Professional-grade aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, thermal protection, and reliable sealing in industrial applications. UL 723 Class L rated, operates -65°F to 300°F.
The 3M™ Aluminum Foil Tape 431 is a high-performance industrial foil tape engineered for demanding applications requiring superior heat dissipation, thermal protection, and reliable adhesion. This professional-grade tape features a dead soft aluminum foil backing combined with a highly engineered acrylic adhesive system, making it ideal for heat shielding, heat reflecting, light enhancement, seaming, and sealing applications across aerospace, automotive, HVAC, and manufacturing industries.
Designed to withstand extreme environmental conditions, this thermally conductive tape effectively dissipates heat and improves heating and cooling efficiency while protecting temperature-sensitive materials from thermal damage. The dead soft aluminum foil backing conforms seamlessly to curved and uneven surfaces, ensuring complete coverage and optimal performance. With its superior acrylic adhesive, the tape provides long-term durability and maintains a strong, reliable bond even when exposed to high heat, humidity, moisture, weathering, and UV radiation. The tape meets stringent industry standards including UL 723 Class L for low flammability rating and FAR 25.853(a) specifications.
This 24-roll case provides industrial-grade reliability for large-scale operations and facilities management. The tape operates effectively across a wide temperature range from -65°F to 300°F (-54°C to 149°C), making it suitable for both indoor and outdoor applications. Each roll measures 2 inches wide by 60 yards long with a 3.1 mil total thickness, delivering consistent performance for refrigerator and freezer coil attachment, plastic protection against heat and UV exposure, moisture barriers, and professional-grade sealing and seaming tasks.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency
- Highly engineered acrylic adhesive provides long-term durability and clean removal after masking
- Dead soft aluminum foil conforms to curved and uneven surfaces for complete coverage
- Withstands exposure to flame, weathering, moisture, UV and extreme temperatures
- UL 723 Class L low flammability rating and FAR 25.853(a) compliance for aerospace applications
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- Wide operating temperature range from -65°F to 300°F (-54°C to 149°C)
- Excellent aging performance both indoors and outdoors
- Easy Release Film liner for convenient application and handling
- 24-roll case provides bulk quantity for industrial and facility management operations
Technical Specifications
| Specification |
Value |
| Product Number | 431 |
| Brand | 3M™ |
| Product Color | Silver |
| Backing Material | Aluminum Foil - Dead Soft |
| Adhesive Type | Acrylic - Pressure Sensitive |
| Overall Width (Imperial) | 2 in |
| Overall Width (Metric) | 50.8 mm |
| Overall Length (Imperial) | 60 yd |
| Overall Length (Metric) | 54.86 m |
| Backing Thickness (Imperial) | 1.9 mil |
| Backing Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Total Thickness | 3.1 mil |
| Tensile Strength (Imperial) | 19 lb/in |
| Tensile Strength (Metric) | 33.3 N/100mm |
| Maximum Operating Temperature (Fahrenheit) | 300 ℉ |
| Maximum Operating Temperature (Celsius) | 149 ℃ |
| Minimum Operating Temperature (Fahrenheit) | -65 ℉ |
| Minimum Operating Temperature (Celsius) | -54 ℃ |
| Primary Liner | Easy Release Film |
| Shelf Life | 24 months |
| Smallest Saleable Unit | Roll |
| Package Configuration | 24 Roll/Case |
| UPC Code | 00051125854658 |
| 3M ID | 7010291453 |
| Specifications Met | UL 723 Class L, FAR 25.853(a) |
| Flammability Rating | UL 723 Class L - Low Flammability |
| Application Type | Heat Shielding, Heat Reflecting, Sealing, Seaming, Moisture Barrier |
| Recommended Uses | Heat shielding of delicate parts, refrigerator/freezer coil attachment, plastic protection, light enhancement, moisture barriers |
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