Rito Waterstop Construction Industry Sealant Contains No Solvents, Water Or Bitumen. Rito Waterstop Liquid Is A Self-Levelling Sealant For Horizontal Surfaces. After It Has Cured Completely, The Sealant Will Be Impermeable To Water, Bridges Cracks Up To 5Mm And Is Resistant To Natural Ground Water Which Is Aggressive To Concrete.