Fernco 3" Medium Duty No Hub Coupling

3" Medium Duty Coupling No Hub The No-Hub Coupling has a patented shield design that provides maximum transfer of pressure from the clamps to the gasket and pipe. Engineered to connect no-hub cast iron pipe in applications, replacing the less-efficient hub and spigot. The distinctive yellow shield quickly identifies the Heavy-Duty MD Couplings and makes it easier for inspectors. 5/16" hex-head screw applies 80 in.-lbs. of installation torque to the band/shield assembly. Couplings conform to CISPI 310, Factory Mutual CN 1680. Couplings comply with ASTM C564, ASTM C1540, IAPMO file #3198, Commonwealth of Massachusetts CMR-248 and City of New York MEA 253-98-E. Gaskets are made from an elastomeric compound that meets the requirements of ASTM C564. Features: Patented Bi-Directional Shield Design - The shield adjusts to a variety of a pipes diameters and circumferences--eliminating leak paths. The patented, bi-directional corrugation shield seals pressure in both parallel and transverse patterns on the gasket a...