Multi spring un-balance mechanical seal Type MS210 is developed for universal application. Their compact design makes them suitable for use in all types of Centrifugal Pumps. Torque transmission from retainer shell to seal ring is done through drive lugs. All components are held together by a Snap Ring which makes installation and removal easily. As all parts are interchangeable, so Type MS210 can be converted ‘O’ Ring into ‘Wedge’ by changing only the Seal Ring and the secondary seal. The concept is ideal for stock realization. This seals are factory assembled and dynamically tested.