We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver aluminum foil tape roll 4 inches wide 5 yards long

3M

3M 431 Aluminum Foil Tape Silver 5 yd 4 in

SKU CH-ZJNY-7T87H

Aluminium foil tape rated from -65 °F to 300 °F for indoor or outdoor sealing and repair

  • ColorSilver
  • Withstands extreme heat up to 300 °F
  • Remains flexible in cold down to -65 °F
  • Suitable for indoor and outdoor use
  • Trusted 3M brand for reliable performance
  • Continuous roll format for versatile application

3M 431 Aluminum Foil Tape for HVAC

This 3M 431 aluminum foil tape is built for HVAC controls and common assembly tasks across automotive, aviation, construction, electronics and general maintenance. The silver tape handles indoor and outdoor environments with a continuous roll form suited to professional and workshop use.

Simple roll application with temperature limits

The continuous roll allows straightforward hand application to clean, dry surfaces for sealing or joining duties. Performance is rated from -65 degrees F to 300 degrees F; operating outside this range can cause adhesion loss or backing failure.

Verify surface and temperature needs first

Confirm the substrate is free of oil, dust and moisture before ordering so the adhesive bonds correctly. Check that your application stays within the stated -65 degrees F to 300 degrees F window, as the tape is not rated beyond those limits.

Highlights

  • Withstands extreme heat up to 300 °F
  • Remains flexible in cold down to -65 °F
  • Suitable for indoor and outdoor use
  • Trusted 3M brand for reliable performance
  • Continuous roll format for versatile application

Specifications

Brand3M
ColorSilver

Questions about this item

How do I know the tape is holding once I apply it?

The bond is working when the foil lies flat with no wrinkles or lifted edges and the joint stays sealed through temperature swings from -65 to 300 degrees F.

What comes in the package and do I need anything extra?

One continuous roll of 3M 431 aluminum foil tape measuring 4 in x 5 yd is supplied; no other parts are included and a separate knife or scissors is needed to cut lengths.

Why choose the 4 in x 5 yd roll instead of a different width or length?

The 4-inch width covers standard duct seams in a single pass and the 5-yard roll gives enough length for several joints without frequent roll changes.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.