3M Marine Adhesive Sealant 4000 UV, Black, 295 ml MULTI-PURPOSE MARINE SEALANT: This medium-strength marine sealant bonds portholes, deck fittings, rub rails, screw holes, and stanchion supports while still allowing disassembly. EXCELLENT UV RESISTANCE: A distinct ability to withstand the sun's rays allows it to excel in challenging outdoor industrial, transportation, and construction environments. COLOR STABLE: Maintains its color in applications above and below the water line. FLEXIBLE BONDS: Durable elastomeric adhesion maintains joint movement and withstands stress caused by shock, vibration, swelling and shrinking. PAINTABLE WHEN WET: Forms a skin in 30-60 minutes but can be painted over with water-based paints immediately after application 14316