Premium thermally conductive aluminum foil tape with acrylic adhesive for heat shielding, masking, and sealing applications across industrial sectors. Withstands extreme temperatures and chemical exposure with superior conformability to curved surfaces.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape engineered for demanding applications across multiple industries including aerospace, automotive, appliance, construction, electronics, and military sectors. This linered version of the 3M™ Aluminum Foil Tape 425 features a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, making it ideal for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations. The tape is thermally conductive, helping to dissipate heat over the surface to reduce hot spots and protect substrates from high temperature effects while maintaining strong and reliable bonds.
This versatile tape is resistant to chemicals, making it perfect for protecting surfaces during de-paint processes and other chemical masking operations. It withstands exposure to flame, weathering, moisture, and UV radiation, ensuring excellent work life both indoors and outdoors. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, providing superior coverage and adhesion. With a temperature use range from -65°F to 300°F (-54°C to 149°C), this tape is suitable for refrigerator and freezer coil attachment, splicing of thin gauge foils, and plastic protection applications.
The product meets rigorous safety and performance standards, being UL Recognized to UL 746C and Classified by UL to UL 723 Class "L" for low flammability rating. Each case contains 24 rolls, with each roll measuring 2 inches wide by 60 yards long with a total thickness of 4.6 mils. The tape features an easy release film liner and is engineered for die-cutting applications, making it suitable for high-volume industrial manufacturing and conversion operations.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves efficiency
- Highly engineered acrylic adhesive provides long-term durability and clean removal
- Resistant to chemicals, moisture, weathering, UV and flame exposure
- Dead soft aluminum backing conforms to curved and uneven surfaces
- UL recognized to UL 746C and classified to UL 723 Class L for low flammability
- Temperature range -65°F to 300°F suitable for extreme environments
- Linered version ideal for die-cutting and high-volume applications
- Heat and light reflective properties enhance lighting efficiency
Technical Specifications
| Specification |
Value |
| Product Number | 427 |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic, Pressure-Sensitive |
| Overall Width | 2 inches (50.8 mm) |
| Overall Length | 60 yards (54.86 meters) |
| Total Tape Thickness | 4.6 mils (0.117 mm) |
| Backing Thickness | 2.8 mils (0.07 mm) |
| Adhesive Thickness | 1.8 mils (0.05 mm) |
| Primary Liner | Easy Release Film, 3.1 mils (0.08 mm) |
| Tensile Strength | 28 lb/in (49 N/100mm) |
| Elongation at Break | 6% |
| Product Color | Silver |
| Temperature Range | -65°F to 300°F (-54°C to 149°C) |
| Minimum Operating Temperature | -65°F (-54°C) |
| Maximum Operating Temperature | 300°F (149°C) |
| Specifications Met | FAR 25.853(a), UL 746C, UL 723 Class L |
| UL Certifications | UL Recognized to UL 746C (File E 122798), Classified to UL 723 L (File R 7311) |
| Unit of Sale | Roll |
| Package Quantity | 24 rolls per case |
| UPC Code | 00051128998540 |
| 3M ID | 7010314257 |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Specialty Vehicles, Transportation |
| Applications | Heat Shielding, Heat Reflecting, Chemical Masking, Light Enhancement, Chemical Milling, Seaming, Sealing, Refrigerator and Freezer Coil Attachment, Splicing, Plastic Protection, HVAC Sealing, De-Paint Operations |
| Use Classification | Industrial/Occupational Use Only - Not for Consumer Sale |
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