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3M 421 Lead Foil Tape
3M 421 Lead Foil Tape
3M™ Lead Foil Tape 421 is backed with a rubber adhesive, offering excellent conformability in a variety of application conditions, indoors and out. Good thermal properties and will perform over a wide variety of temperature conditions (-60° to 225°F or -54° to 106°C). It has been used at higher temperatures for shorter duration. It is electrically and thermally conductive.
Applications: electroplating, radiation barrier, moisture barrier, chemical milling, x-ray plate masking, maskant during paint stripping, add weight (balance) to equipment parts (golf clubs, tennis rackets, etc)
| Filename | Action |
| 3m-420-421-data-sheet.pdf | [ Download File ] |
| Tech Specs | |
| Backing | Lead foil |
| Adhesive Type | Rubber (green) |
| Total Thickness | 6.3 mils |
| Adhesion to Steel | 45 oz./in. width (34 N/100 mm) |
| Tensile Strength | 15 lbs./in. width (263 N/100 mm) |
| Elongation at Break | 14% |
| Operating Temperature | -60° to 225°F (-51° to 107°C) |
| Colors | Dark silver |
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