3M
3M 425 Foil Tape Aluminum Silver 6in x 5yd
Aluminum foil tape for HVAC, automotive and general repair, rated from -65 to 300 degrees Fahrenheit
- ColorSilver
- Withstands extreme heat up to 300°F
- Remains flexible in severe cold down to -65°F
- Suitable for indoor and outdoor environments
- Trusted 3M quality for demanding applications
- 6-inch width covers large seams efficiently
3M 425 Foil Tape Overview
This 3M 425 foil tape is a silver aluminum roll measuring 6 inches wide by 5 yards long. It serves professionals in automotive, aviation, construction, electronics and general maintenance who need a reliable sealing or shielding material. The continuous roll format suits both indoor and outdoor tasks across assembly, manufacturing, safety and warehouse environments.
Temperature Performance Range
The tape operates from -65 degrees F to 300 degrees F, covering extreme cold and high-heat conditions without losing adhesion. This wide range replaces narrower-spec tapes that fail in winter freezes or near engine heat, making the upgrade worthwhile when jobs span both environments.
Professional and Specialty Users
Technicians who require a single tape for diverse indoor and outdoor repairs will find this roll practical. Buyers needing a wider roll, a different adhesive chemistry or a flame-retardant rating not listed here should look at other options.
Highlights
- Withstands extreme heat up to 300°F
- Remains flexible in severe cold down to -65°F
- Suitable for indoor and outdoor environments
- Trusted 3M quality for demanding applications
- 6-inch width covers large seams efficiently
Specifications
| Brand | 3M |
|---|---|
| Color | Silver |
Questions about this item
What surface temperature range can the 3M 425 foil tape withstand?
The tape performs from -65 degrees F to 300 degrees F, so it handles both sub-zero and high-heat HVAC environments.
How do I apply the 6 in wide roll so it seals properly?
Clean the duct surface, press the tape down firmly with a squeegee or roller to remove air pockets, and overlap seams by at least one inch.
When should I replace the foil tape on my ductwork?
Inspect annually and replace any sections that show delamination, adhesive failure, or tears after exposure to the -65 to 300 degree F range.
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