Professional-grade aluminum foil tape with acrylic adhesive for heat shielding, chemical masking, and industrial sealing applications. Thermally conductive, UV resistant, and suitable for temperatures from -65°F to 300°F.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade foil tape engineered for demanding applications across aerospace, automotive, appliance, construction, and electronics industries. Featuring a dead soft aluminum foil backing with highly engineered pressure-sensitive acrylic adhesive, this linered tape is ideal for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations. The tape's thermally conductive properties help dissipate heat and improve heating and cooling efficiency while protecting temperature-sensitive materials from extreme conditions.
This versatile tape withstands exposure to high heat, humidity, moisture, weathering, UV radiation, and solvents, maintaining a strong and reliable bond in both indoor and outdoor environments. With a temperature use range from -65°F to 300°F (-54°C to 149°C), it provides exceptional durability for refrigerator and freezer coil attachment, splicing of thin gauge foils, plastic protection, and moisture barrier applications. The acrylic adhesive removes cleanly after harsh masking applications while maintaining long-term durability and performance.
UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 Class "L" for low flammability rating (File R 7311), this tape meets F.A.R 25.853(a) specifications and can be certified to meet L-T-80C standards. The linered version design makes it suitable for die-cutting applications, providing superior conformability to curved and uneven surfaces. Each roll measures 6.5 inches wide by 180 yards long with a total tape thickness of 4.6 mil, making it an economical solution for high-volume industrial applications.
Key Features
- Dead soft aluminum foil backing conforms to curved and uneven surfaces
- Thermally conductive tape dissipates heat and improves HVAC efficiency
- Highly engineered acrylic adhesive provides long-term durability with clean removal
- Resistant to chemicals, moisture, weathering, UV exposure, and solvents
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability
- Linered version suitable for die-cutting applications
- Heat and light reflective properties protect surfaces and enhance lighting
- Temperature range from -65°F to 300°F (-54°C to 149°C)
- Meets F.A.R 25.853(a) specifications for aerospace applications
- Ideal for heat shielding, masking, sealing, and refrigeration applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M Aluminum Foil Tape 427 |
| Part Number | 427 |
| UPC Code | 00051125854993 |
| 3M ID | 7010337240 |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic - Pressure Sensitive |
| Product Color | Silver |
| Overall Width (Imperial) | 6.5 inches |
| Overall Width (Metric) | 165.1 mm |
| Overall Length (Imperial) | 180 yards |
| Overall Length (Metric) | 164.59 meters |
| Total Tape Thickness | 4.6 mil |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Primary Liner | Easy Release Film |
| Liner Thickness (Imperial) | 3.1 mil |
| 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 | -65°F (-54°C) |
| Maximum Operating Temperature | 300°F (149°C) |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 1 Roll |
| UL Certifications | UL 746C (File E 122798), UL 723 Class L |
| Specifications Met | FAR 25.853(a), L-T-80C |
| Industries Served | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Transportation |
| Recommended Applications | Heat shielding, Heat reflecting, Chemical masking, Moisture barrier, Light reflecting, Chemical milling, Seaming and sealing, Refrigerator/freezer coil attachment, Foil splicing, Plastic protection |
| Brand | 3M |
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