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3M™ Lead Foil Tape 421 Dark Silver, 1-1/2 in x 36 yd 6.3 mil, 6 rolls per case Bulk

3M ID  70006387313    UPC#  00051138953133    3M Product Number  421     
3M(TM) Lead Foil Tape 421
3M(TM) Lead Foil Tape 421
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 225 degrees F
  • 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
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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.


 Adhesion to Steel oz/in (N/100 mm)‎‎ 31 (34)
 Adhesive Type‎‎ Rubber
 Backing Material‎‎ Lead foil
 Backing Thickness‎‎ 4 mil
 Backing Thickness (metric)‎‎ 0.1 mm
 Brand‎‎ 3M
 Color‎‎ Dark Silver
 Elongation‎‎ 14 Percent
 Industries‎‎ Transportation,‎ Specialty Vehicle,‎ Metalworking,‎ Construction,‎ Automotive,‎ Military & Government,‎ General Industrial,‎ Appliance,‎ Electronics,‎ Aerospace
 Length‎‎ 36 Linear Yard
 Length (Metric)‎‎ 32.91 m
 Liner Type‎‎ Easy Release Film
 Maximum Operating Temperature (Celsius)‎‎ 107 Degree Celsius
 Maximum Operating Temperature (Fahrenheit)‎‎ 225 Degree Fahrenheit
 Operating Temperature Range (Celsius)‎‎ -51 to 107 Degree Celsius
 Operating Temperature Range (Fahrenheit)‎‎ -60 to 225 Degree Fahrenheit
 Product Form‎‎ Roll
 Shelf Life in Months (from date of manufacture)‎‎ 18
 Tensile Strength‎‎ 15 lb/in
 Tensile Strength (metric)‎‎ 263 N/100mm
 Total Thickness‎‎ 6.3 mil
 Width‎‎ 1.5 Inch
 Width (Metric)‎‎ 38.1 mm