HS21016BLUE Partex 2:1 heat shrink tubing, 101.6/50.8mm, blue, pack 15m

Why Choose the Partex HS21016BLUE 2:1 Blue Heat Shrink Tubing?

The Partex HS21016BLUE is a large-diameter blue heat shrink tubing designed for electrical insulation, cable protection, conductor identification and professional cable management. Featuring a 2:1 shrink ratio, this tubing reduces from a nominal supplied internal diameter of 101.6 mm to 50.8 mm when fully recovered, providing a close-fitting protective sleeve around appropriately sized cables, cable bundles and electrical components.

Manufactured by Partex, a specialist in cable identification and electrical installation products, this blue heat shrink tubing offers a practical solution for protecting larger cable assemblies while supporting clear and consistent identification. Its distinctive blue colour makes it useful for colour-coded electrical installations, helping electricians, control panel builders and maintenance engineers distinguish designated conductors and cable groups.

Supplied in a convenient 15 m pack, the HS21016BLUE is suitable for electrical contractors, industrial manufacturers, automation engineers and maintenance professionals requiring large-diameter protective sleeving. With its 101.6 mm supplied internal diameter and 50.8 mm nominal recovered internal diameter, it is particularly useful for larger cables, grouped conductors, electrical terminations and industrial cable protection applications.

Key Advantages

• 2:1 heat shrink ratio provides a close fit around appropriately sized cables and electrical components.
• 101.6 mm supplied diameter reducing to approximately 50.8 mm when fully recovered.
• Large-diameter design accommodates wider cable assemblies and suitably sized cable bundles.
• Blue colour coding supports clear conductor identification and organised electrical wiring.
• 15 m pack provides a practical quantity for professional installation and maintenance applications.
• 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 cable identification, insulation and protection tasks.

Key Features

• Partex HS21016BLUE heat shrink tubing.
• 2:1 nominal shrink ratio.
• 101.6 mm supplied internal diameter.
• 50.8 mm nominal recovered internal diameter.
• Blue colour for suitable conductor identification and colour-coded wiring applications.
• 15 m pack quantity for professional electrical installation requirements.
• Large-diameter tubing suitable for appropriately sized cables and cable bundles.
• Heat-activated shrinking for a neat, close-fitting protective sleeve.
• Can be cut to length for individual installation requirements.
• Suitable for electrical wiring, industrial machinery, control panels and cable assemblies.

Reliable Electrical Insulation and Large-Diameter Cable Protection

Heat shrink tubing is widely used in electrical and industrial installations to provide protective sleeving around conductors, cable 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 HS21016BLUE combines a practical 2:1 shrink ratio with a generous 101.6 mm supplied internal diameter. This larger opening makes it particularly useful when protective sleeving must pass over wider cable assemblies, grouped conductors or components that cannot be accommodated by smaller-diameter tubing. Once heated, the tubing contracts towards its nominal recovered internal diameter of 50.8 mm.

In UK and European harmonised electrical installations, blue is the recognised identification colour for neutral conductors. Blue heat shrink sleeving can therefore assist with neutral conductor identification at suitable cable terminations and within electrical equipment. However, its use must comply with applicable wiring regulations, and blue sleeving should not be applied in a way that could incorrectly identify a conductor's function. Where a cable bundle contains multiple conductor types, the blue outer sleeve must not create confusion about the conductors within it.

For effective installation, select tubing with a supplied internal diameter large enough to pass over the intended cable, connector or component and a recovered diameter suitable for the required fit. Cut the tubing to length and apply controlled, even heat using an appropriate heat gun, following the manufacturer's installation recommendations. Avoid excessive heating of the tubing or underlying cable insulation. Where waterproofing, adhesive bonding or a specified environmental seal is required, select a product with the relevant verified properties rather than assuming standard heat shrink tubing provides a sealed connection.

Typical Applications

• Electrical wire and cable insulation.
• Blue colour-coded conductor identification.
• Neutral conductor identification in suitable electrical installations.
• Protective sleeving for larger-diameter cables.
• Covering appropriately sized cable bundles and grouped conductors.
• Industrial machinery and equipment wiring.
• Electrical control panel assembly and cable management.
• Protection of suitable electrical connections and cable terminations.
• Wire harness manufacturing and assembly.
• Industrial automation and machine control systems.
• Electrical equipment manufacturing and maintenance.
• Commercial and industrial electrical installations.