LOCTITE Waterproof Sealant 2.7-fl oz Gel All Purpose Waterproof, Quick Dry, Flexible Multipurpose Adhesive in the Multipurpose Adhesive department at Lowes.com
Seam Grip WP Seam Sealant and Adhesive | GEAR AID
Water Leak Sealant (High-Pressure & Underwater) – PROSOCO
DAP® Ultra Clear Flexible Waterproof Sealant - 10.1 oz. at Menards®