It is shown, that industrial adsorbents – silicagelles KSK-2, KSS-4, KSM-5 and KSM-6P are typical synthetic inorganic polymers and simultaneously represent model capillary-porous solides. The experimental research of dielectric permeability of these polymeric solides in a constant electrical permeability of these polymeric solides in a de electrical field and in wide interval of a moisture content, including hygroscopic and damp condition is carried out. The outcomes are obtained with the help of original device added to classic sorption vacuum weight. It is shown, that the dependence εon a moisture content of concrete silicagel at a constant temperature is determined by a porous structure of a sample, form of connection and condition of an absorbed moisture. The different magnitudes ε at characteristic moisture content silicagelles proceeding from probable mechanisms of polarization of an absorbed moisture and degree of filling of their porous space are explained.