Industrial-grade aluminum foil tape with silicone adhesive for extreme temperature applications up to 600°F. Ideal for heat shielding, HVAC sealing, and thermal insulation protection with excellent conformability and flame resistance.
3M™ High Temperature Aluminum Foil Tape 433 is a premium industrial-grade heat shielding tape designed for extreme temperature applications. This dead soft aluminum foil tape features a clear silicone pressure-sensitive adhesive that bonds excellently to a variety of surfaces while maintaining superior performance in high-temperature environments where conventional adhesive tapes fail. The tape can withstand limited exposure up to 600°F (316°C), making it ideal for heat shielding applications such as wrapping thermal insulation, sealing HVAC ductwork, and protecting temperature-sensitive materials.
The thermally conductive properties of this aluminum foil tape help dissipate heat effectively, protecting sensitive components and improving heating and cooling system efficiency. With a dead soft aluminum backing that conforms easily to curved and uneven surfaces, this tape provides excellent flexibility for complex applications. The tape meets stringent flame resistance requirements of F.A.R. 25.853(a) and is UL Recognized (file QQQW2.MH122798), ensuring compliance with aerospace and industrial safety standards.
Each roll measures 23 inches wide by 180 yards long with a 3.6 mil total thickness and 1.6 mil adhesive thickness. The tape is supplied with an easy-release film liner for convenient dispensing. Ideal for aerospace, appliance, automotive, construction, electronics, and general industrial applications, this high-performance tape excels in seaming, splicing, and sealing operations where temperature stability is critical.
Key Features
- Withstands limited exposure up to 600°F (316°C) for extreme heat applications
- Thermally conductive aluminum foil backing dissipates heat and protects temperature-sensitive materials
- Dead soft aluminum conforms easily to curved and uneven surfaces
- Clear silicone pressure-sensitive adhesive bonds to difficult substrates
- Flame resistant - meets F.A.R. 25.853(a) requirements and UL Recognized component
- Improves heating and cooling system efficiency
- Excellent performance range from -65°F to 600°F (-54°C to 316°C)
- Easy-release film liner for convenient dispensing
- Ideal for seaming, splicing, and sealing applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ High Temperature Aluminum Foil Tape 433 |
| Part Number | 433 |
| UPC | 00051138949211 |
| Backing Material | Dead Soft Aluminum Foil |
| Adhesive Type | Silicone Pressure-Sensitive |
| Product Color | Silver |
| Overall Width (Imperial) | 23 inches |
| Overall Width (Metric) | 584.2 mm |
| Overall Length (Imperial) | 180 yards |
| Overall Length (Metric) | 164.59 meters |
| Backing Thickness (Imperial) | 2 mil |
| Backing Thickness (Metric) | 0.05 mm |
| Adhesive Thickness (Imperial) | 1.6 mil |
| Total Tape Thickness (Imperial) | 3.6 mil |
| Total Tape Thickness (Metric) | 0.09 mm |
| Tensile Strength (Imperial) | 20 lb/in |
| Tensile Strength (Metric) | 35 N/100mm |
| Elongation at Break | 3.5% |
| Maximum Operating Temperature (Fahrenheit) | 600°F |
| Maximum Operating Temperature (Celsius) | 316°C |
| Minimum Operating Temperature (Fahrenheit) | -65°F |
| Minimum Operating Temperature (Celsius) | -54°C |
| Primary Liner | Easy Release Film |
| Units per Case | 1 Roll |
| Smallest Saleable Unit | Roll |
| Specifications Met | FAR 25.853(a), UL Recognized (File QQQW2.MH122798) |
| Application | Sealing HVAC & Duct Work, Heat Shielding |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Brand | 3M™ |
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