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Silver aluminium foil tape roll 3 in wide 5 yd long

3M

3M 438 Foil Tape Silver 3 in x 5 yd

SKU CH-PYFK-WEFVN

Aluminium foil tape for indoor or outdoor sealing, rated from minus 65 to 300 degrees Fahrenheit

  • ColorSilver
  • Withstands -65 °F to 300 °F for extreme environments
  • 3M 438 series trusted in aerospace and automotive
  • Silver aluminium foil reflects heat and resists moisture
  • Continuous 5-yard roll covers long seams without splices
  • 3-inch width seals ducts and joints in one pass

3M 438 Foil Tape for Industrial Use

This 3M 438 foil tape is an aluminium-backed product designed for assembly, manufacturing and general maintenance across automotive, aviation, construction and electronics sectors. It suits indoor and outdoor environments where a reliable thermal barrier or seal is required. The silver finish provides a clean, professional appearance on visible surfaces.

Compatibility and Surface Preparation

Before ordering, confirm that the application temperature stays within the -65 to 300 degrees F performance range stated for this tape. Ensure the substrate is clean, dry and free of oils or contaminants so the adhesive bonds correctly. Verify that a 3 inch width and 5 yard length match the joint or seam dimensions you plan to cover.

Build Quality and Daily Handling

The continuous roll format allows you to tear or cut exact lengths without waste during installation or repair work. Aluminium foil construction resists flame, moisture and chemical exposure while remaining pliable enough to conform to irregular shapes. The pressure-sensitive adhesive holds immediately on contact, reducing downtime on the job site.

Highlights

  • Withstands -65 °F to 300 °F for extreme environments
  • 3M 438 series trusted in aerospace and automotive
  • Silver aluminium foil reflects heat and resists moisture
  • Continuous 5-yard roll covers long seams without splices
  • 3-inch width seals ducts and joints in one pass

Specifications

Brand3M
ColorSilver

Questions about this item

What comes in the box and what extra items are needed to use the 3M 438 foil tape?

The box contains one continuous roll of 3M 438 foil tape measuring 3 in x 5 yd. No extra items are required; the tape is ready to apply to clean, dry surfaces.

How do I decide which width or length of 3M 438 foil tape to choose?

This listing is for the 3 in x 5 yd roll. Choose this size when you need a three-inch wide tape with five yards of length for sealing or shielding tasks.

What does the 300 degree F maximum temperature mean when the 3M 438 foil tape is used on a real duct or component?

The tape maintains adhesion and integrity up to 300 °F and down to -65 °F, so it stays sealed on hot exhaust ducts or cold outdoor runs without failing.

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