A scraping sealing device for cleaning the stems and the bristles of liquid or pasty cosmetic product applicators, comprising a substantially cylindrical body of flexible material, crossed by an axial hole, to be applied to the neck of a container; the body showing a terminal section having a substantially truncated conical layout, wherein the outer wall of the terminal section, which reaches the applicator, forms with the device axis an angle different from 90 degrees, the device wall tapering in the terminal section until null thickness at the the edge is encountered.The device makes an exhaustive cleaning of the stem when the latter is extracted from the bottle. It completely removes the exceeding contents present on the bristles and when the applicator is again inserted into the bottle, the device makes an efficacious hydraulic seal around the stem body, that avoids the product from drying.