Premium 7-inch x 60-yard aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, chemical masking, and industrial applications. UL certified, temperature range -65°F to 300°F, clean removal after masking.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade adhesive tape featuring a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive. This versatile tape is specifically designed for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations across multiple industries. The tape measures 7 inches wide by 60 yards long with a total thickness of 4.6 mils, making it ideal for both large-scale industrial applications and precision work.
The thermally conductive aluminum backing dissipates heat over the tape surface to reduce hot spots and protect substrates from high-temperature effects. With a maximum operating temperature of 300°F (149°C) and minimum of -65°F (-54°C), this tape maintains exceptional performance in demanding environments. The highly engineered acrylic adhesive provides long-term durability and strong, reliable bonding while removing cleanly after harsh masking applications, making it perfect for temporary and permanent installations.
This industrial tape is resistant to chemicals, weathering, moisture, and UV exposure, ensuring excellent work life both indoors and outdoors. UL Recognized to UL 746C and Classified by UL to UL 723 Class "L" for low flammability rating, it meets stringent safety standards including FAR 25.853(a) and L-T-80C specifications. With a 24-month shelf life and single-sided adhesive design, this tape is the go-to solution for aerospace, appliance, automotive, construction, electronics, and general industrial applications requiring reliable thermal and chemical protection.
Key Features
- Thermally conductive aluminum backing dissipates heat and reduces hot spots for temperature-sensitive material protection
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Chemical resistant backing protects surfaces during de-paint processes and chemical masking operations
- Dead soft aluminum foil conforms to curved and uneven surfaces for superior coverage
- Withstands extreme temperatures from -65°F to 300°F with exceptional moisture, weathering, UV and solvent resistance
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability rating
- Heat and light reflective properties enhance lighting efficiency and thermal management
- Meets FAR 25.853(a) and L-T-80C specifications for aerospace and high-performance applications
- Single-sided adhesive design ideal for seaming, sealing, and splicing applications
- 24-month shelf life ensures extended storage capability for industrial operations
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 425 |
| Part Number | 425 |
| UPC | 00051125853262 |
| 3M ID | 7010314221 |
| Color | Silver |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure-Sensitive) |
| Overall Width (Imperial) | 7 inches |
| Overall Width (Metric) | 177.8 mm |
| 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 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| 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 |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L (Low Flammability) |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| Industries Served | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Recommended Applications | Heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, HVAC duct work, refrigerator and freezer coil attachment, splicing thin gauge foils, plastic protection |
| Packaging | 1 Roll per Case |
| Brand | 3M™ |
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