Professional aluminum foil tape with acrylic adhesive for heat shielding, thermal reflection, and chemical masking in demanding industrial applications. UL certified with extended temperature range.
3M™ Aluminum Foil Tape 427 is a professional-grade linered foil tape engineered for demanding industrial applications requiring superior heat dissipation and chemical resistance. Featuring a dead soft aluminum foil backing with a highly engineered acrylic adhesive, this tape excels in heat shielding, thermal reflection, and chemical masking operations. The thermally conductive aluminum backing effectively dissipates heat across the tape surface to reduce hot spots and protect sensitive substrates from high temperature exposure, making it ideal for HVAC systems, refrigeration applications, and aerospace components.
This versatile tape delivers exceptional performance across diverse industries including aerospace, automotive, appliance, construction, electronics, and military applications. The linered version design makes it particularly suitable for die-cutting operations while maintaining clean removal after harsh masking applications. With its highly engineered acrylic adhesive formulation, the tape provides long-term durability and maintains a strong, reliable bond even when exposed to high heat, humidity, moisture, weathering, UV radiation, and various solvents. The tape's superior chemical resistance protects surfaces during de-paint processes and other chemical-intensive operations.
UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 "L" for low flammability rating (File R 7311), this tape meets FAR 25.853(a) specifications and operates reliably across an extended temperature range from -65°F to 300°F (-54°C to 149°C). Each case contains 24 rolls of 50mm width × 55m length with 4.6 mil total thickness, providing comprehensive coverage for industrial masking, sealing, heat shielding, and protective applications.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency
- Highly engineered acrylic adhesive provides long-term durability and clean removal after harsh applications
- Chemical resistant design protects surfaces during de-paint processes and chemical masking operations
- Dead soft aluminum backing conforms to curved and uneven surfaces for superior coverage
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability rating
- Withstands exposure to flame, weathering, moisture, UV radiation, and various solvents
- Linered version design suitable for die-cutting applications
- Extended operating temperature range from -65°F to 300°F (-54°C to 149°C)
- Meets FAR 25.853(a) specifications for aerospace applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 427 |
| Part Number | 427 |
| 3M Product Number | 427 |
| 3M ID | 7010378528 |
| UPC | 00051128998588 |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic |
| Product Color | Silver |
| Overall Width (Metric) | 50 mm |
| Overall Width (Imperial) | 1.968 in |
| Overall Length (Metric) | 55 m |
| Overall Length (Imperial) | 60.14 yd |
| Backing Thickness (Metric) | 0.07 mm |
| Backing Thickness (Imperial) | 2.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Total Tape Thickness (Imperial) | 4.6 mil |
| Primary Liner | Easy Release Film |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Primary Liner Thickness (Imperial) | 3.1 mil |
| Tensile Strength (Metric) | 49 N/100mm |
| Tensile Strength (Imperial) | 28 lb/in |
| 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 |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 24 Rolls |
| UL Certifications | UL Recognized to UL 746C (File E 122798), Classified by UL to UL 723 Class L |
| Specifications Met | FAR 25.853(a) |
| Applications | Heat shielding, Heat reflecting, Chemical masking, Moisture barrier, Light reflection, Chemical milling, Seaming, Sealing, HVAC duct work, Refrigerator and freezer coil attachment, Wiring harness attachment |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Specialty Vehicles, Transportation |
| Brand | 3M™ |
| Product Type | Linered Aluminum Foil Tape |
| Use Type | Industrial/Occupational Use Only |
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