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3M™ Lead Foil Tape 421 Dark Silver, 1/2 in x 36 yd Bulk

3M™ Lead Foil Tape 421 Dark Silver, 1/2 in x 36 yd Bulk
UPC#: 0-51138-95305-83M ID: 70006387230

Important Notice

Please note that this item is for industrial / professional use ONLY. Consumer, household or retail use is not permitted.

Case / 18 Rolls
Product Details


  • Good conformability, electrically and thermally conductive, strong acid and base resistance, electroplating, radiation barrier, x-ray plate masking, weighting and balancing, die-cuttable
  • 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
  • Markets: Automotive, Aerospace, HVAC, Appliance, Military, Government, Defense, Marine, Metal Finishing, Electronics, Recreational Vehicle, Construction, General Industrial
  • Applications: Masking, sealing, seaming, shielding, chemical stripping, harness wrapping, joining, vibration damping, electroplating, plastic protection, chemical milling, heat shielding, heat reflecting, paint stripping


3M™ Lead Foil Tape 421 Dark Silver, 6.3 mil (0.16 mm) lead foil backing with a green rubber adhesive.

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.

Backing Material Lead foil
Backing Thickness 4 Milli-inch (mil)
Backing Thickness (metric) 0.1 Millimetre
Color Dark Silver
Diameter 4.57802
Elongation 14 Percent
Length 36 Linear Yard
Length (metric) 32.918 Linear Metre
Liner Type Easy Release Film
Peak Damping Temp -65
Product Form Roll
Shelf Life 18 Month
Tensile Strength Lb/in (n/100 mm) 15 (263)
Thickness 6.3 Milli-inch (mil)
Width 0.5 Inch
Width (metric) 12.7 Millimetre