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.
Withstands Exposure to High Heat and Humidity Consisting of a dead soft, thermally conductive aluminum backing, 3M™ Aluminum Foil Tape 427 dissipates heat over the surface of the tape to reduce hot spots and protect the substrate from the effects of high temperatures. It is a linered version of our 3M™ Aluminum Foil Tape 425, making it suitable for die cutting applications. Coated with our highly engineered acrylic adhesive, it is capable of withstanding exposure to high heat and humidity while maintaining a strong and reliable bond. This tape can withstand a variety of moisture, weathering, UV and solvents in order to provide an excellent work life, indoors or out. 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). Temperature use range is from -65° to 300°F (-54° to 149°C).
| Adhesive Type | Acrylic |
| Application | Painting & Depainting, EMI RFI Shielding of Seams, Sealing Plate Edges Against Solvent Penetration, Shielding From Engine Heat |
| Back Side Adhesive Thickness (Imperial) | 1.8 mil |
| Back Side Adhesive Thickness (Metric) | 0.05 mm |
| Backing (Carrier) Material | Aluminum Foil |
| Backing (Carrier) Thickness (Imperial) | 2.8 mil |
| Backing (Carrier) Thickness (Metric) | 0.07 mm |
| Backing Material | Aluminum Foil |
| Brands | 3M™ |
| Elongation at Break | 6.0 % |
| Industries | Aerospace, Automotive, Specialty Vehicle, General Industrial, Military & Government, Transportation, Construction, Appliance, Electronics, Metalworking, Military |
| Maximum Operating Temperature (Celsius) | 149 ℃ |
| Maximum Operating Temperature (Fahrenheit) | 300 ℉ |
| Minimum Operating Temperature (Celsius) | -54 ℃ |
| Minimum Operating Temperature (Fahrenheit) | -65 ℉ |
| Primary Liner | Easy Release Film |
| Primary Liner Thickness (Imperial) | 3.1 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Product Color | Silver |
| Shelf Life | 24 Month, 24 none |
| Smallest Saleable Unit | Roll |
| Specifications Met | FAR 25.853(a) |
| Tensile Strength (Imperial) | 28.0 lb/in |
| Tensile Strength (Metric) | 49 N/100mm, 49 N/100mm, 490 N/cm |
| Total Tape Thickness without Liner (Imperial) | 4.6 mil |
| Total Tape Thickness without Liner (Metric) | 0.12 mm |
| Units per Case | 1.0, 8.0, 24.0, 48.0 |
| Overall Length (Imperial) | 60 yd, 60.14 yd, 180 yd, 360 yd |
| Overall Length (Metric) | 54.86 m, 54.9 m, 55 m, 164.59 m, 329.184 m |
| Overall Width (Imperial) | 1 in, 1.75 in, 1.96 in, 1.968 in, 2 in, 2.5 in, 3 in, 4 in, 5.9 in, 6 in, 6.5 in, 8 in, 9 in, 10 in, 12 in, 13 in, 15.6 in, 16 in, 18 in, 19 in, 21 in, 23.79 in, 24 in, 30 in, 38 in, 48 in |
| Overall Width (Metric) | 2.5 mm, 25.4 mm, 30.5 mm, 33 mm, 44.45 mm, 50 mm, 50.8 mm, 63.5 mm, 76.2 mm, 101.6 mm, 150 mm, 152.4 cm, 165.1 mm, 203.2 cm, 228.6 mm, 254 mm, 305 mm, 400 mm, 406.4 mm, 457.2 mm, 482.6 mm, 533.4 mm, 609.6 mm, 610 cm, 762 mm, 965.2 mm, 1219.2 mm |
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| Backing (Carrier) Thickness (Imperial) | 2.8 mil | |||
| Overall Width (Metric) | 2.5 mm, 25.4 mm, 30.5 mm, 33 mm, 44.45 mm, 50 mm, 50.8 mm, 63.5 mm, 76.2 mm, 101.6 mm, 150 mm, 152.4 cm, 165.1 mm, 203.2 cm, 228.6 mm, 254 mm, 305 mm, 400 mm, 406.4 mm, 457.2 mm, 482.6 mm, 533.4 mm, 609.6 mm, 610 cm, 762 mm, 965.2 mm, 1,219.2 mm | |||
| Overall Width (Imperial) | 1 in, 1.75 in, 1.96 in, 1.968 in, 2 in, 2.5 in, 3 in, 4 in, 5.9 in, 6 in, 6.5 in, 8 in, 9 in, 10 in, 12 in, 13 in, 15.6 in, 16 in, 18 in, 19 in, 21 in, 23.79 in, 24 in, 30 in, 38 in, 48 in | |||
| Backing (Carrier) Thickness (Metric) | 0.07 mm | |||
| Adhesive Type | Acrylic |
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.
3M™ Aluminum Foil Tape 427
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