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Waterproof Aluminum Butyl Rubber Tape! This 5cm x 5m roll of industrial-grade tape features a high-strength butyl rubber adhesive and a durable aluminum foil backing, delivering airtight, watertight seals for pipes, metal roofs, windows, and more. Designed to withstand extreme weather (-40°C to 120°C), UV exposure, and heavy rain, it resists cracking, peeling, or melting, ensuring permanent repairs. Perfect for fixing roof cracks, RV awnings, gutter leaks, and plumbing issues, its flexible design conforms to curved and uneven surfaces like tiles, concrete, and glass. Easy to apply—just clean, peel, and press—no extra tools needed!