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A silver aluminium foil tape roll, 3 inches wide, shiny finish

3M

3M 425 Foil Tape 3 in x 5 yd Silver

SKU CH-136N-S58C9

Silver aluminium foil tape rated from -65 to 300 degrees Fahrenheit for indoor and outdoor sealing tasks

  • ColorSilver
  • Withstands -65 °F to 300 °F extremes
  • Aluminium foil blocks moisture and vapour
  • 3M 425 adhesive bonds to metal and insulation
  • Suits automotive, aviation and construction tasks
  • 3 in × 5 yd roll covers large seams

3M 425 Aluminium Foil Tape

This 3M 425 foil tape is a silver aluminium roll built for assembly, manufacturing, automotive, aviation, construction, electronics and general maintenance. It suits indoor and outdoor environments where a conductive, heat-resistant seal is required. Buyers needing a wider roll or a different adhesive system should look elsewhere.

Temperature range -65 to 300 Degrees F

The tape performs continuously from -65 Degrees F up to 300 Degrees F, giving headroom for high-heat ductwork and sub-zero exposure. It runs out of spec above 300 Degrees F or below -65 Degrees F, so extreme furnace linings or cryogenic seals are outside its capability.

Thermals and power draw

The aluminium backing reflects radiant heat and stays stable across the rated temperature span without degrading. No electrical power is drawn and the tape adds no acoustic noise to the system. Adhesion remains consistent through thermal cycling in normal use.

Highlights

  • Withstands -65 °F to 300 °F extremes
  • Aluminium foil blocks moisture and vapour
  • 3M 425 adhesive bonds to metal and insulation
  • Suits automotive, aviation and construction tasks
  • 3 in × 5 yd roll covers large seams

Specifications

Brand3M
ColorSilver

Questions about this item

Will the 3M 425 foil tape adhere properly to the aged galvanized ductwork I am keeping?

The acrylic adhesive on this 3M 425 tape bonds to clean metal surfaces across a -65 to 300 Degrees F range, so it will stick to existing galvanized ducts if they are free of oil and dust.

How can I verify the 3M 425 tape is sealing correctly after I apply it?

Press the tape firmly with a squeegee to remove air pockets; a continuous silver finish with no wrinkles or gaps indicates the 3 in. wide roll is forming a proper seal.

Does the 3M 425 roll include a liner or dispenser, or must I buy those separately?

The product is supplied as a continuous 3 in. x 5 yd. roll only; no liner, dispenser or cutting tool is included and must be sourced separately.

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