Print Window and Door Flashing Tite Seal Flex TITE SEAL FLEX is a flexible, self-adhesive, weatherproof flashing material, designed for use on window sills and arched windows. Its unique creped surface and rubberized asphalt mastic adhesive allow it to expand and conform to radius or curved windows. TITE SEAL FLEX will adhere to wood, OSB, metal, masonry, vinyl, polyethylene, and foam surfaces. TITE SEAL FLEX is available in a 6"x25' roll Tags: TITE SEALâ„¢ TITE Seal Flex Technical Data Sheet Tite Seal Flex Safefy Data Sheet Related Products Related Products Tite Seal Original Tite Seal Foam Tite Seal Butyl Ultra TITE SEALâ„¢ All Purpose Flashing Roof Deck Seam Tape