HellermannTyton 401-54784 Heat Shrink Tubing 2:1, 12 mm Supplied ID, Black, 1 Piece

Electrical technicians and maintenance crews rely on this heat shrink tubing to insulate splices, bundle cables, and provide mechanical protection in control panels and machinery. The tubing shrinks to half its supplied diameter when heated, forming a tight, durable jacket over wires and connectors.

Key specifications

• Shrink ratio: 2:1
• Supplied inner diameter: 12.0 mm
• Recovered inner diameter: 6.0 mm
• Recovered wall thickness: 0.65 mm
• Material: cross-linked polyolefin (PO-X)
• Colour: black
• Operating temperature range: -55°C to +135°C
• Minimum shrink temperature: +90°C
• Dielectric strength: > 20 kV/mm
• Flammability rating: UL224 VW-1 (self-extinguishing)
• Tensile strength: 15 MPa
• Elongation at break: 300%
• Chemical resistance: good against common fluids and solvents
• UV resistance: good (for black colour)
• Approvals: UL, CSA, VDE
• Packaging unit: 1 piece (typically 1 meter length)

Why choose it

The cross-linked polyolefin material offers excellent electrical insulation and resistance to abrasion, chemicals, and UV exposure. Its 2:1 shrink ratio ensures a secure fit over irregular shapes, and the self-extinguishing property adds safety in electrical applications.

Ideal use cases

• Insulating electrical splices and terminations
• Bundling and organising wire harnesses
• Providing strain relief at connector joints
• Colour coding cables for identification

Good to know

The tubing is supplied as a single piece, typically one meter in length. It meets UL, CSA, and VDE standards, making it suitable for professional electrical installations.