High-performance aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, sealing, and light reflection in industrial applications. Temperature range -65°F to 300°F with UL 723 low flammability rating.
The 3M™ Aluminum Foil Tape 431 is a high-performance industrial adhesive tape engineered for demanding applications requiring superior heat dissipation and thermal protection. Constructed with dead soft aluminum foil backing and a highly engineered pressure-sensitive acrylic adhesive, this tape excels in heat shielding, heat reflecting, light enhancement, seaming and sealing applications. The thermally conductive aluminum backing effectively dissipates heat across the tape surface to reduce hot spots and protect substrates from high-temperature effects.
This industrial-grade tape features exceptional durability with excellent aging performance both indoors and outdoors. It withstands exposure to high heat, humidity, moisture, weathering, UV radiation, and solvents while maintaining a strong and reliable bond. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, providing versatile coverage for complex geometries. With a temperature use range from -65°F to 300°F (-54°C to 149°C), this tape is suitable for diverse industrial environments and applications.
Classified by UL to UL 723 Class "L" for low flammability rating and meeting F.A.R 25.853(a) specifications, the 3M Aluminum Foil Tape 431 is ideal for aerospace, automotive, HVAC, refrigeration, and manufacturing applications. Each roll measures 1/2 inch wide by 60 yards long with 3.1 mil total thickness, and this case contains 96 rolls for bulk industrial use. The highly engineered acrylic adhesive provides long-term durability while removing cleanly after harsh masking applications.
Key Features
- Thermally conductive aluminum foil backing dissipates heat and improves heating/cooling efficiency
- Dead soft aluminum foil conforms to curved and uneven surfaces for versatile coverage
- Highly engineered acrylic adhesive provides long-term durability and clean removal after masking
- Withstands extreme temperatures from -65°F to 300°F and resists moisture, UV, weathering, and solvents
- UL 723 Class L low flammability rating and FAR 25.853(a) compliance for aerospace applications
Technical Specifications
| Specification |
Value |
| Product Number | 431 |
| Brand | 3M™ |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Pressure-Sensitive Acrylic |
| Overall Width | 0.5 inches (12.7 mm) |
| Overall Length | 60 yards (54.864 meters) |
| Backing Thickness | 1.9 mil (0.05 mm) |
| Adhesive Thickness | 1.8 mil (0.05 mm) |
| Total Thickness | 3.1 mil |
| Tensile Strength | 19 lb/in (33.3 N/100mm) |
| Minimum Operating Temperature | -65°F (-54°C) |
| Maximum Operating Temperature | 300°F (149°C) |
| Product Color | Silver |
| Primary Liner | Easy Release Film |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 96 Rolls |
| Shelf Life | 24 months |
| UL Classification | UL 723 Class L (Low Flammability) |
| Specifications Met | FAR 25.853(a) |
| UPC Code | 00638060407189 |
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