A gasketless waterproof ingress prevention enclosure for electronics wherein the enclosure does not rely on traditional sealing means to restrain water. The enclosure includes a five-sided open bottom air tight cavity comprising a liquid volume fluidly coupled to a gas volume creating a gas-fluid coupling layer, rising in elevation within cavity. Changing cavity pressure equal to rising compressed liquid pressure prevents exposure to said electronic enclosure components to a maximum design depth of 15 feet of water below surface level or a column height of 15 feet of water over the bottom of the enclosure bell bottom, independent of the enclosure's distance below surface grade. The apparatus forms a telescoped and recessed inner chassis assembly in its fully closed position. The prevention enclosure also provides a method for sealing including the steps of gasketless water prevention, electronics mounting, and water damage component protection.