You don't need to let it cure. Take the pan off, make sure that BOTH faces are clean, put the sealant on the pan face, spread evenly, offer pan up to block. Tighten up all the bolts evenly. When all bolts are in and tightened to correct torque, put correct oil in to the correct level. When finished start car, and drive off to your fave Burger bar and have a snack.