Aluminum foil tape offers a certain degree of high-temperature resistance, though its actual thermal performance depends primarily on the aluminum foil substrate and the type of adhesive used. Aluminum foil itself possesses high heat resistance and excellent thermal reflectivity, making it resistant to deformation or aging in high-temperature environments. However, the adhesive is usually the critical factor determining the tape's actual temperature range, as different adhesive types offer varying levels of thermal performance.

Standard aluminum foil tapes using acrylic adhesives typically have a long-term operating temperature range of -20°C to 120°C and can withstand higher temperatures for short periods, making them suitable for applications such as air conditioning ducts, insulation materials, and general industrial equipment. For high-temperature environments, aluminum foil tapes featuring silicone or other heat-resistant adhesives are available; these can withstand long-term temperatures exceeding 150°C, with some specialized products maintaining excellent adhesion and stability even under more extreme thermal conditions.

It is important to note that while aluminum foil tape is heat-resistant, prolonged exposure to temperatures exceeding the product's rated limits can cause the adhesive layer to age, soften, or lose bonding strength, thereby compromising sealing effectiveness and service life. Therefore, in practical applications, the appropriate aluminum foil tape should be selected based on operating temperatures, the usage environment, and product specifications to ensure stable performance and compliance with engineering requirements.