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SKU 7010337278
Legacy SKU 70008504758
UPC 00051128998595
Product Number 427

3M™ Aluminum Foil Tape 427 is the go-to foil tape for numerous applications across a broad range of industries. Comprised of a dead soft aluminum foil backing with a highly engineered pressure sensitive acrylic adhesive, it is ideal for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing and de-paint operations.

  • Linered version of 3M™ Aluminum Foil Tape 425
  • Thermally conductive tape helps dissipate heat and improves heating and cooling efficiency to protect temperature sensitive materials
  • Resistant to chemicals to protect surfaces during de-paint process and other chemical masking operations
  • Highly engineered acrylic adhesive provides long term durability, but removes cleanly after harsh masking applications
  • Withstands exposure to flame, weathering, moisture and UV
  • Heat and light reflective tape protects surfaces and enhances lighting efficiency
  • Dead soft aluminum foil backing conforms to curved and uneven surfaces
  • Recognized by UL to UL 746C and Classified by UL to UL 723, Class "L" for low flammability rating
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On it's way to you December 6  


Minimum Order 8 Rolls
Order Increment 8 Rolls
  High Temperature Resistance
  Global Shipping
  Industry Low Price Per Roll
Product Dimensions
Imperial Metric
Width 6 in 152.4 mm
Length 360 yd 329.184 m
Shipping Dimensions
Weight 38 lb
Length 14 in
Width 14 in
Height 7.8 in
Color Silver


  1. What is the purpose of 3M™ Aluminum Foil Tape 427 LT80?

    The primary application for this tape is to seal and patch HVAC ducting.

  2. How strong is the adhesive on this tape?

    The tape has a long-lasting acrylic adhesive that bonds well in both low and high-temperature applications.

  3. Is it easy to cut and apply ?

    Yes, the aluminum backing makes it easy to cut and apply, even by hand or with simple tools.

  4. What are its physical characteristics (size, color, thickness)?

    This product comes as a 6" x 360 yd roll per case. It's silver in color; made from an aluminum foil laminated onto a polyester film. Its total thickness when measured without liner is 4.6 mil.

  5. : Do you provide any warranty/guarantee for this product?

    : We stand behind all our products including 3M™ Aluminum Foil Tape 427 LT80; If you find defects in materials or workmanship within one year from purchase date we will accept returns about it with no questions asked!

For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
Withstands Exposure to High Heat and Humidity

3M™ Aluminum Foil Tape 427 is a reliable solution for heat dissipation and substrate protection in high temperature environments. Its dead soft, thermally conductive aluminum backing reduces hot spots and ensures that delicate parts are shielded from the effects of high temperatures. This tape is a linered version of 3M™ Aluminum Foil Tape 425, making it ideal for die cutting applications. Its highly engineered acrylic adhesive can withstand exposure to high heat and humidity while maintaining a strong and reliable bond. It can also withstand moisture, weathering, UV and solvents, making it suitable for indoor and outdoor use.

Recommended Applications
  • Heat shielding of delicate parts
  • Heat reflecting
  • Masking in chemical paint stripping applications
  • Moisture barrier
  • Light reflecting for light enhancement
  • Chemical milling
  • Seaming and sealing
  • Refrigerator and freezer coil attachment
  • Splicing of thin gauge foils
  • Plastic protection

3M™ Aluminum Foil Tape 427 is UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 "L" for low flammability rating (File R 7311). It can be certified to meet L-T-80C and meets F.A.R 25.853(a). The temperature use range is from -65°F to 300°F (-54°C to 149°C).

Brochures, Catalogs & Data Sheets
  • Pdf   Flyers_3m tapes for metal proc
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