Premium aluminum foil tape with acrylic adhesive for heat shielding and thermal management. Features dead soft aluminum backing, UL 723 Class L rated, operates -65°F to 300°F. Ideal for aerospace, automotive, and industrial applications.
3M™ Aluminum Foil Tape 439 is a high-performance industrial adhesive tape specifically designed for heat shielding, thermal management, and sealing applications across diverse industries. This premium foil tape features a dead soft aluminum foil backing combined with a highly engineered pressure-sensitive acrylic adhesive that provides exceptional thermal conductivity and heat dissipation capabilities. The tape is engineered to protect temperature-sensitive materials by effectively dissipating heat over its surface, reducing hot spots and improving overall heating and cooling efficiency in critical applications.
The 439 model represents a linered version of the 3M™ Aluminum Foil Tape 431, making it particularly suitable for precision die-cutting operations and applications requiring clean removal after masking. With a total thickness of 3.1 mil and an overall width of 3.5 inches, this tape delivers consistent performance across 60 yards of coverage per roll. The highly engineered acrylic adhesive ensures long-term durability while maintaining the ability to remove cleanly after harsh masking applications, making it versatile for both temporary and permanent bonding needs.
This industrial-grade tape withstands exposure to high heat, humidity, moisture, weathering, UV radiation, and solvents, providing reliable performance in demanding indoor and outdoor environments. Classified by UL to UL 723 Class "L" for low flammability rating and meeting F.A.R 25.853(a) standards, the tape operates reliably across a temperature range from -65°F to 300°F (-54°C to 149°C). Each case contains 12 rolls, offering substantial coverage for industrial applications including aerospace, automotive, appliance manufacturing, construction, electronics, and specialty vehicle applications.
Key Features
- Dead soft aluminum foil backing conforms to curved and uneven surfaces
- Highly engineered acrylic adhesive provides long-term durability and clean removal
- Thermally conductive tape dissipates heat and improves heating and cooling efficiency
- Withstands exposure to flame, weathering, moisture, UV and solvents
- UL 723 Class L low flammability rating and F.A.R 25.853(a) compliant
- Linered version suitable for precision die-cutting applications
- Heat and light reflective properties protect surfaces and enhance lighting efficiency
- Temperature range from -65°F to 300°F (-54°C to 149°C)
- Ideal for heat shielding, moisture barriers, and light reflection
- Industrial-grade performance for aerospace, automotive, and appliance applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M Aluminum Foil Tape 439 |
| Part Number | 439 |
| 3M Product Number | 439 |
| 3M ID | 7010337268 |
| UPC | 00051125856751 |
| Backing Material | Dead soft aluminum foil |
| Adhesive Type | Pressure-sensitive acrylic |
| Product Color | Silver |
| Overall Width (Imperial) | 3.5 inches |
| Overall Width (Metric) | 88.9 mm |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.86 meters |
| Backing Thickness (Imperial) | 1.9 mil |
| Backing Thickness (Metric) | 0.05 mm |
| Primary Liner Thickness (Metric) | 0.14 mm |
| Total Tape Thickness without Liner (Imperial) | 3.1 mil |
| Total Tape Thickness without Liner (Metric) | 0.08 mm |
| Tensile Strength (Imperial) | 18 lb/in |
| Tensile Strength (Metric) | 31.5 N/100mm |
| Elongation at Break | 3% |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Shelf Life | 24 months |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 12 rolls |
| UL Classification | UL 723 Class L (low flammability) |
| FAA Compliance | Meets F.A.R 25.853(a) |
| Brand | 3M |
| Application Type | Heat shielding, sealing, EMI/RFI shielding |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military, Specialty Vehicles, Transportation |
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