Premium industrial aluminum foil tape with thermally conductive acrylic adhesive, ideal for heat shielding, chemical masking, and sealing applications. Temperature rated -65°F to 300°F, UL certified, 12 rolls per case.
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 combined with a highly engineered acrylic adhesive, this tape delivers exceptional thermal conductivity, chemical resistance, and long-term durability. The tape is specifically designed to dissipate heat effectively, reduce hot spots, and protect temperature-sensitive materials while maintaining a strong, reliable bond even under extreme conditions.
With a maximum operating temperature range from -65°F to 300°F (-54°C to 149°C), this tape excels in heat shielding applications, chemical masking during paint stripping, moisture barrier applications, and light reflection enhancement. The single-sided acrylic adhesive provides superior adhesion to various substrates while removing cleanly after harsh masking applications, making it ideal for temporary and permanent bonding needs. The tape's 4.6 mil total thickness ensures optimal performance without excessive bulk.
This product is UL Recognized to UL 746C and Classified by UL to UL 723 Class L for low flammability rating, meeting rigorous safety standards including FAR 25.853(a) and L-T-80C specifications. Each case contains 12 rolls of 60-yard length tape, providing substantial coverage for industrial operations. The 24-month shelf life ensures extended usability, and the tape's resistance to flame, weathering, moisture, and UV exposure makes it suitable for both indoor and outdoor applications.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency for temperature-sensitive materials
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Chemical resistant design protects surfaces during de-paint processes and chemical masking operations
- Dead soft aluminum foil backing conforms to curved and uneven surfaces for superior coverage
- UL Recognized to UL 746C and Classified to UL 723 Class L with low flammability rating
- Withstands extreme temperatures from -65°F to 300°F with excellent resistance to flame, weathering, moisture and UV
- Heat and light reflective properties enhance lighting efficiency and protect sensitive components
- Single-sided acrylic adhesive for versatile bonding to multiple substrates
- 24-month shelf life ensures extended product usability and reliability
- Ideal for aerospace, automotive, construction, electronics, and general industrial applications
Technical Specifications
| Specification |
Value |
| Product Number | 425 |
| Brand | 3M™ |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic, Single-sided |
| Product Color | Silver |
| Overall Width (Imperial) | 2.5 inches |
| Overall Width (Metric) | 63.5 mm |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.86 meters |
| 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 | 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 |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L for low flammability |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| Shelf Life | 24 months |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 12 rolls |
| UPC | 00051125853644 |
| 3M ID | 7010379571 |
| Number of Adhesive Sides | Single-sided |
| Recommended Applications | Heat shielding, heat reflecting, chemical masking, moisture barrier, light reflection, chemical milling, seaming, sealing, refrigerator/freezer coil attachment, foil splicing, plastic protection |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Application Types | Exterior seams & joints, heat shielding, interior seams & joints, painting & depainting, HVAC sealing, solvent protection, wiring harness attachment |
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