3M Lead Foil Tape 421 Dark Silver 3.5 in x 36 yd 6.3 mil 2 per case Bulk

3M(TM) Lead Foil Tape 421 Dark Silver, 6.3 mil (0.16 mm) lead foil backing with a green rubber adhesive. 3M(TM) Lead Foil Tape 421, used as a maskant in electroplating and as a moisture and radiation barrier in certain applications. Lead foil backing provides good conformability having electrically and thermally conductive properties.