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With the Tesa 63632 universal aluminium tape, you seal insulation, ductwork, and pipes securely and reliably. This 50 mm wide tape features a 30 µm aluminium foil backing that creates a solid barrier against moisture, vapour, and gases. Designed to perform under demanding conditions, it withstands temperatures from -40°C to +160°C and is flame retardant according to din 4102 class B1 and ul 510A standards. The siliconised release liner peels away smoothly, allowing you to conform the tape easily to flat or curved surfaces for durable hvac seals and heat-resistant metal repairs.