3M Marine Adhesive/Sealant 10-oz in the Marine Hardware department at Lowes.com
Amazon.com: 3M Flexiclear Body Seam Sealer, 08405, Medium-Bodied, Low Modular Sealer, 1/10 gal/10 fl oz Cartridge : Automotive
3M Urethane Seam Sealer, Black - Ideal for sealing interior and exterior automotive seams and joints, 310 ml cartridge, sold by cartridge - Walmart.com
TotalBoat Seal Elastomeric Marine Adhesive Sealant