3M 10 oz. White 5200 Marine Adhesive Polyurethane Sealant

3M Marine Adhesive/Sealant 5200 is a one-part polyurethane that chemically reacts with moisture to deliver strong, flexible bonds. It has excellent adhesion to wood, gel coat and fiberglass. It forms a watertight, weather-resistant seal on joints and boat hardware. In addition, its flexibility allows for dissipation of stress caused by shock, vibration, swelling or shrinking.