Simmons 177 Single Drop Split Top Well Seal, IronHighlights: Material : Iron Includes : Bushing Grommet Suitable for : Submersible Pump Temperature Rating : 190 Class 25 non toxic lead free painted cast iron 3 4 in molded rubber, 50 durometer Split top plate This well seal is designed for effective seal against pollution and contamination of wells from surface drainage Many state health departments have adopted codes which require the sealing of water wells Boxed