Premium thermally conductive aluminum foil tape with acrylic adhesive for industrial heat shielding, masking, and sealing applications. Withstands extreme temperatures, chemicals, and UV exposure with clean removal properties.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape designed for demanding applications across aerospace, automotive, appliance, construction, electronics, and military industries. Featuring a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, this linered version of 3M™ Aluminum Foil Tape 425 offers exceptional versatility for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations. The tape's thermally conductive properties effectively dissipate heat and reduce hot spots, protecting temperature-sensitive materials while maintaining superior bond strength even under high heat and humidity conditions.
This professional-grade tape withstands extreme environmental exposure including flame, weathering, moisture, UV radiation, and harsh chemical solvents, making it suitable for both indoor and outdoor applications. With a temperature operating range from -65°F to 300°F (-54°C to 149°C), the 3M™ Aluminum Foil Tape 427 delivers reliable performance in refrigeration systems, HVAC ductwork, wiring harness attachment, and delicate component protection. The acrylic adhesive formulation ensures long-term durability while removing cleanly after harsh masking applications, preventing substrate damage and reducing cleanup time.
UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 Class L for low flammability rating, this tape meets stringent safety standards including FAR 25.853(a) certification. Each case contains 24 rolls of 2-inch width by 60-yard length, providing substantial coverage for large-scale industrial projects. The dead soft aluminum backing conforms seamlessly to curved and uneven surfaces, while the easy-release film liner facilitates smooth application and die-cutting operations.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and protects temperature-sensitive materials
- Highly engineered acrylic adhesive provides long-term durability and clean removal after harsh applications
- Resistant to chemicals, moisture, weathering, UV radiation, and flame exposure
- Dead soft aluminum backing conforms to curved and uneven surfaces for seamless application
- UL Recognized and Classified for low flammability with FAR 25.853(a) certification
- Operates reliably across -65°F to 300°F temperature range
- Linered version suitable for die-cutting and precision applications
- Ideal for heat shielding, heat reflecting, masking, sealing, and de-paint operations
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 427 |
| Part Number | 427 |
| UPC Code | 00051125853705 |
| 3M ID | 7010314226 |
| Backing Material | Dead Soft Aluminum Foil |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Adhesive Type | Acrylic Pressure-Sensitive |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Total Tape Thickness without Liner (Imperial) | 4.6 mil |
| Width (Imperial) | 2 inches |
| Width (Metric) | 50.8 mm |
| Length (Imperial) | 60 yards |
| Length (Metric) | 54.86 meters |
| Primary Liner | 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 |
| Product Color | Silver |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 24 Rolls |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L - Low Flammability |
| Specifications Met | FAR 25.853(a) |
| Brand | 3M™ |
| 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, De-paint Operations, HVAC Sealing, Refrigerator Coil Attachment |
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