Aluminum butyl tape is a versatile adhesive tape that combines the properties of aluminum and butyl rubber. The aluminum provides a strong, durable outer layer that is resistant to heat, moisture, and weathering, while the butyl rubber beneath offers a strong, flexible, and waterproof adhesive layer https://wetfree.in/products/keder-max-aluminum-foil-butyl-rubber-tape-4-inch-5-mtr