Type D
RS Stock No. 848-9149
Mfr. Part No.HT-200-1-X-STK-CS-34128
TWD3,974.00
Each
units
25.4mm 12.7mm Clear Heat Shrink No 2:1 1 m Fluoropolymer Yes No HT-200 RW-1200, SAE-AMS-DTL-23053/18 Class 3
RS Stock No. 832-7007
Mfr. Part No.333-30300 TF31-3/1-PO-X-BK
TWD2,464.00
1 Reel of 30 Metre(s)
Reel(s)
3mm 1mm Black Heat Shrink - 3:1 30 m Polyolefin Yes - TF31 -
RS Stock No. 914-6821
Mfr. Part No.300-30240 HIS-PACK-2.4/1.2-PO-X-BK (10)
TWD69.30
Each
units
2.4mm 1.2mm Black Heat Shrink - 2:1 10 m Polyolefin Yes - HIS-PACK SAE, UL Listed, UL Recognized
RS Stock No. 251-7601
Mfr. Part No.8427-12
Brand3M
TWD1,570.00
Each
units
35mm 16.8mm Black Cold Shrink - - 305 mm EPR - - 8420 -
RS Stock No. 399-653
BrandRS PRO
TWD466.40
Each (In a Pack of 5)
units
38.1mm 19.1mm Yellow Heat Shrink No 2:1 1.2 m Polyolefin Yes No - -
RS Stock No. 443-4952
BrandRS PRO
TWD999.00
1 Bag of 20
Bag(s)
12.7mm 6.4mm Clear Heat Shrink No 2:1 300 mm Polyolefin No Yes - 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. 341-5938
Mfr. Part No.RNF-100-3/16-6-STK
TWD75.00
Each
units
4.8mm 2.4mm Blue Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 894-7897
Mfr. Part No.RNF-100-1/2-0-SP
TWD18,932.00
1 Reel of 150
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 150 m 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. 194-6417
Mfr. Part No.339-03189 TFE4-1 1/4-PTFE-CL
TWD99,845.00
1 Bag of 25
Bag(s)
31.75mm 8.82mm Clear Heat Shrink - 4:1 1.2 m PTFE - - TFE4 ELV
RS Stock No. 839-5482
Mfr. Part No.F2213/8 BK065
BrandAlpha Wire
TWD41.00
Each
units
9.5mm 4.75mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 333-6419
Mfr. Part No.222A132-25-0
TWD516.00
Each
units
- 6.4mm Black Heat Shrink No - 26.9 mm Fluid Resistant Elastomer - - 202A1 -
RS Stock No. 877-6291
Mfr. Part No.333-30307 TF31-3/1-PO-X-GNYE
TWD4,089.00
1 Reel of 30
Reel(s)
3mm 1mm Green Heat Shrink - 3:1 30 m Polyolefin Yes - TF31 RoHS Compliant, SA, UL, UL Listed
RS Stock No. 194-6408
Mfr. Part No.339-00209 TFE4-5/64-PTFE-CL
TWD35,003.00
1 Bag of 50
Bag(s)
1.98mm 0.64mm Clear Heat Shrink - 4:1 1.2 m PTFE - - TFE4 ELV