Premium industrial aluminum foil tape with acrylic adhesive, thermally conductive, chemical resistant, 610mm x 55m roll, UL certified for aerospace and automotive applications.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape engineered for demanding applications across aerospace, automotive, construction, and electronics industries. Featuring a dead soft aluminum foil backing with highly engineered acrylic adhesive, this linered version of the 3M™ Aluminum Foil Tape 425 offers superior thermal conductivity and chemical resistance. The tape measures 610mm in width with 55 meters of length, providing 4.6 mil total thickness for optimal performance in heat shielding, heat reflecting, and chemical masking applications.
Designed to withstand extreme conditions, this thermally conductive tape effectively dissipates heat and improves heating and cooling efficiency while protecting temperature-sensitive materials and substrates. The pressure-sensitive acrylic adhesive ensures long-term durability while maintaining clean removal after harsh masking applications. The tape's dead soft aluminum backing conforms seamlessly to curved and uneven surfaces, making it ideal for complex geometries in appliance, automotive, and aerospace manufacturing.
With UL Recognition to UL 746C and UL Classification to UL 723 Class L for low flammability, this professional-grade tape meets FAR 25.853(a) specifications. It withstands exposure to high heat, humidity, moisture, weathering, UV radiation, and solvents, maintaining reliable performance across a temperature range of -65°F to 300°F (-54°C to 149°C). Perfect for refrigerator and freezer coil attachment, seaming, sealing HVAC ductwork, and de-paint operations.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking
- Dead soft aluminum backing conforms to curved and uneven surfaces for perfect contact
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability rating
- Resistant to chemicals, moisture, weathering, UV exposure, and solvents for extended work life
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- Linered version suitable for die-cutting applications and precision manufacturing
- Temperature range -65°F to 300°F (-54°C to 149°C) for extreme environment performance
Technical Specifications
| Specification |
Value |
| Product Number | 427 |
| Brand | 3M™ |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic, Pressure Sensitive |
| Product Color | Silver |
| Overall Width (Metric) | 610 mm |
| Overall Width (Imperial) | 23.79 in |
| Overall Length (Metric) | 55 m |
| Overall Length (Imperial) | 60.14 yd |
| Total Tape Thickness | 4.6 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Backing Thickness (Imperial) | 2.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.8 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% |
| Minimum Operating Temperature | -65°F (-54°C) |
| Maximum Operating Temperature | 300°F (149°C) |
| Units per Case | 1 Roll |
| Smallest Saleable Unit | Roll |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L - Low Flammability |
| Specifications Met | FAR 25.853(a), L-T-80C |
| 3M ID | 7100055597 |
| UPC | 00051125853774 |
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