Premium industrial aluminum foil tape with thermally conductive backing, acrylic adhesive, and chemical resistance. Ideal for heat shielding, masking, and sealing applications across aerospace, automotive, and manufacturing industries.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape featuring a dead soft aluminum foil backing with highly engineered pressure-sensitive acrylic adhesive. This linered version of 3M™ Aluminum Foil Tape 425 is specifically designed for die-cutting applications and provides exceptional thermal conductivity for heat dissipation and heat reflection. The tape measures 30 inches in width and 60 yards in length with a total thickness of 4.6 mil, making it ideal for numerous industrial applications across aerospace, automotive, appliance, construction, electronics, and manufacturing sectors.
The thermally conductive aluminum backing helps dissipate heat over the surface of the tape to reduce hot spots and protect substrates from high temperature effects. With a temperature operating range from -65°F to 300°F (-54°C to 149°C), this tape withstands exposure to flame, weathering, moisture, and UV radiation. The highly engineered acrylic adhesive provides long-term durability while removing cleanly after harsh masking applications, making it perfect for chemical stripping, de-paint operations, and other demanding industrial processes. The tape is resistant to chemicals, solvents, and moisture, ensuring excellent work life both indoors and outdoors.
Recognized by UL to UL 746C and classified by UL to UL 723, Class "L" for low flammability rating, this tape meets FAR 25.853(a) specifications. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, while the easy-release film liner facilitates die-cutting operations. Applications include heat shielding of delicate parts, heat reflecting, masking in chemical paint stripping, moisture barriers, light reflecting for light enhancement, chemical milling, seaming and sealing, refrigerator and freezer coil attachment, and splicing of thin gauge foils.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and protects temperature-sensitive materials
- Highly engineered acrylic adhesive provides long-term durability and clean removal after harsh applications
- Chemical resistant for de-paint processes and chemical masking operations
- Dead soft aluminum backing conforms to curved and uneven surfaces with ease
- UL recognized and classified for low flammability with temperature range -65°F to 300°F
- Withstands exposure to flame, weathering, moisture, UV radiation, and solvents
- Heat and light reflective properties enhance lighting efficiency and surface protection
- Linered version with easy-release film liner suitable for die-cutting applications
- Meets FAR 25.853(a) specifications for aerospace applications
- Available in 30-inch width by 60-yard length roll configuration
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 427 |
| Part Number | 427 |
| 3M Product Number | 427 |
| 3M ID | 7010314243 |
| UPC | 00051125855365 |
| Backing Material | Aluminum Foil - Dead Soft |
| Adhesive Type | Acrylic - Pressure Sensitive |
| Product Color | Silver |
| Overall Width (Imperial) | 30 inches |
| Overall Width (Metric) | 762 millimeters |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.86 meters |
| Total Tape Thickness (without Liner) | 4.6 mil |
| Backing (Carrier) Thickness (Imperial) | 2.8 mil |
| Backing (Carrier) Thickness (Metric) | 0.07 millimeters |
| Back Side Adhesive Thickness (Imperial) | 1.8 mil |
| Back Side Adhesive Thickness (Metric) | 0.05 millimeters |
| Primary Liner | Easy Release Film |
| Primary Liner Thickness (Imperial) | 3.1 mil |
| Primary Liner Thickness (Metric) | 0.08 millimeters |
| Tensile Strength (Imperial) | 28 pounds per inch |
| Tensile Strength (Metric) | 49 Newtons per 100 millimeters |
| Elongation at Break | 6 percent |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Temperature Use Range | -65°F to 300°F (-54°C to 149°C) |
| Smallest Saleable Unit | Roll |
| Package Configuration | 1 Roll per Case |
| UL Recognition | UL Recognized to UL 746C (File E 122798) |
| UL Classification | Classified by UL to UL 723, Class L for low flammability (File R 7311) |
| Specifications Met | FAR 25.853(a), L-T-80C |
| Industries Served | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Military & Government, Specialty Vehicles, Transportation |
| Primary Applications | Heat Shielding, Heat Reflecting, Chemical Masking, Paint Stripping, Sealing, Seaming, Moisture Barriers, Light Enhancement |
| Recommended Use | Industrial/Occupational Use Only - Not for Consumer Sale or Use |
| Related Product | Linered version of 3M™ Aluminum Foil Tape 425 |
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