Premium industrial aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, chemical masking, and sealing applications across aerospace, automotive, and manufacturing industries.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade foil tape engineered for demanding applications across aerospace, automotive, appliance, construction, electronics, and manufacturing industries. This versatile tape features a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, making it ideal for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations. The tape's thermally conductive backing helps dissipate heat effectively, reducing hot spots and protecting substrates from high temperature effects while maintaining strong, reliable bonds.
The 8 inch x 60 yard roll delivers exceptional performance in extreme conditions, withstanding exposure to temperatures ranging from -65°F to 300°F (-54°C to 149°C), along with humidity, moisture, weathering, UV radiation, and solvents. The dead soft aluminum foil backing conforms seamlessly to curved and uneven surfaces, ensuring reliable adhesion in complex applications. With a total tape thickness of 4.6 mil and adhesive thickness of 1.8 mil, this single-sided tape provides optimal balance between durability and flexibility for professional industrial use.
Recognized by UL to UL 746C and classified by UL to UL 723 as Class "L" for low flammability rating, this tape meets FAR 25.853(a), L-T-80C, and SAE-AMS-T-23397 specifications. The highly engineered acrylic adhesive provides long-term durability while removing cleanly after harsh masking applications, making it perfect for temporary and permanent bonding requirements. With a 24-month shelf life and available in convenient 1 roll per case packaging, 3M Aluminum Foil Tape 425 is the go-to solution for professionals requiring reliable thermal and chemical protection.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency for temperature-sensitive materials protection
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Chemical resistant tape protects surfaces during de-paint processes and chemical masking operations
- Dead soft aluminum foil conforms to curved and uneven surfaces for reliable adhesion
- Heat and light reflective properties enhance lighting efficiency and thermal protection
- Withstands extreme temperatures from -65°F to 300°F and resists moisture, weathering, UV exposure, and solvents
- UL recognized to UL 746C and classified to UL 723 Class L for low flammability rating
- Meets FAR 25.853(a), L-T-80C, and SAE-AMS-T-23397 specifications for aerospace and military applications
- Single-sided pressure-sensitive adhesive for easy application without tools or equipment
- 24-month shelf life ensures product reliability and performance consistency
Technical Specifications
| Specification |
Value |
| Product Number | 3M™ Aluminum Foil Tape 425 |
| Part Number | 425 |
| 3M ID | 7100113595 |
| UPC Code | 00051125853361 |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic, Pressure-Sensitive |
| Overall Width (Imperial) | 8 inches |
| Overall Width (Metric) | 20.3 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 |
| Product Color | Silver |
| Number of Adhesive Sides | Single-sided |
| Smallest Saleable Unit | 1 Roll per Case |
| 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 |
| 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 |
| Applications | Heat shielding, Heat reflecting, Chemical masking, Moisture barrier, Light reflecting, Chemical milling, Seaming and sealing, Refrigerator/freezer coil attachment, Foil splicing, Plastic protection |
| Industries Served | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Recommended Use | Exterior seams and joints, Interior seams and joints, Painting and depainting, HVAC duct work sealing, Plate edge sealing against solvent penetration, Shielding from engine heat, Wiring harness attachment |
| Brand | 3M™ |
| Product Type | Industrial Aluminum Foil Tape |
| Intended Use | Industrial/occupational use only - Not for consumer sale or use |
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