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. 700-4469
BrandRS PRO
TWD515.00
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm Clear Heat Shrink No 3:1 4 m Polyolefin No No - UL
RS Stock No. 700-4513
BrandRS PRO
TWD591.00
1 Reel of 7 Metre(s)
Reel(s)
6mm 2mm Red Heat Shrink No 3:1 7 m Polyolefin Yes No - UL
RS Stock No. 562-678
BrandRS PRO
TWD356.00
1 Bag of 1
Bag(s)
9mm 3mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes Yes - ASTM, BS 6853, BSS 7239, LUL E 1042. A6, RoHS Compliant, SAE-AMS-DTL-23053
RS Stock No. 399-984
BrandRS PRO
TWD466.40
Each (In a Pack of 5)
units
38.1mm 19.1mm Clear Heat Shrink No 2:1 1.2 m 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. 537-8128
BrandRS PRO
TWD887.00
1 Bag of 1
Bag(s)
25.4mm 12.7mm Grey 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. 122-3477
Mfr. Part No.DWFR-4/1-0-STK
TWD235.20
Each (In a Pack of 25)
units
4mm 1mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No DWFR -
RS Stock No. 712-3585
Mfr. Part No.308-30160 HIS-3-BAG-1.5/0.5-PO-X-RD (10)
TWD20.80
Each (In a Bag of 10)
units
1.5mm 0.5mm Red Heat Shrink - 3:1 200 mm Cross Linked Polyolefin Yes - HIS-3 BAG -
RS Stock No. 316-1041
Mfr. Part No.SST-12-27/FR-RSU
TWD790.00
Each
units
68.5mm 22.86mm Black Heat Shrink Yes 3:1 304.8 mm Polymer Yes No SST -
RS Stock No. 914-6865
Mfr. Part No.309-15080 TF21-50.8/25.4-PO-X-BK (60)
TWD38,863.00
1 Reel of 60 Metre(s)
Reel(s)
50.8mm 25.4mm Black Heat Shrink - 2:1 60 m Polyolefin Yes - TF21 CSA, JAR/FAR, NF F, SAE, UL Listed, UL Recognized
RS Stock No. 268-5029
BrandRS PRO
TWD425.00
1 Bag of 1
Bag(s)
12.7mm 6.4mm 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. 277-7960
Mfr. Part No.RW-175-3/4-X
TWD1,310.00
Each
units
19.1mm 9.5mm Clear Heat Shrink No 2:1 1.2 m PVDF Yes No KYNAR -
RS Stock No. 818-7981
Mfr. Part No.91-WT31-0942
BrandKroy
TWD5,922.00
Each
units
9.5mm - White Heat Shrink - 3:1 55 m Polyolefin Yes - - -
RS Stock No. 450-569
Mfr. Part No.323-20750 MA47-75/22-PO-X-BK
TWD1,131.00
Each
units
75mm 22mm Black Heat Shrink Yes 4:1 1 m Cross Linked Polyolefin - - MA47 -
RS Stock No. 398-414
BrandRS PRO
TWD299.00
Each
units
9.5mm 4.8mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 700-4692
BrandRS PRO
TWD537.00
1 Reel of 5 Metre(s)
Reel(s)
19mm 9.5mm Red Heat Shrink No 2:1 5 m Polyolefin Yes No - UL
RS Stock No. 515-5565
Mfr. Part No.18055
BrandDymo
TWD1,456.00
Each
units
12mm 3mm White Heat Shrink No 3:1 1.5 m Polyolefin Yes - DYMO -
RS Stock No. 341-6111
Mfr. Part No.RNF-100-2-6-STK
TWD822.00
Each
units
51mm 25.4mm Blue Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 537-7967
BrandRS PRO
TWD161.00
1 Bag of 1
Bag(s)
2.4mm 1.2mm Brown 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. 832-7022
Mfr. Part No.333-31800 TF31-18/6-PO-X-BK
TWD6,498.00
1 Reel of 30 Metre(s)
Reel(s)
18mm 6mm Black Heat Shrink - 3:1 30 m Polyolefin Yes - TF31 -
RS Stock No. 267-2348
BrandRS PRO
TWD276.00
1 Bag of 1
Bag(s)
9.5mm 4.8mm White 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