Bostik® Marine 940A is a slower skin (30 to 45 minutes) formation version of 940 Fast Set (15 to 20 minutes). Bostik® 940A is formulated to withstand harsh marine environments and has a longer open-time which allows for longer working times, especially on larger applications; is UV resistant (non-yellowing), sandable and paintable. It combines the adhesion / mechanical properties of a urethane, plus the flexibility and UV resistance of a silicone