You shouldn't need a sealant after a wax, its just to protect it longer.

Once you have time and the car is dry, wash the car and wax it again just to be safe.

My ride(Cardomain link) : '95 Contour 16V Zetec DOHC, Teal , ATX Born on Sep. 4, 1995 86+ miles *LEDs mods are on their way!*