Premium industrial aluminum foil tape with acrylic adhesive for heat shielding, thermal management, and chemical masking. Temperature rated -65°F to 300°F with UL flame retardant certification.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade foil tape designed for demanding applications across aerospace, automotive, appliance, construction, and electronics industries. Featuring a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, this tape delivers exceptional thermal conductivity and superior adhesion performance. The tape is specifically engineered to dissipate heat effectively, protecting temperature-sensitive materials while maintaining a strong and reliable bond even under extreme conditions.
This versatile tape withstands exposure to high temperatures up to 300°F (149°C) and operates reliably in temperature ranges from -65°F to 300°F (-54°C to 149°C). The thermally conductive properties help reduce hot spots and improve heating and cooling efficiency across various applications. Additionally, the tape is highly resistant to chemicals, making it ideal for de-paint processes and other chemical masking operations where durability and clean removal are essential requirements.
3M™ Aluminum Foil Tape 425 is UL Recognized to UL 746C and Classified by UL to UL 723 Class "L" for low flammability rating, ensuring compliance with stringent safety standards. The tape withstands exposure to flame, weathering, moisture, and UV radiation, providing reliable performance in both indoor and outdoor environments. With a 24-month shelf life and available in convenient 12 roll cases, this professional-grade tape is the go-to solution for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations.
Key Features
- Thermally conductive aluminum foil backing dissipates heat effectively and improves heating/cooling efficiency
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Chemical resistant for de-paint processes and chemical masking operations without surface damage
- Dead soft aluminum foil backing conforms to curved and uneven surfaces for superior coverage
- UL Recognized to UL 746C and Classified UL 723 Class L for low flammability rating with FAR 25.853(a) compliance
- Withstands extreme temperatures from -65°F to 300°F (-54°C to 149°C) with stable bond strength
- Resistant to flame, weathering, moisture, and UV exposure for indoor and outdoor applications
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- Single-sided adhesive design with 4.6 mil total thickness for optimal performance
- 24-month shelf life with convenient 12 roll per case packaging for industrial users
Technical Specifications
| Specification |
Value |
| Product Number | 425 |
| Brand | 3M™ |
| Product Color | Silver |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure-Sensitive) |
| Overall Width (Imperial) | 3.5 inches |
| Overall Width (Metric) | 88.9 millimeters |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.86 meters |
| Total Tape Thickness | 4.6 mil |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 millimeters |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 millimeters |
| Tensile Strength (Imperial) | 28 lb/in |
| Tensile Strength (Metric) | 49 N/100mm |
| Elongation at Break | 6% |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Flame Retardant | Yes |
| Number of Adhesive Sides | Single-sided |
| Shelf Life | 24 Months |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 12 Rolls |
| UPC Code | 00051125855662 |
| 3M ID | 7010379738 |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397, UL 746C, UL 723 Class L |
| UL Recognition | UL Recognized to UL 746C (File E 122798) |
| UL Classification | Classified by UL to UL 723 Class L for low flammability (File R 7311) |
| Applications | Heat shielding, heat reflecting, chemical masking, moisture barrier, light reflecting, 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 & Government, Specialty Vehicles, Transportation |
| Use Environment | Indoor and Outdoor |
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