Industrial-grade aluminum foil tape with thermally conductive acrylic adhesive, heat-reflective properties, and chemical resistance for heat shielding, masking, and HVAC applications across aerospace, automotive, and manufacturing industries.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape engineered for demanding applications requiring heat dissipation, thermal protection, and chemical resistance. This linered version of the 3M™ Aluminum Foil Tape 425 features a dead soft aluminum foil backing with a highly engineered pressure-sensitive acrylic adhesive that provides exceptional durability and clean removal after harsh masking applications. The tape is thermally conductive, helping to dissipate heat and improve heating and cooling efficiency while protecting temperature-sensitive materials from thermal damage.
Designed for versatility across multiple industries including aerospace, automotive, appliance, construction, electronics, and general industrial applications, this tape excels in heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations. The aluminum foil backing is dead soft, allowing it to conform easily to curved and uneven surfaces without tearing or cracking. With its advanced acrylic adhesive formulation, the tape maintains a strong and reliable bond while withstanding exposure to high heat, humidity, moisture, weathering, UV radiation, and various solvents.
This product meets rigorous safety and performance standards, being UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 Class "L" for low flammability rating (File R 7311). It can be certified to meet L-T-80C specifications and complies with F.A.R 25.853(a) requirements. The tape operates reliably across an extended temperature range from -65°F to 300°F (-54°C to 149°C), making it suitable for both extreme cold and high-temperature environments. Each case contains 48 rolls, providing substantial inventory for production operations.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating and cooling efficiency
- Dead soft aluminum foil conforms to curved and uneven surfaces without tearing
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Resistant to chemicals, flame, weathering, moisture, and UV exposure for extended outdoor use
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability rating
- Linered design suitable for die-cutting applications and precision manufacturing
- Extended temperature range from -65°F to 300°F (-54°C to 149°C) for extreme environments
- Meets F.A.R 25.853(a) specifications for aerospace and aviation applications
- Case of 48 rolls provides substantial inventory for production operations
Technical Specifications
| Specification |
Value |
| Product Number | 427 |
| Brand | 3M™ |
| Product Color | Silver |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic, Pressure-Sensitive |
| Overall Width (Imperial) | 1 inch |
| Overall Width (Metric) | 2.5 cm |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.9 meters |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Total Tape Thickness without Liner (Imperial) | 4.6 mil |
| Primary Liner Material | Easy Release Film |
| Primary Liner Thickness (Imperial) | 3.1 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Tensile Strength (Imperial) | 28 lb/in |
| Tensile Strength (Metric) | 49 N/100mm |
| Elongation at Break | 6% |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Units per Case | 48 rolls |
| Smallest Saleable Unit | Roll |
| UPC Code | 00051125854504 |
| 3M ID | 7100053632 |
| Specifications Met | FAR 25.853(a), UL 746C, UL 723 Class L |
| Warranty | Standard 3M Industrial Product Warranty |
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