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HS2381BLACK Partex 2:1 heat shrink tubing, 38.1/19mm, black, pack 30m
Partex HS2381BLACK black 2:1 heat shrink tubing with a 38.1 mm supplied diameter, 19 mm recovered diameter and 30 m pack length, designed for electrical insulation and mechanical protection of larger cables, conductor bundles and industrial wiring assemblies.
£150.28
Why Choose the Partex HS2381BLACK 2:1 Black Heat Shrink Tubing?
The Partex HS2381BLACK is a versatile 2:1 black heat shrink tubing designed for electrical insulation, cable protection and mechanical protection of larger wires, cable bundles and electrical connections. Featuring a nominal supplied diameter of 38.1 mm and a nominal recovered diameter of 19 mm, this heat shrink sleeving provides a practical solution for protecting larger conductors and cable assemblies in industrial electrical installations.
Part of the Partex heat shrink tubing range, HS2381BLACK uses heat-activated contraction to form a close-fitting protective sleeve around appropriately sized cables and components. The tubing helps protect covered wiring against abrasion, rubbing and routine handling damage while providing a neat, professional finish. Its black colour offers a discreet appearance that integrates well with industrial cable installations, electrical equipment and wiring harnesses.
With a 2:1 nominal shrink ratio, the tubing can contract from its supplied diameter of 38.1 mm towards a recovered diameter of 19 mm when heated correctly. Supplied in a convenient 30 m pack, Partex HS2381BLACK is suitable for control panel manufacturers, electrical contractors, industrial maintenance engineers and OEM equipment builders requiring cut-to-length protective sleeving for larger cable assemblies.
Key Advantages
- 2:1 shrink ratio: Provides dimensional recovery for a close fit around appropriately sized cables and components.
- 38.1 mm supplied diameter: Accommodates larger cables, conductor bundles and electrical connections before shrinking.
- 19 mm recovered diameter: Allows the tubing to contract around suitable cable assemblies for a neat protective finish.
- Black colour: Provides a professional, discreet appearance for industrial wiring and cable protection.
- Electrical insulation: Provides additional insulating sleeving when correctly selected for the application's electrical requirements.
- Mechanical protection: Helps reduce exposure to abrasion, rubbing and routine handling damage.
- Large-diameter coverage: Suitable for protecting larger cable assemblies and grouped conductors.
- Professional finish: Creates a tidy covering around cable transitions, conductor bundles and suitable electrical terminations.
- Cut-to-length convenience: Allows installers to prepare individual sleeves for different cable assemblies.
- 30 m pack: Provides a practical quantity for installation, production and maintenance work.
- Versatile applications: Suitable for electrical panels, machinery wiring, cable harnesses and industrial equipment assemblies.
Key Features
- Partex heat shrink tubing for electrical insulation and cable protection.
- Manufacturer part number: HS2381BLACK.
- Nominal shrink ratio: 2:1.
- Nominal supplied diameter: 38.1 mm.
- Nominal recovered diameter: 19 mm.
- Colour: Black.
- Pack length: 30 m.
- Heat-activated radial shrinking for a close-fitting sleeve.
- Suitable for appropriately sized larger cables and grouped conductors.
- Helps protect covered wiring against routine mechanical wear.
- Provides a neat finish for industrial electrical cable assemblies.
- Can be cut into individual lengths to suit installation requirements.
- Suitable for professional electrical installation, maintenance and assembly applications.
Reliable Insulation and Mechanical Protection for Larger Cable Assemblies
The Partex HS2381BLACK provides a convenient solution for protecting larger electrical cables, conductor bundles and connections that require a substantial sleeve opening. Its nominal 38.1 mm supplied diameter allows the tubing to be positioned over appropriately sized cable assemblies, wiring transitions and components before heat is applied. Once heated correctly, the tubing contracts around the assembly to create a close-fitting protective covering.
The 2:1 shrink ratio offers flexibility when selecting tubing for cable assemblies with variations in diameter. The nominal recovered diameter of 19 mm allows the tubing to reduce to approximately half its original diameter, helping installers achieve a tidy and consistent finish. Correct sizing is essential: the tubing must fit over the largest part of the assembly before shrinking and recover sufficiently to grip the intended surface.
Its black finish makes HS2381BLACK particularly useful for general-purpose protective sleeving where a discreet, professional appearance is preferred. Black heat shrink tubing can help maintain a consistent appearance across cable harnesses, industrial control cabinets and machinery installations. Where conductor identification is required, the tubing must be used in accordance with applicable electrical wiring standards and must not obscure essential identification markings.
The 30 m pack is convenient for panel-building workshops, electrical assembly operations and maintenance departments that regularly prepare cable sleeving. Installers can cut the required length, position it over the conductor or cable assembly and apply controlled heat using an appropriate heat gun. For applications requiring moisture sealing, a specifically rated adhesive-lined or sealing product should be selected rather than assuming standard heat shrink tubing provides a watertight seal.
Typical Applications
- Electrical insulation of appropriately sized larger cables and conductor assemblies.
- Industrial control panel wiring and cable management.
- Protective sleeving for larger cable bundles and wiring looms.
- Machinery wiring and industrial automation installations.
- Protection of suitable cable joints and wiring transitions.
- Electrical distribution equipment and switchgear assemblies.
- Industrial cable harness manufacturing and assembly.
- OEM equipment manufacturing and electrical production lines.
- Industrial maintenance, repairs and refurbishment work.
- Protective finishing of suitable electrical cable terminations.
- Workshop cable preparation and harness assembly.
- General-purpose electrical cable protection and insulation.
Technical Specifications
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| Supply Format | 30 m | |
|---|---|---|
| Device Type | Heat-shrink tubing | |
| Material | Polyolefin | |
| Cable Diameter (mm) | 19–38.1 mm | |
| Internal Diameter Before Shrinking (mm) | 38.1 mm | |
| Shrink Ratio | 2:1 | |
| Colour | Black | |
| Adhesive Lined | No | |
| Manufacturer | Partex | |
| Product range | 2:1 Heat Shrink Tubing | |
| Manufacturer part number | HS2381BLACK | |
| Product type | Heat shrink tubing / electrical insulation sleeving | |
| Nominal shrink ratio | 2:1 | |
| Nominal diameter before shrinking | 38.1 mm | |
| Nominal diameter after recovery | 19 mm | |
| Colour | Black | |
| Pack length | 30 m | |
| Shrinking method | Controlled application of heat | |
| Primary functions | Cable insulation, mechanical protection and protective sleeving | |
| Installation | Cut to length, position over the cable and apply heat evenly | |
| Typical installation environments | Control panels, electrical assemblies, machinery and cable harnesses | |
| HS Code | 39269097 |
Frequently Asked Questions
What is the Partex HS2381BLACK heat shrink tubing used for?
The Partex HS2381BLACK is used for electrical insulation and mechanical protection of appropriately sized larger cables, conductor bundles and electrical connections. It is suitable for industrial control panels, machinery wiring, electrical assemblies and cable harnesses.
What does the 2:1 shrink ratio mean?
A 2:1 shrink ratio means the tubing can contract to approximately half its original nominal diameter when fully recovered under suitable heating conditions. This allows it to fit closely around appropriately sized cables and components.
What are the supplied and recovered diameters of HS2381BLACK?
The tubing has a nominal supplied diameter of 38.1 mm and a nominal fully recovered diameter of 19 mm. The cable or component must fit inside the tubing before shrinking, and the tubing must be capable of recovering sufficiently around the finished assembly.
How much Partex HS2381BLACK tubing is supplied?
Partex HS2381BLACK is supplied in a 30 m pack. The tubing can be cut into shorter sections to suit individual cable insulation and protection requirements.
Is the black heat shrink tubing suitable for larger cable bundles?
Yes. The 38.1 mm nominal supplied diameter makes HS2381BLACK suitable for appropriately sized larger cable bundles and conductor assemblies. The tubing can recover towards a nominal diameter of 19 mm, so the final cable diameter must be considered to ensure a suitable fit.
Is Partex HS2381BLACK waterproof?
The tubing provides protective sleeving around suitable cables and connections, but a waterproof or moisture-sealing performance should not be assumed without a confirmed product rating. Where environmental sealing is required, select a heat shrink product specifically designed and rated for that purpose.
How should the Partex HS2381BLACK be installed?
Cut the tubing to the required length, slide it over the cable or suitable electrical connection and apply controlled, even heat using an appropriate heat gun. Continue heating until the tubing has contracted around the assembly, then allow it to cool before handling. Ensure the cable is safely isolated and the tubing is correctly sized for the intended application.
Trusted for Professional Cable Insulation and Protection
Partex heat shrink tubing offers electrical contractors, panel builders, OEM manufacturers and industrial maintenance teams a practical solution for cable protection, insulation and professional wiring finishes. The HS2381BLACK variant combines a nominal 38.1 mm supplied diameter, 19 mm recovered diameter, 2:1 shrink ratio and convenient 30 m pack length for efficient preparation and protection of larger cable assemblies.
