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3M 439 Aluminum Foil Tape
3M 439 Aluminum Foil Tape
3M™ Aluminum Foil Tape 431 and 439L is a 2-mil nominal dead soft aluminum foil with transparent acrylic adhesive for many permanent sealing, holding, splicing or masking applications requiring the protection offered by a foil backing. Foil backing provides an excellent reflective surface for both heat and light. Good aging performance both indoors and outdoors. Low moisture vapor transmission rate offers excellent sealing and patching performance. Best results attained when applied to clean dry surface above 32°F (0°C).
Applications: Seal and patch tears in truck trailers, as well as other outdoor equipment, reflect heat away from sensitive areas, thermal heat conduction, general purpose holding, patching, sealing applications – indoors or out, splicing of thin gauge foils, good maskant in electroplating of aluminum because it will not contaminate the bath, and decorative.
| Filename | Action |
| 3m-431_439L-data-sheet.pdf | [ Download File ] |
| Tech Specs | |
| Backing | Aluminum foil |
| Adhesive Type | Acrylic |
| Total Thickness | 3.1 mils (0.08 mm) |
| Adhesion to Steel | 41 oz./in. width (45 N/100 mm) |
| Tensile Strength | 18 lbs./in. width (315 N/100 mm) |
| Elongation at Break | 3% |
| Temperature Resistance | -65° to 300°F (-54° to 149°C) |
| Colors | Shiny silver |
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