Premium industrial aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, masking, and sealing applications. Withstands extreme temperatures from -65°F to 300°F, offers excellent chemical resistance, and maintains reliable bond in harsh environments. UL recognized and flame-retardant rated.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade foil tape engineered for demanding applications across aerospace, automotive, appliance, construction, electronics, and general industrial sectors. Comprised of dead soft aluminum foil backing with a highly engineered pressure-sensitive acrylic adhesive, this thermally conductive tape effectively dissipates heat and improves heating and cooling efficiency while protecting temperature-sensitive materials. The tape withstands exposure to high temperatures up to 300°F (149°C), humidity, weathering, UV radiation, and various solvents, maintaining a strong and reliable bond throughout its service life.
This versatile foil tape is ideal for heat shielding of delicate parts, heat reflecting applications, chemical masking during paint stripping operations, moisture barriers, light reflection for enhancement, chemical milling, seaming, sealing, and de-paint operations. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, while the highly engineered acrylic adhesive provides long-term durability yet removes cleanly after harsh masking applications. With excellent chemical resistance, it protects surfaces during de-paint processes and other chemical masking operations, making it an essential solution for demanding industrial environments.
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 L-T-80C specifications and FAR 25.853(a) requirements. Each case contains 24 rolls with plastic cores, offering convenient bulk purchasing for high-volume industrial applications. The temperature use range spans from -65°F to 300°F (-54°C to 149°C), making it suitable for both extreme cold and hot environments.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating and cooling efficiency
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Resistant to chemicals, protecting surfaces during de-paint processes and chemical masking operations
- Dead soft aluminum foil conforms to curved and uneven surfaces for superior coverage
- Withstands exposure to flame, weathering, moisture, UV radiation, and solvents for reliable performance
- UL Recognized to UL 746C and Classified by UL to UL 723 Class L for low flammability
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- Temperature range from -65°F to 300°F (-54°C to 149°C) for extreme environment applications
- Meets FAR 25.853(a) and L-T-80C specifications for aerospace and industrial standards
- Single-sided adhesive design with 24 rolls per case in convenient plastic core packaging
Technical Specifications
| Specification |
Value |
| Product Name | 3M Aluminum Foil Tape 425 |
| Part Number | 425 |
| UPC Code | 00051125856416 |
| 3M ID | 7010337263 |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure Sensitive) |
| Product Color | Silver |
| Overall Width (Imperial) | 2 in |
| Overall Width (Metric) | 50.8 mm |
| Overall Length (Imperial) | 60 yd |
| Overall Length (Metric) | 54.86 m |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Total Tape Thickness (Imperial) | 4.6 mil |
| 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 |
| Smallest Saleable Unit | Roll |
| Rolls per Case | 24 Rolls |
| Core Type | Plastic Core |
| Shelf Life | 24 Months |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723, Class L - Low Flammability (File R 7311) |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| Brand | 3M™ |
| Intended Use | Industrial/Occupational Use Only |
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