Professional-grade thermally conductive aluminum foil tape with acrylic adhesive for industrial heat shielding, chemical masking, and high-temperature applications up to 300°F. UL-rated flame retardant with superior chemical and UV resistance.
3M™ Aluminum Foil Tape 425 is a professional-grade thermally conductive tape designed for demanding industrial applications requiring superior heat dissipation and chemical resistance. Featuring a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, this tape excels in heat shielding, heat reflecting, and chemical masking operations. The tape withstands extreme temperatures ranging from -65°F to 300°F (-54°C to 149°C) while maintaining exceptional bond strength and durability.
This versatile industrial tape is ideal for protecting temperature-sensitive materials, sealing HVAC systems, refrigerator and freezer coil attachment, and de-paint operations. With proven resistance to chemicals, moisture, weathering, and UV exposure, it delivers reliable performance both indoors and outdoors. The tape's thermally conductive properties help dissipate heat over the surface, reducing hot spots and protecting substrates from high-temperature effects. Its flame-retardant characteristics (UL Recognized to UL 746C and Classified to UL 723 Class L) make it suitable for aerospace and safety-critical applications.
The 3M Aluminum Foil Tape 425 comes in convenient 3/4-inch width rolls with 60-yard length, offering exceptional value in bulk packaging of 64 rolls per case. The 4.6 mil total thickness provides optimal balance between conformability to curved surfaces and structural integrity. Whether you're working in automotive manufacturing, aerospace, electronics, construction, or general industrial settings, this professional tape delivers consistent results and long-term reliability.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and reduces hot spots for temperature-sensitive material protection
- 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
- Flame retardant with UL recognition to UL 746C and UL 723 Class L low flammability rating for aerospace and safety applications
- Dead soft aluminum foil conforms to curved and uneven surfaces while withstanding extreme temperatures from -65°F to 300°F
Technical Specifications
| Specification |
Value |
| Product Name | 3M Aluminum Foil Tape 425, LT80 |
| Part Number | 425 LT80 |
| 3M Product Number | 425 |
| 3M ID | 7010337274 |
| UPC | 00051128998458 |
| Backing Material | Aluminum Foil - Dead Soft |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 mm |
| Adhesive Type | Pressure-Sensitive Acrylic |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Overall Width (Imperial) | 0.75 in |
| Overall Width (Metric) | 19.05 mm |
| Overall Length (Imperial) | 60 yd |
| Overall Length (Metric) | 54.86 m |
| 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 |
| Flame Retardant | Yes - UL 746C and UL 723 Class L |
| Product Color | Silver |
| Number of Adhesive Sides | Single-sided |
| Smallest Saleable Unit | Roll |
| Rolls per Case | 64 |
| Shelf Life | 24 Months |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| Brand | 3M |
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