Why Choose the Partex HS21016BLACK 2:1 Black Heat Shrink Tubing?
The Partex HS21016BLACK is a professional 2:1 black heat shrink tubing designed for electrical insulation, mechanical protection and finishing of large electrical cables, conductor bundles and industrial wiring assemblies. Featuring a nominal supplied diameter of 101.6 mm and a nominal recovered diameter of 50.8 mm, this large-diameter heat shrink sleeving provides a practical solution for protecting substantial cable assemblies in industrial and commercial electrical installations.
Part of the Partex heat shrink tubing range, HS21016BLACK uses heat-activated radial 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 producing a neat, professional finish. Its black colour provides a discreet, consistent 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 101.6 mm towards a recovered diameter of 50.8 mm when heated correctly. Supplied in a convenient 15 m pack, Partex HS21016BLACK is suitable for electrical contractors, control panel manufacturers, industrial maintenance engineers and OEM equipment builders requiring cut-to-length protective sleeving for large cable assemblies.
Key Advantages
- 2:1 shrink ratio: Provides dimensional recovery for a close fit around appropriately sized cables and components.
- 101.6 mm supplied diameter: Accommodates large electrical cables, substantial conductor bundles and suitable cable connections before shrinking.
- 50.8 mm recovered diameter: Allows the tubing to contract around compatible cable assemblies for a neat protective finish.
- Black colour: Provides a professional, discreet appearance for industrial wiring and cable protection.
- Large-diameter coverage: Suitable for protecting substantial cable assemblies and grouped conductors.
- 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.
- 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.
- 15 m pack: Provides a practical quantity for large-cable installation, production and maintenance work.
- Versatile applications: Suitable for electrical equipment, machinery wiring, cable harnesses and industrial cable assemblies.
Key Features
- Partex heat shrink tubing for electrical insulation and mechanical cable protection.
- Manufacturer part number: HS21016BLACK.
- Nominal shrink ratio: 2:1.
- Nominal supplied diameter: 101.6 mm.
- Nominal recovered diameter: 50.8 mm.
- Colour: Black.
- Pack length: 15 m.
- Heat-activated radial shrinking for a close-fitting protective sleeve.
- Suitable for appropriately sized large electrical cables and conductor bundles.
- Helps protect covered wiring against routine mechanical wear.
- Provides a neat, uniform 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 Large Electrical Cable Assemblies
The Partex HS21016BLACK provides a practical solution for protecting large electrical cables, substantial conductor bundles and suitable connections that require a wide sleeve opening. Its nominal 101.6 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 50.8 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. Where a cable assembly has significant diameter variations, the selected shrink ratio and recovered dimensions must be checked carefully.
Its black finish makes HS21016BLACK 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 15 m pack is convenient for electrical assembly operations, panel-building workshops and maintenance departments that regularly prepare large-diameter cable sleeving. Installers can cut the required length, position it over the cable assembly and apply controlled heat using an appropriate heat gun. Because of the tubing's substantial diameter, even heating around the circumference is important to achieve consistent recovery without overheating the cable or adjacent components.
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. Likewise, any required voltage rating, environmental resistance or other application-specific performance must be confirmed against the relevant product documentation before installation.
Typical Applications
- Electrical insulation of appropriately sized large cables and conductor assemblies.
- Industrial control panel wiring and cable management.
- Protective sleeving for substantial cable bundles and wiring looms.
- Machinery wiring and industrial automation installations.
- Protection of suitable large 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 large electrical cable terminations.
- Workshop cable preparation and harness assembly.
- General-purpose electrical cable protection and insulation.
- Protective sleeving for grouped conductors in industrial equipment.
- Large-diameter cable covering in suitable electrical installations.
