Revacryl 123 Acrylic Synthomer Acrylics/ Acrylates SEALANT Revacryl 123 A medium particle size, high solids, acrylic emulsion Primarily designed for elastormeric weather barrier coatings where a high level of water resistance is required. It can also be used in caulks, sealants and mastics which require high water and alkali resistance. Medium particle size, high solids, acrylic emulsion. Used in caulks, sealants and mastics. Provides high water and alkali resistance.