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. 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. 873-9080
Mfr. Part No.CGPT-19/9.5-6-FSP
TWD6,416.00
1 Reel of 60
Reel(s)
19mm 9.5mm Blue Heat Shrink No 2:1 60 m Polyolefin Yes Yes CGPT ASTM D2671, CSA LR31929, IEC 243, Raychem RW-2059, UL Recognized E35586
RS Stock No. 392-309
BrandRS PRO
TWD268.80
Each (In a Pack of 5)
units
25.4mm 12.7mm White 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. 288-5241
Mfr. Part No.RT-375-3/4-X-STK
TWD329.00
Each
units
19.1mm 9.5mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No RT-375 -
RS Stock No. 447-406
Mfr. Part No.308-10303 HIS-A-3/1-PO-X-CL
TWD137.40
Each
units
3mm 1mm Clear Heat Shrink Yes 3:1 10 m Cross Linked Polyolefin Yes - HIS-A -
RS Stock No. 241-7545
BrandRS PRO
TWD514.00
Each
units
24mm 8mm Blue 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. 389-634
BrandRS PRO
TWD1,457.00
1 Reel of 25 Metre(s)
Reel(s)
2.4mm 1.2mm Black Heat Shrink No 2:1 25 m Polyolefin No No - ELV, RoHS Compliant, SFP (R4-0580)
RS Stock No. 170-6399
Mfr. Part No.RNF-100-3/16-0-STK
TWD91.00
Each
units
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS Stock No. 712-3598
Mfr. Part No.308-30162 HIS-3-BAG-1.5/0.5-PO-X-GY (10)
TWD20.80
Each (In a Bag of 10)
units
1.5mm 0.5mm Grey Heat Shrink - 3:1 200 mm Cross Linked Polyolefin Yes - HIS-3 BAG -
RS Stock No. 821-4822
Mfr. Part No.F2211/4 CL003
BrandAlpha Wire
TWD4,356.00
1 Reel of 76 Metre(s)
Reel(s)
6.3mm 3mm Clear Heat Shrink No 2:1 76 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 211-6286
BrandRS PRO
TWD2,745.00
1 Bag of 5
Bag(s)
25.4mm 12.7mm Black 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. 873-8716
Mfr. Part No.ZH2-18.0-0-FSP-SM
TWD5,462.00
1 Reel of 50 Metre(s)
Reel(s)
19mm 9mm Black Heat Shrink No 2:1 50 m Polyolefin Yes Yes ZH2 ASTM D2671, CSA LR31929 VW-1, Raychem RW-3036, UL 224, UL Recognized E35586 VW-1
RS Stock No. 848-9170
Mfr. Part No.HT-200-3/8-X-SP-CS-34128
TWD21,794.00
1 Reel of 60
Reel(s)
9.5mm 4.75mm Clear Heat Shrink No 2:1 60 m Fluoropolymer Yes No HT-200 RW-1200, SAE-AMS-DTL-23053/18 Class 3
RS Stock No. 366-2831
Mfr. Part No.DSPL-NR2-0-50MM
TWD684.00
1 Bag of 100
Bag(s)
7.4mm 1.65mm Black Heat Shrink Yes 4:1 50 mm Polyolefin Yes No DSPL -
RS Stock No. 700-4737
BrandRS PRO
TWD40.50
Each
units
2.4mm 1.2mm Blue Heat Shrink No 2:1 10 m Polyolefin Yes No - UL
RS Stock No. 397-809
Mfr. Part No.SCL-1/8-0
TWD116.00
Each (In a Pack of 5)
units
3.2mm 0.6mm Black Heat Shrink No 2.5:1 300 mm Polyolefin No No SCL -
RS Stock No. 712-3605
Mfr. Part No.308-30165 HIS-3-BAG-1.5/0.5-PO-X-GNYE (10)
TWD24.30
Each (In a Bag of 10)
units
1.5mm 0.5mm Green Heat Shrink - 3:1 200 mm Cross Linked Polyolefin Yes - HIS-3 BAG -
RS Stock No. 181-8967
Mfr. Part No.F6001/2 BK008
BrandAlpha Wire
TWD5,927.00
1 Reel of 7 Metre(s)
Reel(s)
12.7mm 7.26mm Black Heat Shrink - 2:1 7.6 m Chlorinated Polyolefin Yes - FIT-600 AMS-DTL-23053/1 Class 1 & 2, EC 1907/2006, EU Directive 2011/65
RS Stock No. 742-2410
Mfr. Part No.770-001S102R
BrandGlenair
TWD789.00
Each
units
17mm 7mm - Heat Shrink Yes - 30 mm Elastomer Yes - Series 77 -
RS Stock No. 700-4529
BrandRS PRO
TWD513.00
1 Reel of 3 Metre(s)
Reel(s)
18mm 6mm Red Heat Shrink No 3:1 3 m Polyolefin Yes No - UL