Why Choose the Partex HSMB12BLACK 2:1 Black Heat Shrink Tubing?
The Partex HSMB12BLACK is a compact 2:1 black heat shrink tubing designed for electrical insulation, wire protection and professional finishing of small-diameter electrical conductors. Featuring a nominal supplied diameter of 1.2 mm and a nominal fully recovered diameter of 0.6 mm, this fine-diameter heat shrink sleeving provides a practical solution for protecting appropriately sized wires, small conductor sections and miniature electrical connections.
Part of the Partex heat shrink tubing range, HSMB12BLACK uses heat-activated radial contraction to form a close-fitting protective covering around compatible wires and components. The tubing helps protect covered conductors against abrasion, rubbing and routine handling damage while providing a neat, professional finish. Its black colour creates a discreet and consistent appearance for electronic assemblies, control wiring and compact cable harnesses.
With a 2:1 nominal shrink ratio, the tubing can contract from its supplied diameter of 1.2 mm towards a recovered diameter of 0.6 mm when heated correctly. Supplied in a convenient 20 m pack, Partex HSMB12BLACK is suitable for electrical contractors, electronics technicians, control panel manufacturers, maintenance engineers and OEM equipment builders requiring small-diameter protective sleeving for precision wiring applications.
Key Advantages
- 2:1 shrink ratio: Provides dimensional recovery for a close fit around appropriately sized small wires and components.
- 1.2 mm supplied diameter: Suitable for positioning over compatible fine conductors and compact wiring sections before shrinking.
- 0.6 mm recovered diameter: Allows the tubing to contract around suitable miniature wires for a neat protective finish.
- Fine-diameter construction: Particularly useful where larger heat shrink tubing would be unsuitable for the conductor size.
- Black colour: Provides a professional, discreet appearance for small wiring assemblies and electrical equipment.
- Electrical insulation: Provides additional insulating sleeving when correctly selected for the application's electrical requirements.
- Mechanical protection: Helps protect covered wires against abrasion, rubbing and routine handling damage.
- Compact protective covering: Adds sleeving without unnecessarily increasing the diameter of small wiring assemblies.
- Professional wire finishing: Creates a tidy covering around suitable conductor sections and small wiring transitions.
- Cut-to-length convenience: Allows installers to prepare individual sleeves for different wiring requirements.
- 20 m pack: Provides a practical quantity for electrical assembly, maintenance and production work.
- Versatile applications: Suitable for electronics wiring, instrumentation, control systems and miniature cable harnesses.
Key Features
- Partex heat shrink tubing for small-wire electrical insulation and mechanical protection.
- Manufacturer part number: HSMB12BLACK.
- Nominal shrink ratio: 2:1.
- Nominal supplied diameter: 1.2 mm.
- Nominal recovered diameter: 0.6 mm.
- Colour: Black.
- Pack length: 20 m.
- Heat-activated radial shrinking for close-fitting protective sleeving.
- Suitable for appropriately sized fine electrical wires and miniature conductor assemblies.
- Helps provide additional insulation around compatible small wiring sections.
- Supports a neat, uniform finish for compact electrical assemblies.
- Helps protect covered conductors against routine mechanical wear.
- Can be cut into individual lengths according to installation requirements.
- Suitable for professional electrical assembly, equipment maintenance and wiring preparation.
Reliable Insulation and Mechanical Protection for Fine Electrical Wires
The Partex HSMB12BLACK is designed for wiring applications where a compact protective sleeve is required. Its nominal 1.2 mm supplied diameter allows the tubing to be positioned over appropriately sized fine conductors and miniature wiring sections before heat is applied. Once heated correctly, the tubing contracts around the underlying wire to create a close-fitting protective covering.
The 2:1 shrink ratio provides a practical recovery range for small conductors. With a nominal fully recovered diameter of 0.6 mm, the tubing can reduce to approximately half its original diameter. Correct sizing is especially important for fine-diameter heat shrink tubing: the conductor must fit through the supplied tubing, and the sleeve must recover sufficiently to grip the finished wire without placing excessive stress on delicate components.
Fine-diameter heat shrink tubing is particularly useful in electronic equipment, instrumentation systems and compact control wiring, where individual conductors may require additional insulation or protection. HSMB12BLACK can help protect suitable wiring sections against routine mechanical wear while maintaining a relatively compact finished assembly. Its black finish provides a consistent appearance for wiring looms, equipment assemblies and miniature cable harnesses.
The 20 m pack is convenient for electrical assembly workshops, maintenance departments and OEM production environments that regularly prepare small-diameter wiring. Installers can cut the required length, slide it over the conductor and apply controlled heat using a suitable heat gun. When working with miniature conductors, careful temperature control and even heating are particularly important to avoid damaging the underlying wire insulation, soldered connections or nearby electronic components.
Where the tubing is used to cover a soldered or crimped connection, the installer must confirm that the complete connection fits through the nominal 1.2 mm opening before shrinking. For applications requiring a defined voltage rating, environmental sealing, flame classification or other specialist performance, the relevant product specifications must be checked. Standard heat shrink tubing should not be assumed to provide a watertight seal without a confirmed product rating.
Typical Applications
- Electrical insulation of appropriately sized fine conductors.
- Protective sleeving for individual small electrical wires.
- Electronic equipment wiring and component assembly.
- Instrumentation and signal wiring applications.
- Compact industrial control system wiring.
- Miniature cable harness manufacturing and assembly.
- OEM electrical and electronic equipment production.
- Protection of suitable small wire joints and transitions.
- Additional insulation around compatible miniature soldered connections.
- Electrical maintenance and fine-wire repair work.
- Workshop preparation of small conductor assemblies.
- Protection of wiring in compact electrical enclosures.
- Small-scale automation and sensor wiring, subject to dimensional suitability.
- General-purpose fine-diameter electrical insulation and wire protection.
