About Product:Waterproof Butyl Rubberized Sealing Tape with self-adhesive combines the durable industrial repair properties of aluminum and the ease of use of ducting tapes. It has a butyl rubber acrylic adhesive that forms an airtight and water-resistant bond for both indoor and outdoor sealing, restoration and HVAC applications.This tape can confirm well to irregular surface due to its flexible material build and it can adhere to various smooth., textured or rough surface thanks to its strong adhesive backing.