Premium 3M aluminum foil tape with acrylic adhesive for industrial heat shielding, thermal management, and chemical masking. Thermally conductive, UV-resistant, and suitable for aerospace, automotive, and appliance applications with superior durability.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade thermal and reflective tape engineered for demanding applications across aerospace, automotive, appliance, construction, and electronics industries. Featuring a dead soft aluminum foil backing with highly engineered acrylic adhesive, this linered version of 3M™ Aluminum Foil Tape 425 is specifically designed 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 to reduce hot spots and protect temperature-sensitive substrates from high temperature effects.
The 10 inch by 60 yard roll with 4.6 mil total thickness (2.8 mil backing, 1.8 mil adhesive) delivers exceptional performance across a wide temperature range from -65°F to 300°F (-54°C to 149°C). This tape withstands exposure to moisture, weathering, UV radiation, solvents, and harsh chemicals while maintaining superior bond strength and durability. The easy-release film liner (3.1 mil thick) makes the tape ideal for die-cutting applications, and the clean-removal acrylic adhesive ensures surfaces remain protected without residue after masking operations.
Recognized by UL to UL 746C and classified by UL to UL 723 Class "L" for low flammability rating, 3M Aluminum Foil Tape 427 meets FAR 25.853(a) specifications for aerospace applications. Its versatility extends to refrigerator and freezer coil attachment, splicing of thin gauge foils, plastic protection, moisture barriers, and seaming/sealing applications. The dead soft aluminum backing conforms easily to curved and uneven surfaces, making it suitable for complex industrial applications requiring reliable thermal management and chemical resistance.
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 after masking
- Resistant to chemicals, moisture, weathering, UV radiation, and solvents for extended work life
- UL recognized to UL 746C and classified by UL to UL 723 Class L for low flammability
- Easy-release film liner (3.1 mil) makes tape ideal for die-cutting and precision applications
- Operates reliably across wide temperature range from -65°F to 300°F (-54°C to 149°C)
- Dead soft aluminum conforms to curved and uneven surfaces for complex applications
- Heat and light reflective properties enhance lighting efficiency and protect surfaces
- Linered version suitable for precision die-cutting operations and industrial processing
- Meets FAR 25.853(a) aerospace specifications for critical applications
Technical Specifications
| Specification |
Value |
| Product Number | 427 |
| Brand | 3M™ |
| Product Color | Silver |
| Backing Material | Aluminum Foil (Dead Soft) |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Total Tape Thickness without Liner (Imperial) | 4.6 mil |
| Adhesive Type | Acrylic |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Primary Liner | Easy Release Film |
| Liner Thickness (Imperial) | 3.1 mil |
| Liner Thickness (Metric) | 0.08 mm |
| Overall Width (Imperial) | 10 in |
| Overall Width (Metric) | 254 mm |
| Overall Length (Imperial) | 60 yd |
| Overall Length (Metric) | 54.86 m |
| Tensile Strength (Imperial) | 28 lb/in |
| Tensile Strength (Metric) | 49 N/100mm |
| Elongation at Break | 6% |
| Minimum Operating Temperature (Fahrenheit) | -65 °F |
| Maximum Operating Temperature (Fahrenheit) | 300 °F |
| Maximum Operating Temperature (Celsius) | 149 °C |
| Smallest Saleable Unit | Roll |
| Package Quantity | 1 Roll/Case |
| UPC Code | 00051125855631 |
| 3M ID | 7010337255 |
| Specifications Met | FAR 25.853(a), UL 746C, UL 723 Class L |
| UL Recognition | UL Recognized to UL 746C (File E 122798), Classified by UL to UL 723 Class L |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Military & Government, Specialty Vehicles, Transportation |
| Applications | Exterior Seams & Joints, Heat Shielding, Interior Seams & Joints, Painting & Depainting, Refrigerator and Freezer Coil Attachment, Sealing HVAC & Duct Work, Sealing Plate Edges Against Solvent Penetration, Shielding, Shielding From Engine Heat, Wiring Harness Attachment |
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