Premium 3M aluminum foil tape with acrylic adhesive for heat shielding, chemical masking, and sealing. Withstands extreme temperatures -65°F to 300°F, flame-resistant, and ideal for aerospace and industrial applications.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade foil tape engineered for demanding applications across aerospace, automotive, construction, and electronics industries. Featuring a dead soft aluminum foil backing with highly engineered pressure-sensitive acrylic adhesive, this tape delivers exceptional thermal conductivity and heat dissipation capabilities. The tape is specifically designed to protect temperature-sensitive materials while maintaining superior adhesion in extreme conditions, with operating temperatures ranging from -65°F to 300°F (-54°C to 149°C).
This versatile foil tape excels in heat shielding, heat reflecting, chemical masking, light enhancement, and sealing applications. The thermally conductive aluminum backing effectively dissipates heat to reduce hot spots and protect substrates from high-temperature effects. Its chemical-resistant properties make it ideal for de-paint processes and other chemical masking operations, while the highly engineered acrylic adhesive provides long-term durability and reliable bonding even after harsh masking applications. The tape withstands exposure to flame, weathering, moisture, and UV radiation, making it suitable for both indoor and outdoor use.
With dimensions of 12 inches wide by 60 yards long and a total thickness of 4.6 mil, this single roll meets stringent industry standards including UL 746C recognition and UL 723 Class "L" for low flammability rating. The tape is also FAR 25.853(a) compliant and meets L-T-80C specifications, making it suitable for aerospace and high-reliability applications. Its dead soft aluminum backing conforms easily to curved and uneven surfaces, while the 24-month shelf life ensures extended storage capability.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency
- Resistant to chemicals for de-paint process and chemical masking operations
- Highly engineered acrylic adhesive provides long-term durability with clean removal capability
- Withstands extreme temperatures from -65°F to 300°F with flame, weathering, moisture and UV resistance
- UL recognized to UL 746C and classified by UL to UL 723 Class L for low flammability
- Dead soft aluminum backing conforms to curved and uneven surfaces
- FAR 25.853(a) compliant with L-T-80C specifications for aerospace applications
- Heat and light reflective properties enhance lighting efficiency and surface protection
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 425 |
| Part Number | 425 |
| UPC Code | 00051125853699 |
| Overall Width (Imperial) | 12 inches |
| Overall Width (Metric) | 30.5 centimeters |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.9 meters |
| Total Tape Thickness | 4.6 mil |
| Backing (Carrier) Thickness (Imperial) | 2.8 mil |
| Backing (Carrier) Thickness (Metric) | 0.07 millimeters |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 millimeters |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Pressure-Sensitive Acrylic |
| Product Color | Silver |
| Number of Adhesive Sides | Single-sided |
| Tensile Strength (Imperial) | 28 pounds per inch |
| Tensile Strength (Metric) | 49 Newtons per 100 millimeters |
| Elongation at Break | 6 percent |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Flame Retardant | Yes |
| Shelf Life | 24 months |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 1 roll |
| UL Certification | UL Recognized to UL 746C (File E 122798) |
| UL Classification | UL 723 Class L for low flammability (File R 7311) |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| Brand | 3M™ |
| Applications | Heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, refrigerator and freezer coil attachment, splicing, plastic protection |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
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