3M™ Lead Foil Tape 421 Dark Silver, 6.3 mil (0.16 mm) lead foil backing with a green rubber adhesive.
Dark silver, lead foil 4.0 mil backing, rubber adhesive, temperature range -60F to 225F
Good conformability, electrically and thermally conductive, strong acid and base resistance, electroplating, radiation barrier, x-ray plate masking, weighting and balancing
Resists flame, resists moisture, resists weather, resists UV degradation, chemical resistant tape, thermally conductive tape for heating and cooling efficiency, heat reflective tape, light reflective tape, conformable tape
Automotive, Aerospace, HVAC, Appliance, Military, Government, Defense, Marine, Metal Finishing, Electronics, Recreational Vehicle, Construction, General Industrial
3M™ 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.
Specifications
Adhesion to Steel oz/in (N/100 mm)
31 (34)
Adhesive Type
Rubber
Backing Material
Lead foil
Backing Thickness
4 Milli-inch (mil)
Backing Thickness (metric)
0.1 Millimetre
Brand
3M
Color
Dark Silver
Diameter
4.57802
Elongation
14 Percent
Industry - Use
Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicle, Transportation
