Professional-grade aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, sealing, and thermal management in industrial applications
The 3M™ Aluminum Foil Tape 431 is a high-performance industrial tape engineered for demanding applications across multiple industries. Featuring a dead soft aluminum foil backing with a highly engineered pressure-sensitive acrylic adhesive, this thermally conductive tape excels at heat dissipation and thermal management. The tape's advanced formulation helps protect temperature-sensitive materials by reflecting heat and light while maintaining superior adhesive performance even under harsh conditions. With dimensions of 38mm width and 55 meters length at 3.1 mil thickness, this professional-grade tape comes in convenient cases of 32 rolls for bulk industrial applications.
Designed for superior durability and reliability, the 3M Aluminum Foil Tape 431 withstands exposure to extreme temperatures ranging from -65°F to 300°F (-54°C to 149°C), making it ideal for both indoor and outdoor applications. The highly engineered acrylic adhesive provides long-term durability while remaining removable after masking applications without leaving residue. The tape's dead soft aluminum backing conforms seamlessly to curved and uneven surfaces, ensuring complete coverage and optimal heat reflection. Its classification by UL to UL 723 Class "L" for low flammability rating (File R 7311) and compliance with F.A.R 25.853(a) standards make it suitable for aerospace and aviation applications.
This versatile foil tape excels in heat shielding delicate components, protecting plastic against heat and UV exposure, sealing refrigerator and freezer coils, and enhancing lighting efficiency through superior light reflection. The tape maintains excellent aging performance both indoors and outdoors, with a 24-month shelf life and easy release film liner for convenient application. Industrial professionals trust the 3M Aluminum Foil Tape 431 for critical applications requiring thermal management, moisture barriers, and reliable sealing solutions across automotive, aerospace, HVAC, and manufacturing sectors.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating and cooling efficiency
- Highly engineered acrylic adhesive provides long-term durability with clean removal after masking applications
- Dead soft aluminum foil backing conforms to curved and uneven surfaces for complete coverage
- Withstands extreme temperatures from -65°F to 300°F and exposure to flame, weathering, moisture and UV
- UL 723 Class L low flammability rated and FAR 25.853(a) compliant for aerospace applications
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- Excellent aging performance both indoors and outdoors with 24-month shelf life
- Easy release film liner for convenient application and repositioning
Technical Specifications
| Specification |
Value |
| Product Name | 3M Aluminum Foil Tape 431 |
| Part Number | 431 |
| 3M Product Number | 431 |
| 3M ID | 7100039317 |
| UPC Code | 00051125854238 |
| Overall Width (Metric) | 38 mm |
| Overall Width (Imperial) | 1.5 in |
| Overall Length (Metric) | 55 m |
| Backing (Carrier) Thickness (Imperial) | 1.9 mil |
| Backing (Carrier) Thickness (Metric) | 0.05 mm |
| Back Side Adhesive Thickness (Imperial) | 1.8 mil |
| Back Side Adhesive Thickness (Metric) | 0.05 mm |
| Backing Material | Aluminum Foil - Dead Soft |
| Adhesive Type | Acrylic - Pressure Sensitive |
| Product Color | Silver |
| Primary Liner | Easy Release Film |
| 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 |
| Temperature Use Range | -65°F to 300°F (-54°C to 149°C) |
| Shelf Life | 24 months |
| Smallest Saleable Unit | Roll |
| Case Quantity | 32 Rolls per Case |
| Brand | 3M™ |
| UL Classification | UL 723, Class L for low flammability |
| UL File Number | R 7311 |
| Specifications Met | FAR 25.853(a) |
| Application Type | Heat Shielding, Heat Reflecting, Sealing, Moisture Barrier, Light Reflecting |
| Industry Use | Industrial/Occupational Use Only - Not for Consumer Sale |
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