Heat-Shrink & Cold-Shrink Sleeves

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. 894-7884
Mfr. Part No.RNF-100-3/32-0-SP
£354.97
1 Reel of 300
Reel(s)
2.4mm 1.2mm Black Heat Shrink No 2:1 300 m 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. 481-1797
BrandRS PRO
£4.68
Each
Units
6.4mm 2mm Black 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. 417-7227
BrandRS PRO
£12.45
1 Bag of 20 Metre(s)
Bag(s)
2.4mm 1.2mm Black Heat Shrink No 2:1 300 mm Polyolefin Yes No - 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. 666-868
BrandRS PRO
£23.38
1 Box of 25 Metre(s)
Box(es)
2.4mm 1.2mm Black Heat Shrink No 2:1 25 m Polyolefin Yes No - RoHS Compliant, UL
RS Stock No. 398-212
BrandRS PRO
£1.396
Each
Units
2.4mm 1.2mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes No - 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. 458-0702
BrandRS PRO
£6.00
1 Bag of 10
Bag(s)
- 0.5 → 1.5mm Red Heat Shrink No 1:1 37 mm Polyolefin - - - RoHS Compliant
RS Stock No. 811-2704
Mfr. Part No.MDTA32/7
Brand3M
£10.03
Each
Units
32mm 7mm Black Heat Shrink Yes 4.5:1 1 m Polyolefin Yes - MDT-A -
RS Stock No. 170-6383
Mfr. Part No.RNF-100-1/8-0-STK
£2.10
Each
Units
3.2mm 1.6mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 417-7277
BrandRS PRO
£12.00
1 Bag of 20 Metre(s)
Bag(s)
9.5mm 4.8mm Black Heat Shrink No 2:1 300 mm Polyolefin Yes No - 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. 398-177
BrandRS PRO
£2.168
Each
Units
9.5mm 4.8mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes No - 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. 666-903
BrandRS PRO
£22.40
1 Box of 12 Metre(s)
Box(es)
9.5mm 4.8mm Black Heat Shrink No 2:1 12 m Polyolefin Yes No - RoHS Compliant, UL
RS Stock No. 398-149
BrandRS PRO
£4.488
Each
Units
25.4mm 12.7mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes No - 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. 417-7306
BrandRS PRO
£41.97
1 Metre(s)
Units
25.4mm 12.7mm Black Heat Shrink No 2:1 300 mm Polyolefin Yes No - 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. 666-931
BrandRS PRO
£17.55
1 Box of 3 Metre(s)
Box(es)
25.4mm 12.7mm Black Heat Shrink No 2:1 3 m Polyolefin Yes No - RoHS Compliant, UL
RS Stock No. 157-3880
Mfr. Part No.DWTC-16/4-X-STK
£11.36
Each
Units
16mm 4mm Clear Heat Shrink Yes 4:1 1.2 m Polyolefin No No DWTC -
RS Stock No. 484-8957
Mfr. Part No.HFT5000-60/30.0
£23.44
1 Bag of 5
Bag(s)
60mm 30mm Black Heat Shrink No 2:1 5 m PE/PET Yes Yes HFT5000 -
RS Stock No. 170-2785
Mfr. Part No.CGPT-25.4/12.7-0-STK
£5.11
Each
Units
25.4mm 12.7mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes No CGPT CSA, UL
RS Stock No. 487-4451
Mfr. Part No.RNF-100-COL-KIT2
£90.00
Each
Units
25.4mm 12.7mm - Heat Shrink No 2:1 Assorted Length Cross Linked Polyolefin Yes No RNF-100 -
RS Stock No. 316-1631
Mfr. Part No.ATUM-8/2-0
£8.53
Each
Units
8mm 2mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 398-161
BrandRS PRO
£2.32
Each
Units
12.7mm 6.4mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes No - 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
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