Sealing Systems Inc. is a national manufacturer and distributor of quality products for sustaining and maintaining municipal water and sewer systems by preventing inflow and infiltration. Our product line includes Infi-Shield external seal which is a flexible EPDM rubber seal for joint sections in manholes, catch basins and many other types of concrete joints. Flex-Seal is an internal brush applied urethane seal which has a remarkable 800% elongation. Stop the treatment of clear water in your collection system by using chimney seals. Get the facts about how our seals will not only save your community money but also gain effective wastewater capacity quickly and affordably.