Premium thermally conductive aluminum foil tape with acrylic adhesive for industrial heat shielding, masking, and thermal management applications. Temperature rated -65°F to 300°F with UL certification.
3M™ Aluminum Foil Tape 425 LT80 is a premium industrial-grade thermally conductive tape designed for heat dissipation and thermal management applications. Featuring a dead soft aluminum foil backing combined with a highly engineered acrylic adhesive, this tape delivers exceptional performance across diverse industrial applications including heat shielding, heat reflecting, chemical masking, and de-paint operations. The tape's thermally conductive properties help dissipate heat over the surface to reduce hot spots and protect substrates from high temperature effects.
This versatile tape is engineered to withstand extreme environmental conditions including high heat up to 300°F (149°C), humidity, moisture, weathering, UV exposure, and various solvents. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, while the pressure-sensitive acrylic adhesive provides long-term durability and reliable bonding. The tape removes cleanly after harsh masking applications, making it ideal for temporary and semi-permanent installations.
3M™ Aluminum Foil Tape 425 LT80 meets stringent industry standards including UL recognition to UL 746C and UL classification to UL 723 Class "L" for low flammability rating. With a temperature use range from -65°F to 300°F (-54°C to 149°C) and compliance with FAR 25.853(a) and L-T-80C specifications, this tape is trusted across aerospace, automotive, appliance, construction, electronics, and general industrial sectors for critical heat management and protective applications.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and reduces hot spots
- Highly engineered acrylic adhesive provides long-term durability and clean removal
- Resistant to chemicals, moisture, weathering, UV and solvents for outdoor use
- Dead soft aluminum foil conforms to curved and uneven surfaces
- UL recognized and classified for low flammability with FAR 25.853(a) compliance
Technical Specifications
| Specification |
Value |
| Product Number | 425 LT80 |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic, Pressure Sensitive |
| Width | 3 inches (76.2 mm) |
| Length | 60 yards (54.86 meters) |
| Backing Thickness | 2.8 mil (0.07 mm) |
| Adhesive Thickness | 1.8 mil (0.05 mm) |
| Total Tape Thickness | 4.6 mil |
| Tensile Strength | 28 lb/in (49 N/100mm) |
| Elongation at Break | 6% |
| Maximum Operating Temperature | 300°F (149°C) |
| Minimum Operating Temperature | -65°F (-54°C) |
| Temperature Range | -65°F to 300°F (-54°C to 149°C) |
| Flame Retardant | Yes |
| Color | Silver |
| Rolls per Case | 8 rolls |
| Shelf Life | 24 months |
| UPC Code | 00638060407066 |
| 3M ID | 7100229732 |
| Smallest Saleable Unit | Roll |
| Number of Adhesive Sides | Single-sided |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397 |
| UL Certifications | UL 746C (File E 122798), UL 723 Class L (File R 7311) |
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