Aremco-Seal 613 is single part, gray-pigmented, water-based, glass coating that is used to seal porosity in ceramics and refractories to 1,150°F. It is odorless and contains no VOCs which may affect environment. No outgassing will occur upon curing or during operation. Sealant can be applied by dipping, brushing, or spraying and cleans up prior to curing with warm water.