Slip Stream 24/7 – Global Supply and Distribution Company providing 3M Industrial, Commercial & Safety Solutions
US Spain
SKU 7000049078
Legacy SKU 70006387230
UPC 00051138953058
Product Number 421

This 3M™ Lead Foil Tape 421 was developed as an electrically and thermally conductive tape. This highly conformable tape resists flame, moisture, weather, UV degradation, chemicals and radiation. Mated with an easy-release film liner, this malleable tape can be shaped into complex or detailed patterns or die-cut into specific shapes to meet assembly and manufacturing process needs.

  • Conformable tape resists flame, moisture, weather, UV degradation, and many chemicals
  • Performs over a wide variety of temperature conditions and is heat reflective
  • Heat and light reflective tape protects, insulates and enhances lighting efficiency
  • Can be die-cut into specific shapes for assembly and manufacturing processes
  • The rubber-based adhesive combined with the rugged, durable backing provides long service life
Estimated date of shipment April 4  


Minimum Order 18 Rolls
Order Increment 18 Rolls
Product Dimensions
Imperial Metric
Width 1/2 in 12.7 mm
Length 36 yd 32.91 m
Shipping Dimensions
Weight 24 lb
Length 13.2 in
Width 6.8 in
Height 6.8 in
Color Dark Silver
Brochures, Catalogs & Data Sheets
  • Pdf   Catalogs_3m masking and surfac
For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
Pliable and Conductive Lead Tape
This dark silver, 6.3 mil /0.16 mm lead foil backing is coated with a distinct green rubber adhesive that offers good initial grab and a long-lasting bond. The lead in the 3M™ Lead Foil Tape 421 is a soft metal that offers excellent conformability. The lead foil is very pliable and can be shaped to the most detailed and intricate shapes or patterns. By rubbing the tape down with a smooth-edged plastic piece or similar object, the tape can be made to better conform to the substrate. This is especially important if the tape is to be used as a "thief" in electroplating, where the edges must fully contact the metal base.

This lead foil tape is formulated to be electrically and thermally conductive and carries a strong acid and base resistance, making it ideal for electroplating, as a radiation barrier or x-ray plate masking. Due to the density, weight and malleability of the lead foil, this tape makes an excellent choice for weighting and balancing, particularly for golf clubs where weight and conformability are crucial for balance and club performance.

Application Ideas

Radiation barrier
Moisture barrier
Chemical milling
X-ray plate masking
Add weight and balance to equipment parts, golf clubs, tennis rackets, etc.

Easy and Effective Uses
3M™ Lead Foil Tape 421 can be used as a mask to eliminate the chemical impacts of electroplating, anodizing or chemical milling. It is also used for x-ray masking and radiopacity for x-ray makers. This versatile and reliable tape can also be used as a moisture barrier or for thermo pane window sealing. This heat and light reflective tape resists flame, moisture, weather, UV degradation, chemicals and is thermally conductive to enhance heating and cooling efficiency of electronics, windows and other applications where heat dissipation is desirable. The density of the lead tape also allows it to be used for precise weighting that requires adhering to low energy and other surfaces.

Power your success with our exceptional science and engineering that provides long-lasting performance and successful solutions.   Add to cart