3M™ Lead Foil Tape 421 is a highly conformable lead foil tape with a rubber adhesive designed for applications requiring conductivity, shielding, and tight surface conformity.
With a total thickness of 6.6 mil (0.17 mm), it provides a dense, flexible backing that easily conforms to irregular surfaces while maintaining strong adhesion.
This tape offers both electrical and thermal conductivity, making it ideal for specialized industrial applications such as electroplating, radiation shielding, and chemical processing.