HSMB48BLACK Partex 2:1 heat shrink tubing, 4.8/2.4mm, black, pack 12m

Why Choose the Partex HSMB48BLACK 2:1 Black Heat Shrink Tubing?

The Partex HSMB48BLACK is a versatile black heat shrink tubing designed for electrical insulation, cable protection, wire identification and professional cable management. Featuring a 2:1 shrink ratio, this tubing reduces from a nominal supplied internal diameter of 4.8 mm to 2.4 mm when fully recovered, providing a close-fitting protective sleeve around appropriately sized electrical conductors, cable connections and components.

Manufactured by Partex, a specialist in cable identification and electrical installation products, the HSMB48BLACK offers a practical solution for electrical contractors, electronics technicians, control panel builders and industrial maintenance professionals. Its black finish provides a neat, consistent appearance, making it suitable for electrical equipment, control panel wiring, cable harnesses and general electrical maintenance applications.

Supplied in a convenient 12 m pack, the Partex HSMB48BLACK provides a useful quantity of heat shrink sleeving for repeated installation, assembly and repair tasks. The 4.8 mm supplied internal diameter makes it particularly suitable for small electrical cables and compact wiring assemblies, while the 2.4 mm nominal recovered diameter allows the tubing to contract around suitably sized components.

The combination of a practical diameter, controlled shrink ratio and professional black finish makes the HSMB48BLACK a suitable choice for electrical and electronic assemblies requiring protective insulation and a tidy finished appearance.

Key Advantages

• 2:1 heat shrink ratio provides controlled diameter reduction for a close fit around appropriately sized wires and components.
• 4.8 mm supplied internal diameter reducing to approximately 2.4 mm when fully recovered.
• Versatile small-diameter design makes it suitable for electrical wires, compact cable connections and wiring assemblies.
• Black finish provides a neat, consistent appearance for professional electrical installations.
• 12 m pack offers a practical quantity for electrical installation, manufacturing and maintenance work.
• Helps provide electrical insulation and mechanical protection when appropriately specified for the application.
• Protective sleeving helps reduce exposure to abrasion and everyday mechanical wear.
• Can be cut to the required length for individual wire insulation, cable protection and assembly tasks.

Key Features

• Partex HSMB48BLACK heat shrink tubing.
• 2:1 nominal shrink ratio.
• 4.8 mm supplied internal diameter.
• 2.4 mm nominal recovered internal diameter.
• Black colour for a neat and professional wiring finish.
• 12 m pack quantity for electrical installation and maintenance requirements.
• Suitable for appropriately sized electrical wires, conductors and small cable assemblies.
• Heat-activated shrinking for a close-fitting protective covering.
• Can be cut to length for individual installation requirements.
• Suitable for electrical equipment, instrumentation, control panels and cable harness assemblies.

Reliable Electrical Insulation and Small-Diameter Cable Protection

Heat shrink tubing is widely used in electrical and electronic installations to provide protective sleeving around conductors, wire connections and electrical components. When suitable heat is applied, the tubing contracts around the underlying component, creating a close-fitting covering that can help protect against abrasion and provide additional electrical insulation where the product is appropriately specified.

The Partex HSMB48BLACK combines a practical 2:1 shrink ratio with a 4.8 mm supplied internal diameter. This makes it useful for applications involving small electrical cables, compact wiring assemblies and components where larger heat shrink tubing would be unsuitable. Once heated, the tubing contracts towards its nominal recovered internal diameter of 2.4 mm.

The tubing can be positioned over appropriately sized individual conductors, cable joints or wiring components before heat is applied. This allows installers to create a close-fitting protective covering while maintaining a tidy and organised wiring arrangement.

This can be especially beneficial in industrial control panels, electronic equipment, instrumentation systems and electrical assemblies where space is limited and careful cable management is important. The tubing may also be used to cover suitably sized soldered connections, provided the underlying electrical joint is correctly made and the sleeving is suitable for the application.

The black colour provides a discreet, professional appearance that complements many electrical and electronic assemblies. Black heat shrink tubing is commonly selected for general-purpose insulation and protective sleeving, helping create a consistent finish across cable harnesses, wire connections and equipment wiring.

Heat shrink sleeving can also support cable identification when used alongside suitable cable markers, labels or other identification products. However, black tubing should not be applied in a way that incorrectly identifies the electrical function of a conductor. In installations using harmonised conductor colours, identification must remain consistent with the applicable wiring regulations.

For effective installation, select tubing with a supplied internal diameter large enough to pass over the intended wire, connector or component and a recovered diameter suitable for achieving the required fit. Cut the tubing to the required length, position it over the area requiring protection and apply controlled, even heat using an appropriate heat gun.

Follow the manufacturer's installation recommendations and avoid excessive heating of the tubing or underlying cable insulation. Particular care should be taken when working near sensitive electronic components, delicate insulation and closely spaced electrical connections.

Where waterproofing, adhesive bonding or a specified environmental seal is required, select a product with the relevant verified properties. The HSMB48BLACK should not be assumed to provide adhesive sealing or a particular waterproof rating without confirmation from the manufacturer's technical documentation.

Typical Applications

• Electrical insulation of small wires and conductors.
• Protective sleeving for small-diameter electrical cables.
• Electrical control panel wiring and assembly.
• Electronic equipment wiring and maintenance.
• Instrumentation and signal cable protection.
• Protection of suitable electrical connections and cable joints.
• Wire harness manufacturing and assembly.
• Industrial automation and machine control systems.
• Electrical equipment manufacturing and refurbishment.
• Repair and protection of appropriately sized cable assemblies.
• Insulation around suitably sized soldered wire connections.
• Professional electrical maintenance and workshop applications.