This RobustMend Aluminum Waterproof Tape instantly seals water piping or air ventilation permanently! This aluminum foil tape is a super-strong, rubberized, waterproof tape that canpatch, bond, seal and repair virtually everything! It has a butyl rubber acrylic adhesive thatforms an airtight and water-resistant bond for both indoor and outdoor sealing, restoration and HVAC applications. It is speciallyformulated with a thick, flexible, rubberized backing thatconforms to any shape or object! FEATURES HOW TO USE IMPORTANT REMINDERS Specifications Package Includes