Sikaflex-291, Black, General All-Purpose Fast Cure Marine Adhesive and sealant. Polyurethane sealant for Boats, 3 fl. oz Tube: Amazon.com: Industrial & Scientific
Sika 10.1 fl. oz. Sikaflex All Purpose Non-Sag Construction Sealant Polyurethane in White 7116045 - The Home Depot