Modern Stone’s Rapid Seal penetrating sealer is an economical, water based sealer, formulated to provide fast and effective stain repellency to a variety of substrates with little or no change in appearance. It allows for moisture vapor transmission and may also be used as a pre-grouting sealer. Rapid Seal provides strong resistance within 24 hours of applying – full cure in 48 to 72 hours. Greatly reduces cleaning maintenance. Available in Gallon size.