Premium industrial aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, masking, and sealing applications. Temperature range -65°F to 300°F with UL certification.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape designed for demanding applications across aerospace, automotive, electronics, and construction industries. Featuring a dead soft aluminum foil backing with highly engineered acrylic adhesive, this linered version of the 3M™ Aluminum Foil Tape 425 is ideal for heat shielding, heat reflecting, chemical masking, light enhancement, and de-paint operations. The tape's thermally conductive properties help dissipate heat over the surface, reducing hot spots and protecting sensitive substrates from high-temperature effects while maintaining superior bonding strength.
This versatile tape combines exceptional durability with chemical resistance, making it perfect for both indoor and outdoor applications. It withstands exposure to flame, weathering, moisture, and UV radiation without compromising performance. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, ensuring complete coverage and reliable sealing. With a temperature use range from -65°F to 300°F (-54°C to 149°C), this tape performs reliably in extreme conditions. The highly engineered acrylic adhesive provides long-term durability while removing cleanly after harsh masking applications, making it an excellent choice for temporary protection during manufacturing and maintenance operations.
UL Recognized to UL 746C and Classified by UL to UL 723 Class "L" for low flammability rating, this tape meets FAR 25.853(a) specifications and is certified for demanding industrial environments. Ideal applications include heat shielding of delicate parts, refrigerator and freezer coil attachment, splicing of thin gauge foils, HVAC duct sealing, and plastic protection. Each roll measures 305mm x 55m with a total thickness of 4.6 mil, providing ample coverage for industrial projects.
Key Features
- Dead soft aluminum foil backing that conforms to curved and uneven surfaces
- Thermally conductive acrylic adhesive dissipates heat and improves efficiency
- Chemical resistant backing protects surfaces during de-paint and masking operations
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability
- Withstands extreme temperatures from -65°F to 300°F with moisture, UV and weathering resistance
- Linered version suitable for die cutting and precision applications
- Long-term durability with clean removal after harsh masking applications
- Heat and light reflective properties enhance lighting efficiency and thermal protection
Technical Specifications
| Specification |
Value |
| Product Number | 427 |
| Brand | 3M™ |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic |
| Overall Width (Metric) | 305 mm |
| Overall Width (Imperial) | 12 inches |
| Overall Length (Metric) | 55 m |
| Overall Length (Imperial) | 60.14 yards |
| Backing Thickness (Metric) | 0.07 mm |
| Backing Thickness (Imperial) | 2.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Total Tape Thickness (Imperial) | 4.6 mil |
| Primary Liner | Easy Release Film |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Primary Liner Thickness (Imperial) | 3.1 mil |
| Tensile Strength (Metric) | 49 N/100mm |
| Tensile Strength (Imperial) | 28 lb/in |
| Elongation at Break | 6% |
| Product Color | Silver |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| UL Certification | UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 Class L |
| FAA Certification | Meets FAR 25.853(a) |
| Units per Case | 1 Roll |
| UPC Code | 00051125853958 |
| 3M ID | 7100053599 |
| Smallest Saleable Unit | Roll |
| Applications | Heat shielding, Heat reflecting, Masking, Sealing HVAC, Exterior seams, Interior seams, Refrigerator coil attachment, Chemical milling, Wiring harness attachment |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Specialty Vehicles, Transportation |
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