Professional aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, chemical masking, and industrial sealing applications. Temperature rated -65°F to 300°F with superior durability and clean removal properties.
3M™ Aluminum Foil Tape 425 is a professional-grade thermal and chemical-resistant foil tape designed for demanding industrial applications. Featuring a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, this tape excels in heat shielding, heat reflecting, chemical masking, and light enhancement applications. The tape withstands exposure to high temperatures up to 300°F (149°C) and maintains superior bonding performance in humid environments, making it ideal for aerospace, automotive, appliance, and general industrial applications.
This versatile foil tape is specifically engineered to dissipate heat over its surface, reducing hot spots and protecting temperature-sensitive materials from thermal damage. The thermally conductive aluminum backing combined with the advanced acrylic adhesive formulation ensures long-term durability while maintaining the ability to remove cleanly after harsh masking applications such as chemical paint stripping and de-paint operations. The tape is resistant to chemicals, moisture, weathering, and UV exposure, providing excellent performance both indoors and outdoors.
3M™ Aluminum Foil Tape 425 is UL Recognized to UL 746C and Classified by UL to UL 723 Class "L" for low flammability rating, meeting FAR 25.853(a) and L-T-80C specifications. With a temperature use range from -65°F to 300°F (-54°C to 149°C), this tape is suitable for refrigerator and freezer coil attachment, seaming and sealing, wiring harness attachment, and numerous other industrial applications. Each roll measures 36 inches wide by 60 yards long with a total thickness of 4.6 mil.
Key Features
- Thermally conductive dead soft aluminum foil backing dissipates heat and protects temperature-sensitive materials
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh applications
- Chemical resistant backing protects surfaces during de-paint and chemical masking operations
- Withstands extreme temperatures from -65°F to 300°F and resists moisture, weathering, and UV exposure
- UL Recognized to UL 746C and Classified to UL 723 Class L for low flammability rating
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 425 |
| Part Number | 425 |
| UPC Code | 00051125854696 |
| 3M ID | 7010337234 |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure-Sensitive) |
| Product Color | Silver |
| Overall Width (Imperial) | 36 inches |
| Overall Width (Metric) | 914.4 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 (Imperial) | 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 |
| Temperature Range | -65°F to 300°F (-54°C to 149°C) |
| Flame Retardant | Yes |
| Number of Adhesive Sides | Single-Sided |
| Shelf Life | 24 Months |
| Smallest Saleable Unit | Roll |
| Packaging | 1 Roll per Case |
| UL Certifications | UL Recognized to UL 746C (File E 122798), Classified by UL to UL 723 Class L |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| Brand | 3M™ |
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