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Silver aluminium foil tape roll, six inches wide, five yards long

3M

3M 438 Aluminum Foil Tape Silver 6in x 5yd

SKU CH-V2D9-R7S2Z

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

  • ColorSilver
  • Withstands extreme heat up to 300°F for demanding environments
  • Remains flexible in severe cold down to -65°F
  • 6-inch width covers large seams quickly
  • 5-yard roll provides ample length for multiple tasks
  • Trusted 3M 438 series quality for professional results

3M 438 Aluminum Foil Tape 6in x 5yd

This 3M 438 aluminum foil tape serves automotive, aviation, construction, electronics and general maintenance professionals who need reliable sealing in indoor or outdoor environments. The continuous roll format supports assembly, manufacturing, safety and warehouse tasks where consistent performance matters.

Temperature Range -65 to 300 Degrees F

The tape operates from -65 Degrees F to 300 Degrees F, making this range the critical specification for high-heat or sub-zero applications such as HVAC ductwork, engine compartments or exterior sealing. Performance outside these limits is not supported by the product data.

Easy Installation With Standard Precautions

The pressure-sensitive adhesive bonds on contact, so surfaces must be clean, dry and free of oil for proper adhesion. Wrinkles or trapped air during application can create leak paths, and stretching the foil beyond its natural elasticity may cause it to lift at curved joints.

Highlights

  • Withstands extreme heat up to 300°F for demanding environments
  • Remains flexible in severe cold down to -65°F
  • 6-inch width covers large seams quickly
  • 5-yard roll provides ample length for multiple tasks
  • Trusted 3M 438 series quality for professional results

Specifications

Brand3M
ColorSilver

Questions about this item

What does the 300 °F maximum temperature mean when the tape is applied?

It means the foil and adhesive will maintain their bond and integrity up to 300 °F in service, so the tape remains effective on hot ducts or equipment surfaces.

What standard governs the tape's temperature range and what does it cap in practice?

The tape is rated for continuous use from -65 °F to 300 °F, capping the maximum service temperature at 300 °F and the minimum at -65 °F.

What does the 6 in width require for proper mounting?

The 6 in wide roll needs a clean, dry surface at least 6 in across so the full width makes contact and the acrylic adhesive bonds securely.

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