Single seal /Unbalanced/Independent of direction of rotation/Rubber bellows. MG1(109)Mechanical seals of the MG series are amongst the most commonly used. The bellows is not subjected to any torsional stress and its ingenious design incorporates several functions, as seal face, it’s not only a secondary sealing element, but also a drive element. The seal face is driven through the spring and “L” rings. There are no bonded joints and all the face materials are inter-changeable without having to modify any dimensions.Highly recommended for duties with medium containing solids in waste water and sewage applications.