Industrial-grade aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, chemical masking, and temperature protection up to 300°F, featuring UL certifications and clean removal properties.
3M™ Aluminum Foil Tape 425 is a premium industrial-grade foil tape designed for demanding applications across multiple industries. Comprised of a dead soft aluminum foil backing coated with a highly engineered pressure-sensitive acrylic adhesive, this tape delivers exceptional performance in heat shielding, heat reflecting, chemical masking, and numerous other critical applications. The thermally conductive aluminum backing effectively dissipates heat over the tape surface to reduce hot spots and protect substrates from high temperature effects, making it ideal for protecting temperature-sensitive materials.
This versatile tape withstands exposure to high temperatures up to 300°F (149°C) and maintains strong, reliable bonding even in harsh humidity conditions. The highly engineered acrylic adhesive provides long-term durability while removing cleanly after harsh masking applications, making it perfect for chemical paint stripping operations and de-paint processes. The dead soft aluminum foil backing conforms easily to curved and uneven surfaces, ensuring complete coverage and optimal adhesion. The tape is resistant to chemicals, weathering, moisture, UV exposure, and various solvents, providing excellent work life both indoors and outdoors.
3M™ Aluminum Foil Tape 425 meets stringent industry standards and certifications including UL 746C recognition and UL 723 Class "L" for low flammability rating. It also meets FAR 25.853(a) and L-T-80C specifications, making it suitable for aerospace and aviation applications. With a 24-month shelf life and single-sided adhesive design, this professional-grade tape is the go-to solution for heat shielding of delicate parts, refrigerator and freezer coil attachment, splicing of thin gauge foils, plastic protection, and light enhancement 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 harsh masking
- Resistant to chemicals, weathering, moisture, UV exposure, and solvents for superior protection
- Dead soft aluminum backing conforms to curved and uneven surfaces for complete coverage
- UL certified (UL 746C and UL 723 Class L) and meets FAR 25.853(a) and L-T-80C specifications
- Withstands extreme temperature range from -65°F to 300°F (-54°C to 149°C)
- Heat and light reflective properties enhance lighting efficiency and protect surfaces
- Single-sided adhesive design with 24-month shelf life for extended storage
Technical Specifications
| Specification |
Value |
| Product Number | 425 |
| UPC Code | 00051125853682 |
| Backing Material | Aluminum Foil (Dead Soft) |
| Adhesive Type | Acrylic (Pressure-Sensitive) |
| Overall Width (Imperial) | 10 inches |
| Overall Width (Metric) | 25.4 centimeters |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.9 meters |
| Backing Thickness (Imperial) | 2.8 mil |
| Backing Thickness (Metric) | 0.07 millimeters |
| Adhesive Thickness (Imperial) | 1.8 mil |
| Adhesive Thickness (Metric) | 0.05 millimeters |
| Total Tape Thickness (Imperial) | 4.6 mil |
| Product Color | Silver |
| Tensile Strength (Imperial) | 28 lb/in |
| Tensile Strength (Metric) | 49 N/100mm |
| Elongation at Break | 6% |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Flame Retardant | Yes |
| Number of Adhesive Sides | Single-sided |
| Shelf Life | 24 Months |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 1 Roll |
| Specifications Met | FAR 25.853(a), L-T-80C, SAE-AMS-T-23397, UL 746C, UL 723 Class L |
| Brand | 3M™ |
| Recommended Applications | Heat shielding, Heat reflecting, Chemical masking, Moisture barrier, Light reflecting, Chemical milling, Seaming, Sealing, Refrigerator/Freezer coil attachment, Foil splicing, Plastic protection |
| Suitable Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
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