3M Lead Foil Tape 420 Silver 19 mm x 33 m

3M™ 420 is an electrically and thermally conductive lead tape, designed for specialized industrial applications, including galvanizing, anodizing, and shielding processes. Thanks to its flexible lead backing, the tape conforms perfectly to uneven surfaces, and the acrylic adhesive ensures a durable and resistant bond. The product is distinguished by high resistance to flame, moisture, weathering, UV radiation, and aggressive chemicals, making it suitable for harsh environments. The protective film allows for easy die-cutting into custom shapes, facilitating precise application during assembly or production.

Technical Specification

• Width: 19 mm
• Length: 33 m
• Thickness: 0.17 mm
• Color: Silver
• Type: Lead tape with acrylic adhesive
• Backing: Lead
• Protective liner: Film, easily removable

Application

• Electrical conduction in industrial processes
• Masking and protection in galvanizing and anodizing
• Insulation and surface protection against chemicals and UV
• Conforming and shaping tape to irregular forms
• Applications requiring thermal or electrical conductivity

Benefits and Properties

✅ Electrical and thermal conductivity – ideal for specialized applications
✅ Excellent conformability – flexible lead backing molds to surfaces
✅ High resistance – protects against flame, UV, moisture, and chemicals
✅ Easy processing – protective liner allows die-cutting into any shapes
✅ Wide range of applications – suitable for various temperatures and materials
✅ Reliability – durability and sealing even in aggressive environments

Application Tips

Before application, ensure the surface is clean, dry, and degreased. The tape should be pressed evenly to achieve full adhesion. Due to its construction, the tape can be easily die-cut into various forms, allowing it to be adapted to specific technological needs.