Premium 9-inch x 60-yard aluminum foil tape with thermally conductive acrylic adhesive, ideal for heat shielding, masking, and sealing in industrial applications. UL-recognized with chemical and weather resistance.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape engineered for demanding applications across aerospace, automotive, construction, electronics, and manufacturing industries. Featuring a dead soft aluminum foil backing combined with a highly engineered acrylic adhesive, this linered version of the 3M™ Aluminum Foil Tape 425 is specifically designed for die-cutting applications and provides exceptional thermal conductivity and heat dissipation capabilities. The tape measures 9 inches wide by 60 yards long with a total thickness of 4.6 mil, making it ideal for heat shielding, heat reflecting, chemical masking, light enhancement, and numerous sealing applications.
This versatile tape excels in protecting temperature-sensitive materials by dissipating heat over its surface to reduce hot spots and maintain substrate integrity under high-temperature conditions. The thermally conductive aluminum backing withstands exposure to extreme temperatures ranging from -65°F to 300°F (-54°C to 149°C), making it suitable for both indoor and outdoor applications. The highly engineered acrylic adhesive provides long-term durability while maintaining the ability to remove cleanly after harsh masking applications, ensuring no residue or damage to underlying surfaces.
Recognized by UL to UL 746C and classified by UL to UL 723 Class "L" for low flammability rating, the tape meets FAR 25.853(a) specifications and can be certified to meet L-T-80C standards. It demonstrates exceptional resistance to chemicals, moisture, weathering, UV exposure, and solvents, ensuring reliable performance in demanding industrial environments. The easy-release film liner facilitates smooth application and die-cutting operations, while the dead soft aluminum foil backing conforms effortlessly to curved and uneven surfaces for superior coverage and adhesion.
Key Features
- Thermally conductive dead soft aluminum foil backing dissipates heat and reduces hot spots
- Highly engineered acrylic adhesive provides long-term durability and clean removal
- UL recognized to UL 746C and classified UL 723 Class L for low flammability
- Resistant to chemicals, moisture, weathering, UV exposure and solvents
- Conforms to curved and uneven surfaces for superior coverage and adhesion
- Operating temperature range from -65°F to 300°F (-54°C to 149°C)
- Linered version suitable for die-cutting applications
- Meets FAR 25.853(a) specifications and L-T-80C certification requirements
- Heat and light reflective properties enhance lighting efficiency
- Ideal for aerospace, automotive, construction, electronics and manufacturing industries
Technical Specifications
| Specification |
Value |
| Product Number | 427 |
| Part Number | 427 |
| 3M ID | 7010314229 |
| UPC Code | 00051125853927 |
| Backing Material | Dead Soft Aluminum Foil |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Adhesive Type | Acrylic |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Total Tape Thickness without Liner (Imperial) | 4.6 mil |
| Overall Width (Imperial) | 9 in |
| Overall Width (Metric) | 228.6 mm |
| Overall Length (Imperial) | 60 yd |
| Overall Length (Metric) | 54.86 m |
| Product Color | Silver |
| Elongation at Break | 6% |
| Tensile Strength (Imperial) | 28 lb/in |
| Tensile Strength (Metric) | 49 N/100mm |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Primary Liner | Easy Release Film |
| Primary Liner Thickness (Imperial) | 3.1 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 1 Roll |
| Specifications Met | FAR 25.853(a), UL 746C, UL 723 Class L, L-T-80C |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L - Low Flammability Rating (File R 7311) |
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