Premium industrial aluminum foil tape with acrylic adhesive for heat shielding, chemical masking, and thermal management in aerospace, automotive, and manufacturing applications. Temperature range -65°F to 300°F with UL certification.
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. Comprised of a dead soft aluminum foil backing and coated with a highly engineered pressure-sensitive acrylic adhesive, this tape delivers exceptional thermal conductivity and chemical resistance. The tape dissipates heat over its surface to reduce hot spots and protect substrates from high temperatures up to 300°F (149°C), while maintaining a strong and reliable bond even in humid conditions.
This versatile tape is ideal for heat shielding of delicate parts, heat reflection, chemical masking in paint stripping applications, moisture barriers, light enhancement, chemical milling, seaming, sealing, refrigerator and freezer coil attachment, and splicing of thin gauge foils. With a working temperature range from -65°F to 300°F (-54°C to 149°C), it withstands exposure to flame, weathering, moisture, UV rays, and various solvents. The tape features a 24-month shelf life and meets rigorous safety standards including UL 746C recognition and UL 723 classification for low flammability.
Each case contains 2 rolls of tape, with each roll measuring 6 inches wide by 60 yards long and 4.6 mils thick. The single-sided acrylic adhesive provides long-term durability while removing cleanly after harsh masking applications. This product is UL recognized to UL 746C (File E 122798) and classified by UL to UL 723 "L" for low flammability rating, meeting FAR 25.853(a) and L-T-80C specifications.
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
- Resistant to chemicals, flame, weathering, moisture, and UV exposure for excellent indoor and outdoor performance
- Dead soft aluminum foil backing conforms to curved and uneven surfaces for superior coverage
- Heat and light reflective properties enhance lighting efficiency and protect surfaces from thermal damage
- UL recognized to UL 746C and classified by UL to UL 723 Class L for low flammability rating
- Operating temperature range from -65°F to 300°F (-54°C to 149°C) for extreme environment applications
- Meets FAR 25.853(a) and L-T-80C specifications for aerospace and aviation applications
- Single-sided adhesive design with 2.8 mil backing thickness for optimal strength and flexibility
- 24-month shelf life ensures product reliability and consistency for long-term storage
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 425 |
| Part Number | 425 |
| 3M Product Number | 425 |
| 3M ID | 7010337383 |
| UPC Code | 00051128998779 |
| Product Color | Silver |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure-Sensitive) |
| Number of Adhesive Sides | Single-sided |
| Overall Width (Imperial) | 6 inches |
| Overall Width (Metric) | 152.4 mm |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.86 meters |
| Total Tape Thickness | 4.6 mils |
| Backing Thickness (Imperial) | 2.8 mils |
| Backing Thickness (Metric) | 0.07 mm |
| Adhesive Thickness (Imperial) | 1.8 mils |
| 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 |
| Shelf Life | 24 months |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 2 rolls |
| Brand | 3M™ |
| 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 |
| Applicable Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Recommended Applications | Heat shielding, Heat reflecting, Chemical masking, Moisture barrier, Light enhancement, Chemical milling, Seaming, Sealing, HVAC duct work, Refrigerator and freezer coil attachment |
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