3M 421 Dark Silver Lead Foil Tape

3M 421 Dark Silver Lead Foil Tape

  • Electrically and thermally conductive
  • Resists flame, moisture, weather, UV degradation, and many chemicals used in electroplating and anodizing processes
  • Rubber-based adhesive bonds well to a variety of surfaces, including most metals
  • Additional Product Information

Product Description 3M 421 is a 6.3 mil industrial grade metal foil tape used for electroplating, creating radiation and moisture barriers, masking for paint stripping, chemical milling, adding weight to components, and masking x-ray plates. This product features excellent conformability and electrical and thermal conductivity.
Applications Masking applications in electroplating
Radiation barrier
Moisture barrier
Chemical milling
X-ray plate masking
Feature 1 Electrically and thermally conductive
Feature 2 Resists flame, moisture, weather, UV degradation, and many chemicals used in electroplating and anodizing processes
Feature 3 Rubber-based adhesive bonds well to a variety of surfaces, including most metals
Feature 4 Excellent conformability in a variety of application conditions, indoors and out
Feature 5 Performs over a wide variety of temperatures and is heat reflective
Feature 6 Pre-cut shapes save time, money and reduce waste

Color Dark Silver
Total Thickness 6.3 mils
Material/Backing Lead foil
Backing Thickness 4 mils
Adhesive Type Rubber (green)
Adhesive Thickness N/A
Liner None
Tensile Strength 15 lbs/in
Adhesive Strength 45 oz/in
Temperature Performance -60 to 225 °F
Elongation 14 %
UNSPSC 31201533
Country of Origin New Zealand
Origin Criterion N/A
Certification Indicator N/A
Qualification Method N/A
Cage Code 4AJG6
ECCN Number EAR99

Data Sheet
Regulatory Compliance

Storage Condition Humidity Controlled Storage (16C/60F TO 27C/80F & 40-60%RH)
Shelf Life N/A
Return Policy 25% restocking fee
RoHS Status RoHS recast/RoHS 2;China RoHS GB/T 26572-2011
REACH Status Not Compliant
Prop 65 Compliance n/a
CMRT n/a