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庫存編號 219-6529
製造零件編號DR-25-1/2-0-7
HK$895.26
毎卷:7 米
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 7 m Elastomer Yes No DR-25 -
RS庫存編號 244-0832
製造零件編號DR-25-1/2-0-SP
HK$1,145.35
毎卷:30 米
Reel(s)
12.7mm 6.4mm Black Heat Shrink No 2:1 30 m Elastomer Yes No DR-25 -
RS庫存編號 397-679
BrandRS PRO
HK$680.30
單位
2.4 mm, 3 mm, 3.2 mm, 4.8 mm, 6.4 mm, 9.5 mm, 12.7 mm Assortiment Black, Blue, Brown, Green/Yellow, Red, White, Yellow Heat Shrink Yes 2:1, 3:1 - Polyolefin Yes - - RoHS Compliant
RS庫存編號 515-6798
製造零件編號18052
BrandDymo
HK$383.00
單位
6mm 1.2mm Yellow Heat Shrink - 3:1 1.5 m Polyolefin Yes - DYMO -
RS庫存編號 389-656
BrandRS PRO
HK$289.76
毎卷:20 米
Reel(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 20 m Polyolefin No No - ELV, RoHS Compliant, SFP (R4-0580)
RS庫存編號 277-7932
製造零件編號RW-175-1/4-X
HK$59.59
單位
6.4mm 3.2mm Clear Heat Shrink No 2:1 1.2 m PVDF Yes No KYNAR -
RS庫存編號 487-3852
BrandRS PRO
HK$773.58
單位
Assorted Assorted Assorted Heat Shrink Yes 2:1, 3:1 Assorted Lengths Polyolefin Yes - - RoHS Compliant
RS庫存編號 170-6377
製造零件編號RNF-100-3/32-0-STK
HK$14.52
單位
2.4mm 1.2mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS庫存編號 700-4541
BrandRS PRO
HK$99.87
毎卷:3 米
Reel(s)
18mm 6mm Black Heat Shrink No 3:1 3 m Polyolefin Yes No - UL
RS庫存編號 113-2596
製造零件編號RNF 100 KIT
HK$1,381.61
單位
2.4 mm, 3.2 mm, 4.8 mm, 6.4 mm, 9.5 mm Assortiment Black Heat Shrink No 2:1 Longueurs assorties Polyolefin Yes No RNF-100 -
RS庫存編號 894-7884
製造零件編號RNF-100-3/32-0-SP
HK$3,645.00
毎卷:300 個
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庫存編號 700-4532
BrandRS PRO
HK$98.45
毎卷:10 米
Reel(s)
3mm 1mm Black Heat Shrink No 3:1 10 m Polyolefin Yes No - UL
RS庫存編號 700-4535
BrandRS PRO
HK$105.17
毎卷:7 米
Reel(s)
6mm 2mm Black Heat Shrink No 3:1 7 m Polyolefin Yes No - UL
RS庫存編號 515-6760
製造零件編號18051
BrandDymo
HK$261.94
單位
6mm 1.2mm White Heat Shrink No 3:1 1.5 m Polyolefin Yes - DYMO -
RS庫存編號 515-6805
製造零件編號18054
BrandDymo
HK$495.31
單位
9mm 1.7mm Yellow Heat Shrink No 3:1 1.5 m Polyolefin Yes - DYMO -
RS庫存編號 894-7881
製造零件編號RNF-100-3/16-0-SP
HK$2,670.00
毎卷:300 個
Reel(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2 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庫存編號 700-4507
BrandRS PRO
HK$106.28
毎卷:3 米
Reel(s)
18mm 6mm Blue Heat Shrink No 3:1 3 m Polyolefin Yes No - UL
RS庫存編號 487-4265
製造零件編號RNF-100-1/4-1-STK
HK$26.01
單位
6.4mm 3.2mm Brown Heat Shrink No 2:1 1.2 m Polyolefin Yes No RNF-100 -
RS庫存編號 170-6399
製造零件編號RNF-100-3/16-0-STK
HK$18.40
單位
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2 m Polyolefin No No RNF-100 -
RS庫存編號 157-3795
製造零件編號CGAT-6/2-0
HK$48.28
單位
6mm 2mm Black Heat Shrink Yes 3:1 1.2 m Polyolefin Yes No CGAT E85381