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. 666-931
BrandRS PRO
TWD968.00
1 Box of 3
Box(es)
25.4mm 12.7mm Black Heat Shrink No 2:1 3 m Polyolefin Yes No - RoHS Compliant, UL
RS Stock No. 194-6415
Mfr. Part No.339-01909 TFE4-3/4-PTFE-CL
TWD55,773.00
1 Bag of 25
Bag(s)
19.05mm 5.69mm Clear Heat Shrink - 4:1 1.2 m PTFE - - TFE4 ELV
RS Stock No. 639-3500
Mfr. Part No.323-50120 TREDUX-MA47-12/3-PO-X-BK
TWD374.00
Each
units
12mm 3mm Black Heat Shrink Yes 3:1 1 m Cross Linked Polyolefin - - TREDUX-MA47 -
RS Stock No. 267-2354
BrandRS PRO
TWD412.00
1 Bag of 1
Bag(s)
12.7mm 6.4mm 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
RS Stock No. 487-4300
Mfr. Part No.RNF-100-3/4-1-STK
TWD173.00
Each
units
19mm 9.5mm Brown Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS Stock No. 537-8033
BrandRS PRO
TWD237.00
1 Bag of 1
Bag(s)
6.4mm 3.2mm 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. 177-9252
Mfr. Part No.RNF 3000-9/3-2-2
TWD318.00
Each
units
9mm 3mm Red Heat Shrink No 3:1 1.2 m Polyolefin Yes No RNF-3000 UL
RS Stock No. 821-4796
Mfr. Part No.F2211/8 RD002
BrandAlpha Wire
TWD5,179.00
1 Reel of 152 Metre(s)
Reel(s)
3.1mm 2mm Red Heat Shrink No 2:1 152 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 894-7988
Mfr. Part No.Versafit-3/8-0-SP-SM
TWD6,741.00
1 Reel of 60 Metre(s)
Reel(s)
10.1mm 4.8mm Black Heat Shrink No 2:1 60 m Polyolefin No No VERSAFIT AMS-DTL-23053/5, CSA, E35586 VW-1, LR31929 VW-1, MIL-DTL-23053/5, MIL-I-23053/5, RoHS Complaint, RW-3009, UL Recognisation
RS Stock No. 399-631
BrandRS PRO
TWD157.20
Each (In a Pack of 5)
units
19.1mm 9.5mm Yellow 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. 267-2089
BrandRS PRO
TWD163.00
1 Bag of 1
Bag(s)
3.2mm 1.6mm 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. 181-6794
Mfr. Part No.317-00037 TG40-6/1.27 50mm-PO-X-CL
TWD537.00
1 Bag of 100
Bag(s)
6mm 1.27mm Clear Heat Shrink Yes 4:1 50 mm - Yes - TG40 -
RS Stock No. 639-3544
Mfr. Part No.319-02400 TREDUX-24/8-PO-X-BK
TWD354.00
Each
units
24mm 8mm Black Heat Shrink - 3:1 1 m Cross Linked Polyolefin Yes - TREDUX -
RS Stock No. 125-9291
Mfr. Part No.ES2000-NO.2-B9-0-STK
TWD161.40
Each (In a Pack of 50)
units
7.4mm 1.65mm Black Heat Shrink Yes 4:1 1220 mm Irradiated Polyolefin Yes - ES2000 EU ELV Compliant, UL Recognised
RS Stock No. 194-6397
Mfr. Part No.311-00249 TK20-2.4/1.2-PVDF-CL
TWD96.00
Each
units
2.4mm 1.2mm Clear Heat Shrink - 2:1 1.2 m Polyvinylidene Fluoride - - TK20 -
RS Stock No. 397-843
Mfr. Part No.SCL-1/2-0
TWD92.00
Each (In a Pack of 5)
units
12.7mm 5mm Black Heat Shrink No 3:1 300 mm Polyolefin No No SCL -
RS Stock No. 333-6330
Mfr. Part No.202A111-25-0
TWD315.00
Each
units
- 3.8mm Black Heat Shrink - - 25.4 mm - - - 202A1 -
RS Stock No. 865-9922
Mfr. Part No.LSTT-25.4-0-SP
TWD5,880.00
1 Reel of 60 Metre(s)
Reel(s)
25.4mm 12.7mm Black Heat Shrink No 2:1 60 m Polyolefin No No LSTT -
RS Stock No. 811-2662
Mfr. Part No.TE100046198
Brand3M
TWD96.00
Each
units
6mm 2mm Black Heat Shrink No 3:1 1 m Polyolefin - - GTI-3000 -
RS Stock No. 316-1669
Mfr. Part No.ATUM-24/6-0
TWD563.00
Each
units
24mm 6mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -