Manufactured using EPDM and moulded into a stepped sleeve, the Fernco Adaptor Coupling provides a universal solution for connecting PVC drainage pipes to cast iron, ductile iron and Supersleve pipes of varying diameters. The sleeve uses two 1.4401 (304) stainless steel clamping bands to secure the two systems together, and is compatible with plastic, cast iron, clay, concrete and steel pipes.