FLEX GLUE® is an easy-to-use, super strong, rubberized, waterproof glue that instantly bonds, seals and repairs virtually everything. No need for screws or nails, it's perfect for all types of repairs. Our high-tech formula for FLEX GLUE® CLEAR is the best in clear adhesives. Many other clear glues are water based or solvent based, and can shrink up to 40% at times. Unlike these other brands, FLEX GLUE® CLEAR will not shrink or crack.