Industrial-grade aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, chemical masking, and sealing applications. Temperature rated -65°F to 300°F with UL certification for low flammability.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade foil tape designed for demanding applications across aerospace, automotive, electronics, and construction industries. Featuring a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, this tape delivers exceptional thermal conductivity and chemical resistance. The tape is specifically engineered to dissipate heat effectively, protecting temperature-sensitive materials while maintaining a strong and reliable bond even under extreme conditions. With a temperature operating range from -65°F to 300°F (-54°C to 149°C), it withstands exposure to high heat, humidity, moisture, weathering, UV radiation, and various solvents.
The 425 foil tape is ideal for heat shielding of delicate parts, heat reflection applications, chemical paint stripping operations, moisture barrier creation, and light enhancement projects. Its dead soft aluminum backing conforms seamlessly to curved and uneven surfaces, making it versatile for complex geometries. The acrylic adhesive provides long-term durability while maintaining clean removal after harsh masking applications, making it perfect for temporary and semi-permanent bonding needs. This single-sided tape comes with a 24-month shelf life and is UL Recognized to UL 746C and Classified by UL to UL 723 Class "L" for low flammability rating.
Each case contains 36 rolls of tape, with each roll measuring 25mm wide by 55 meters long at 4.6 mil total thickness. The tape meets multiple industry standards including FAR 25.853(a), L-T-80C, and SAE-AMS-T-23397 specifications. This product is for industrial and occupational use only and requires proper training for application and safety compliance.
Key Features
- Thermally conductive aluminum foil backing dissipates heat to reduce hot spots and protect temperature-sensitive materials
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Chemical resistant formulation protects surfaces during de-paint processes and chemical masking operations
- Dead soft aluminum backing conforms to curved and uneven surfaces for complex geometry applications
- UL Recognized to UL 746C and Classified by UL to UL 723 Class L for low flammability rating
- Withstands exposure to flame, weathering, moisture, UV radiation, and various solvents
- Heat and light reflective properties enhance lighting efficiency and thermal management
- Temperature operating range from -65°F to 300°F (-54°C to 149°C) for extreme environment use
- Single-sided adhesive application with 24-month shelf life for extended storage
- Meets multiple industry standards including FAR 25.853(a), L-T-80C, and SAE-AMS-T-23397
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 425 |
| Part Number | 425 |
| UPC Code | 00051125853224 |
| 3M ID | 7100059421 |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure-Sensitive) |
| Product Color | Silver |
| Overall Width (Metric) | 25 mm |
| Overall Width (Imperial) | 0.97 in |
| Overall Length (Metric) | 55 m |
| Overall Length (Imperial) | 60 yd |
| Total Tape Thickness | 4.6 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Backing Thickness (Imperial) | 2.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Tensile Strength (Metric) | 49 N/100mm |
| Tensile Strength (Imperial) | 28 lb/in |
| Elongation at Break | 6% |
| Maximum Operating Temperature (Celsius) | 149°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Flame Retardant | Yes |
| Number of Adhesive Sides | Single-sided |
| Shelf Life | 24 Months |
| Smallest Saleable Unit | Roll |
| Units per Case | 36 Rolls |
| 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 | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Applications | Heat Shielding, Heat Reflecting, Chemical Masking, Sealing, Moisture Barrier, Light Enhancement, Chemical Milling, Seaming, Refrigerator and Freezer Coil Attachment, Splicing, Plastic Protection |
| Brand | 3M™ |
| Usage Type | Industrial/Occupational Use Only |
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