High-performance aluminum foil tape with thermal conductivity and acrylic adhesive for heat shielding, sealing, and industrial masking applications. UL 723 Class L rated, temperature range -65°F to 300°F.
The 3M™ Aluminum Foil Tape 431 is a high-performance industrial adhesive tape engineered for demanding applications across multiple industries. Featuring a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive, this tape delivers exceptional thermal conductivity and heat dissipation properties. The thermally conductive design helps dissipate heat and improves heating and cooling efficiency while protecting temperature-sensitive materials from thermal damage.
This versatile foil tape is specifically designed for heat shielding, heat reflecting, light enhancement, seaming, and sealing applications. The aluminum foil backing conforms seamlessly to curved and uneven surfaces, ensuring complete coverage and reliable adhesion. With a backing thickness of 1.9 mil and acrylic adhesive measuring 1.8 mil, the tape provides optimal balance between flexibility and durability. The tape maintains excellent performance across a wide temperature range from -65°F to 300°F (-54°C to 149°C), making it suitable for both extreme cold and high-heat environments.
The highly engineered acrylic adhesive provides long-term durability while removing cleanly after harsh masking applications, reducing residue and surface damage. Classified by UL to UL 723 Class "L" for low flammability rating and meeting F.A.R 25.853(a) specifications, this tape demonstrates excellent aging performance both indoors and outdoors. It withstands exposure to flame, weathering, moisture, UV radiation, and solvents, ensuring reliable performance in challenging industrial environments. Each case contains one roll measuring 23 inches wide by 60 yards long, providing ample coverage for professional applications.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency
- Highly engineered acrylic adhesive provides long-term durability with clean removal after masking
- Dead soft aluminum foil conforms to curved and uneven surfaces for complete coverage
- Withstands flame, weathering, moisture, UV exposure, and solvents for indoor/outdoor use
- UL 723 Class L low flammability rating and FAR 25.853(a) compliant for aerospace applications
- Excellent aging performance and temperature range from -65°F to 300°F
- Ideal for heat shielding, heat reflecting, light enhancement, and seaming applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M Aluminum Foil Tape 431 |
| Part Number | 431 |
| 3M Product Number | 431 |
| 3M ID | 7100041714 |
| UPC Code | 00051125856447 |
| Color | Silver |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic Pressure-Sensitive |
| Overall Width (Imperial) | 23 inches |
| Overall Width (Metric) | 584.2 mm |
| Overall Length (Metric) | 54.86 meters (60 yards) |
| Backing Thickness (Imperial) | 1.9 mil |
| Backing Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Tensile Strength (Imperial) | 19 lb/in |
| Tensile Strength (Metric) | 33.3 N/100mm |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Primary Liner | Easy Release Film |
| Shelf Life | 24 months |
| Smallest Saleable Unit | 1 Roll per Case |
| Specifications Met | FAR 25.853(a), UL 723 Class L |
| Flammability Rating | UL 723 Class L (Low Flammability) |
| Brand | 3M™ |
| Application Type | Heat Shielding, Heat Reflecting, Sealing, Seaming, Moisture Barrier |
| Use Environment | Industrial/Occupational Use Only |
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