- amazing-saving, United States
- Jun 7th
Flex Seal™ is liquid rubber that lets you create a flexible barrier to seal, protect and stop leaks fast! Simply brush on, roll, dip or pour and the liquid dries to create a lightweight, water-tight rubberized coating that seals out air, water and moisture. The non-toxic, non-flammable formula has no harmful vapors and is UV, chemical and mildew-resistant.