Industrial-grade aluminum foil tape with thermally conductive backing and acrylic adhesive for heat shielding, masking, and sealing applications. Withstands extreme temperatures up to 300°F with excellent chemical and UV resistance.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade foil tape designed for numerous demanding applications across a broad range of industries. This versatile tape features a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, making it the go-to solution for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations. The thermally conductive aluminum backing effectively dissipates heat over the tape surface to reduce hot spots and protect substrates from high temperature effects.
This professional-grade tape withstands extreme conditions including high heat up to 300°F (149°C), humidity, moisture, weathering, UV exposure, and various solvents while maintaining a strong and reliable bond. The highly engineered acrylic adhesive provides exceptional long-term durability yet removes cleanly after harsh masking applications, making it ideal for temporary holding and protective applications. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, ensuring complete coverage and optimal performance in complex applications.
3M™ Aluminum Foil Tape 425 is UL Recognized to UL 746C and Classified by UL to UL 723 Class L for low flammability rating, meeting FAR 25.853(a) and L-T-80C specifications. Each case contains 2 rolls of 60-yard length, providing ample coverage for industrial applications. This tape is specifically formulated for industrial and occupational use by trained professionals and is not intended for consumer retail sale.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and reduces hot spots for temperature-sensitive material protection
- Highly engineered acrylic adhesive provides long-term durability and clean removal after harsh masking applications
- Resistant to chemicals, moisture, weathering, and UV exposure for reliable performance indoors and outdoors
- Dead soft aluminum foil backing conforms to curved and uneven surfaces for complete coverage
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability rating with FAR 25.853(a) compliance
- Temperature range from -65°F to 300°F (-54°C to 149°C) for extreme environment applications
- Single-sided adhesive design with 24-month shelf life for extended storage
- Heat and light reflective properties enhance lighting efficiency and thermal management
Technical Specifications
| Specification |
Value |
| Product Number | 425 |
| Brand | 3M™ |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic, Pressure-Sensitive |
| Product Color | Silver |
| Overall Width (Imperial) | 4 inches |
| Overall Width (Metric) | 10.2 centimeters |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.9 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 pounds per inch |
| Tensile Strength (Metric) | 49 Newtons per 100 millimeters |
| Elongation at Break | 6 percent |
| 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 | 2 rolls |
| UPC Code | 00051125853132 |
| 3M ID | 7100053631 |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| UL Certifications | UL Recognized to UL 746C (File E 122798), Classified to UL 723 Class L (File R 7311) |
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