Premium industrial-grade aluminum foil tape with thermally conductive acrylic adhesive for superior heat dissipation, flame resistance, and durability in extreme temperatures from -65°F to 300°F.
The 3M™ Aluminum Foil Tape 431 is a high-performance industrial-grade foil tape engineered for superior heat dissipation and thermal management across diverse industrial applications. This premium tape features a dead soft aluminum foil backing with a highly engineered pressure-sensitive acrylic adhesive that delivers long-term durability while maintaining clean removal after harsh masking applications. The thermally conductive construction helps dissipate heat and improves heating and cooling efficiency to protect temperature-sensitive materials from thermal damage.
This versatile tape is designed for heat shielding of delicate parts, heat reflecting, moisture barriers, light enhancement, and seaming and sealing applications. It withstands exposure to flame, weathering, moisture, and UV radiation, making it ideal for both indoor and outdoor use. The tape conforms perfectly to curved and uneven surfaces due to its dead soft aluminum backing, ensuring complete coverage and maximum adhesive contact. With excellent aging performance and ability to withstand high heat and humidity environments, this tape maintains a strong and reliable bond even in extreme conditions.
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 operates reliably across a temperature range from -65°F to 300°F (-54°C to 149°C). Each case contains 2 rolls of 60-yard length with 5-inch width, providing ample coverage for industrial heat management, refrigeration applications, plastic protection, and specialized thermal applications. The 3.1 mil total thickness combines optimal flexibility with structural integrity for demanding industrial environments.
Key Features
- Thermally conductive dead soft aluminum foil backing for superior heat dissipation and thermal management
- Highly engineered acrylic adhesive provides long-term durability with clean removal after harsh masking applications
- Conforms to curved and uneven surfaces ensuring complete coverage and maximum adhesive contact
- UL 723 Class L low flammability rating and FAR 25.853(a) compliant for aerospace and safety applications
- Withstands extreme temperatures from -65°F to 300°F with excellent resistance to flame, weathering, moisture, and UV exposure
- Heat and light reflective properties enhance lighting efficiency and protect sensitive materials
- Excellent aging performance for reliable indoor and outdoor use with 24-month shelf life
- Ideal for heat shielding, refrigerator coils, plastic protection, and specialized thermal applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Aluminum Foil Tape 431 |
| Part Number | 431 |
| UPC Code | 00051125856485 |
| Color | Silver |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure Sensitive) |
| Overall Width (Imperial) | 5 inches |
| Overall Width (Metric) | 127 millimeters |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.86 meters |
| Backing Thickness (Imperial) | 1.9 mil |
| Backing Thickness (Metric) | 0.05 millimeters |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 millimeters |
| Total Thickness | 3.1 mil |
| Tensile Strength (Imperial) | 19 lb/inch |
| Tensile Strength (Metric) | 33.3 N/100mm |
| Temperature Range (Fahrenheit) | -65°F to 300°F |
| Temperature Range (Celsius) | -54°C to 149°C |
| 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 |
| Smallest Saleable Unit | Roll |
| Rolls Per Case | 2 |
| Shelf Life | 24 months |
| Brand | 3M™ |
| UL Classification | UL 723, Class L (Low Flammability) |
| Specifications Met | FAR 25.853(a) |
| Application Type | Industrial/Occupational Use Only |
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