Premium 3M aluminum foil tape with acrylic adhesive for industrial heat shielding, chemical masking, and HVAC sealing. 48 in x 60 yd roll with thermally conductive backing and UL certification.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape engineered for demanding applications across aerospace, automotive, appliance, construction, electronics, and general industrial sectors. This linered version 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 measures 48 inches wide by 60 yards long with a total thickness of 4.6 mil, providing exceptional coverage for large-scale industrial applications.
The thermally conductive aluminum backing effectively dissipates heat over the tape surface to reduce hot spots and protect substrates from high temperature effects. This construction allows the tape to withstand exposure to extreme temperatures ranging from -65°F to 300°F (-54°C to 149°C), making it suitable for refrigerator and freezer coil attachment, HVAC duct sealing, and other temperature-critical applications. The acrylic adhesive provides long-term durability while maintaining the ability to remove cleanly after harsh masking applications, offering superior performance in chemical paint stripping and de-paint processes.
Fully compliant with UL standards, this tape is UL Recognized to UL 746C and Classified by UL to UL 723 with a Class L rating for low flammability. It meets FAR 25.853(a) specifications and withstands exposure to flame, weathering, moisture, UV radiation, and various solvents. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, while the easy-release film liner facilitates clean application and die-cutting operations.
Key Features
- Thermally conductive dead soft aluminum foil backing dissipates heat effectively
- Highly engineered acrylic adhesive provides long-term durability and clean removal
- Resistant to chemicals, flame, weathering, moisture, and UV exposure
- Temperature range from -65°F to 300°F suitable for extreme conditions
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability
- Conforms to curved and uneven surfaces for versatile applications
- Linered version suitable for die-cutting operations
- Heat and light reflective properties enhance lighting efficiency
- FAR 25.853(a) compliant for aerospace applications
- Ideal for HVAC, refrigeration, chemical masking, and sealing applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M Aluminum Foil Tape 427 |
| Part Number | 427 |
| UPC | 00051125854009 |
| Overall Width | 48 inches (1,219.2 mm) |
| Overall Length | 60 yards (54.86 meters) |
| Total Thickness | 4.6 mil |
| Backing Material | Dead Soft Aluminum Foil |
| Backing Thickness | 2.8 mil (0.07 mm) |
| Adhesive Type | Acrylic Pressure Sensitive |
| Adhesive Thickness | 1.8 mil (0.05 mm) |
| Primary Liner | Easy Release Film |
| Liner Thickness | 3.1 mil (0.08 mm) |
| Product Color | Silver |
| Tensile Strength | 28 lb/in (49 N/100mm) |
| Elongation at Break | 6% |
| Maximum Operating Temperature | 300°F (149°C) |
| Minimum Operating Temperature | -65°F (-54°C) |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L - Low Flammability |
| FAR Compliance | FAR 25.853(a) |
| Smallest Saleable Unit | 1 Roll per Case |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Specialty Vehicles, Transportation |
| Primary Applications | Heat Shielding, Heat Reflecting, Chemical Masking, Sealing, HVAC Duct Work, Refrigeration, Light Enhancement |
| Brand | 3M™ |
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