Sealing assemblies for preventing water intrusion into the interior of a casing are provided. In one exemplary implementation, a water-resistant casing comprises a sealing element over-molded on a wall, wherein the sealing element includes a first feature and a second feature. The water-resistant casing includes a top section constrained in a lower position by the first feature of the sealing element. The water-resistant casing further includes a bottom section constrained in an upper position by the second feature of the sealing element.