The MG Coupling has been the premier underground, no-hub, cast-iron coupling since 1968. It has been uniquely engineered to literally last a life-time! It is guaranteed to be the strongest, most reliable coupling on the market today providing a cost-effective means to secure your underground piping needs. With our patented design, we guarantee the highest resistance to corrosion, as stainless steel is notoriously corroded underground. So, while the times may have changed, our quality has not! *ASTM, FM, IAPMO, and City of LA Approved