Premium thermally conductive aluminum foil tape with acrylic adhesive for heat shielding, chemical masking, and industrial sealing applications. UL recognized, operates -65°F to 300°F, ideal for aerospace, automotive, and HVAC applications.
3M™ Aluminum Foil Tape 427 is a premium linered aluminum foil tape engineered for industrial applications requiring superior heat dissipation and chemical resistance. Featuring a dead soft aluminum foil backing with highly engineered acrylic adhesive, this tape excels in heat shielding, thermal reflection, and chemical masking operations. The thermally conductive backing helps dissipate heat across the tape surface, effectively reducing hot spots and protecting temperature-sensitive substrates from high temperature effects.
This versatile tape is specifically designed for demanding applications including HVAC duct sealing, refrigerator and freezer coil attachment, chemical paint stripping masking, light enhancement, chemical milling, and seaming operations. With its superior durability, the tape withstands exposure to harsh environmental conditions including high heat, humidity, moisture, weathering, UV radiation, and various solvents. The acrylic adhesive formulation ensures long-term bond reliability while maintaining clean removal properties after masking applications, making it ideal for temporary holding during manufacturing processes.
UL recognized to UL 746C and classified by UL to UL 723 Class L for low flammability rating, this industrial-grade tape meets FAR 25.853(a) specifications. Operating across a temperature range from -65°F to 300°F (-54°C to 149°C), the 3M Aluminum Foil Tape 427 delivers consistent performance across diverse industrial sectors including aerospace, automotive, construction, electronics, and military applications. Each roll measures 400mm in width with 55 meters of coverage, providing substantial material for large-scale industrial projects.
Key Features
- Thermally conductive dead soft aluminum foil backing dissipates heat and reduces hot spots
- Highly engineered acrylic adhesive provides long-term durability with clean removal properties
- Resistant to chemicals, moisture, weathering, UV radiation, and solvents
- UL recognized to UL 746C and classified UL 723 Class L for low flammability
- Operates across wide temperature range from -65°F to 300°F (-54°C to 149°C)
- Linered design with easy release film backing suitable for die-cutting applications
- Heat and light reflective properties enhance lighting efficiency and thermal protection
- Conforms to curved and uneven surfaces for versatile application coverage
- Meets FAR 25.853(a) specifications for aerospace applications
- Ideal for HVAC sealing, refrigeration coil attachment, and paint stripping masking
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 427 |
| Part Number | 427 |
| UPC Code | 00051125853989 |
| Color | Silver |
| Overall Width (Metric) | 400 mm |
| Overall Width (Imperial) | 15.6 in |
| Overall Length (Metric) | 55 m |
| Overall Length (Imperial) | 60.14 yd |
| Backing Material | Dead Soft Aluminum Foil |
| Backing Thickness (Metric) | 0.07 mm |
| Backing Thickness (Imperial) | 2.8 mil |
| Total Tape Thickness without Liner (Imperial) | 4.6 mil |
| Adhesive Type | Acrylic |
| Adhesive Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Primary Liner | Easy Release Film |
| Liner Thickness (Metric) | 0.08 mm |
| 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 ℉ |
| Minimum Operating Temperature (Celsius) | -54 ℃ |
| Maximum Operating Temperature (Fahrenheit) | 300 ℉ |
| Maximum Operating Temperature (Celsius) | 149 ℃ |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L for Low Flammability |
| Specifications Met | FAR 25.853(a), L-T-80C |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 1 Roll |
| Brand | 3M™ |
| Recommended Applications | Heat shielding, heat reflecting, chemical masking, moisture barrier, light reflecting, chemical milling, seaming and sealing, refrigerator and freezer coil attachment, splicing of thin gauge foils, plastic protection |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Military & Government, Specialty Vehicles, Transportation |
| Application Types | 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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