Heavy-duty aluminum foil tape with acrylic adhesive for heat shielding, thermal protection, and sealing in industrial applications. Withstands extreme temperatures, moisture, UV, and flame. 16 rolls per case, 60 yards each.
3M™ Heavy Duty Aluminum Foil Tape 438 is a high-performance industrial foil tape engineered for demanding applications requiring superior heat shielding and thermal protection. This professional-grade tape features a dead soft aluminum foil backing that provides increased effectiveness for heat shielding of delicate parts while maintaining excellent thermal conductivity. The tape is comprised of premium materials including a thermally conductive aluminum backing combined with a highly engineered pressure-sensitive acrylic adhesive that delivers long-term durability and reliable bonding in harsh industrial environments.
The tape withstands exposure to extreme conditions including high temperatures up to 300°F (149°C), flame, weathering, moisture, UV radiation, and various solvents. Its exceptional temperature range from -65°F to 300°F (-54°C to 149°C) makes it ideal for diverse industrial applications. The acrylic adhesive formulation removes cleanly after masking applications without leaving residue, making it suitable for both temporary and permanent installations. With a tensile strength of 59 lb/in and total thickness of 7.2 mil, this tape provides robust performance in sealing, seaming, and thermal protection applications.
This case contains 16 rolls of 2-inch wide tape with 60 yards per roll, providing 960 total yards of coverage. The product is UL Recognized to UL 746C and Classified by UL to UL 723 Class "L" for low flammability rating, meeting F.A.R 25.853(a) standards. Ideal for aerospace, automotive, appliance, construction, electronics, and metalworking industries, this industrial-grade tape is designed for occupational use only by trained professionals.
Key Features
- Heavy duty dead soft aluminum foil backing provides superior heat shielding and thermal conductivity
- Highly engineered acrylic adhesive delivers long-term durability and clean removal after masking applications
- Withstands extreme temperatures from -65°F to 300°F with exceptional thermal resistance
- Resists flame, weathering, moisture, UV radiation, and various solvents for outdoor and indoor use
- UL Recognized to UL 746C and Classified by UL 723 Class L for low flammability rating
- Heat and light reflective properties enhance lighting efficiency and protect surfaces
- Ideal for heat shielding, seaming, sealing, and moisture barrier applications
- Tensile strength of 59 lb/in provides robust performance in demanding industrial environments
Technical Specifications
| Specification |
Value |
| Product Name | 3M Heavy Duty Aluminum Foil Tape 438 |
| Part Number | 438 |
| UPC Code | 00051125853293 |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Acrylic - Pressure Sensitive |
| Product Color | Silver |
| Backing Thickness (Imperial) | 5 mil |
| Backing Thickness (Metric) | 0.13 mm |
| Total Tape Thickness (Imperial) | 7.2 mil |
| Total Tape Thickness (Metric) | 0.18 mm |
| Adhesive Thickness (Metric) | 0.13 mm |
| Overall Width (Imperial) | 2 in |
| Overall Width (Metric) | 50.7 mm |
| Overall Length (Metric) | 54.8 m (60 yards per roll) |
| Tensile Strength (Imperial) | 59 lb/in |
| Tensile Strength (Metric) | 103 N/100mm |
| Elongation at Break | 10% |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Temperature Use Range | -65°F to 300°F (-54°C to 149°C) |
| Shelf Life | 24 months |
| Case Quantity | 16 rolls per case |
| Total Coverage per Case | 960 yards (16 rolls × 60 yards) |
| Smallest Saleable Unit | Roll |
| UL Recognition | UL Recognized to UL 746C (File E 122798) |
| UL Classification | UL 723 Class L - Low Flammability Rating (File R 7311) |
| Regulatory Compliance | Meets F.A.R 25.853(a) |
| Brand | 3M™ |
| Applicable Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Recommended Applications | Heat shielding of delicate parts, heat reflecting, moisture barrier, seaming and sealing, refrigerator and freezer coil attachment, plastic protection against heat and UV exposure |
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