For the liquid impervious sealing of smallest crevices, chinks,
capillaries and/or openings within a housing wall, in particular of
electronic or electrical devices, it is proposed to provide the housing
wall at least in the area of the crevices, chinks, openings or
capillaries with a hydrophobic coating. The advantage of applying a
hydrophobic coating is that certain gas permeability can be maintained,
so that a gas exchange between the interior of the housing and the
environment is possible.