
3M Lead Foil Tape 420
Overview 3M™ Lead Foil Tape 420 is a highly conformable lead foil tape with a rubber-based adhesive and an easy-release film liner. It is designed for applications requiring a combination of electrical and thermal conductivity, chemical resistance, moisture resistance, radiation resistance, and flex
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Products Description
3M™ Lead Foil Tape 420 is a highly conformable lead foil tape with a rubber-based adhesive and an easy-release film liner.
Products Features
- Temperature Resistance: -51°C to 107°C
- Tensile Strength: 350 N/100 mm
- Elongation at Break: 12%
- Backing Thickness: 0.13 mm / 5 mil
- Backing / Carrier: Lead foil
- Adhesive: Rubber
Products Construction
Backing: Lead foil; Adhesive: Rubber.

Physical Properties
| Technical Parameter | Specification |
|---|---|
| Product type | Lead foil tape |
| Backing material | Lead foil |
| Adhesive type | Rubber |
| Color | Dark silver |
| Adhesive color | Green |
| Backing thickness | 0.13 mm / 5 mil |
| Total tape thickness | 0.17 mm / 6.8 mil |
| Liner thickness | Approx. 0.09 mm / 3.5 mil |
| Adhesion to steel | 49 N/100 mm |
| Tensile strength | 350 N/100 mm |
| Elongation at break | 12% |
| Temperature use range | -51°C to 107°C |
| Standard roll length | 33 m / 36 yd |
| Electrical conductivity | Yes |
| Thermal conductivity | Yes |
| Water vapor transmission | 1.55 g/m²/24 h |
Values shown are from the product data sheet. Confirm suitability for your specific application before ordering.
Products Application
This tape is used in industrial assembly and conversion processes. Tell us the substrates, the working conditions and the required size, and our team will confirm the right model for your application.
FAQ
Can this tape be supplied die-cut or in custom widths?
Our die-cutting service covers custom shapes and widths. Send your drawing or the required width and length, and we will confirm availability for this model.
What temperature can it withstand?
According to the product data, the value is -51°C to 107°C. Confirm your process temperature with our team before ordering.
How do I request a sample or quotation?
Send the model, required size, color, quantity and your application to [email protected], or use the inquiry form on this page.
Request a Quote
To help us prepare a quotation, please include the model, required width and length, color, quantity and your application. You can also e-mail [email protected].


