3M 420 US Conductive Metallic Tape, 19mm x 32.9 m 106 °C Max

This metallic tape provides a conductive, lead-backed solution for EMI/RFI shielding and earthing tasks in industrial settings. It is suited to electrical and electronic assemblies where conductive continuity and surface coverage are required, offering a thin metallic layer for contact and mitigation of electromagnetic interference across a range of ambient conditions.

• High adhesion rated at 490 N/cm provides secure bonding under stress
• Conductive rubber adhesive ensures electrical continuity where applied
• Lead backing delivers effective shielding for interference control
• Tensile strength of 350N/100mm resists mechanical strain during installation
• Operates between -51°C and +107°C for wide temperature resilience
• Thickness 0.17mm supports low-profile conformable applications

• Suitable for EMI/RFI shielding on enclosures and chassis
• Ideal for earthing straps and conductor repair on assemblies
• Used for seam and joint bonding in cable management systems
• Can be used for contact restoration on shielding surfaces
• Used with sensor housings to maintain conductive continuity

Surfaces should be clean and degreased before application

Standard lead-handling hygiene is recommended, including minimising dust and washing hands after use

Each roll provides 32.9 m of tape supplied at a width of 19mm for extended runs without frequent splicing.

The tape’s tensile capacity of 350 N/100mm indicates good resistance to pull forces but users should avoid prolonged flexing that could fatigue the backing.

The tape conforms to the HH-T-29B standard, reflecting its intended performance characteristics for conductive shielding materials.