MCI 2022 Sealer is a water-based, water-repelling sealer for concrete, brick, masonry units, etc. It is a ready-to-use product and is made up of a low VOC blend of silane/siloxane emulsions and time-proven Migrating Corrosion Inhibitors (MCI®). MCI-2022 penetrates the concrete, seals its surface, and prevents carbonation and intrusion of water and chlorides. Treated concrete surfaces are fully breathable and their natural moisture-vapor transmissions are not affected. Structural Materials and Restoration Technologies, LLC.