Abstract: An agitator assembly includes a dynamic or rotary seal which has a pusher for mechanically separating the seal members as the agitator is moved into a clean-in-place orientation. There are three embodiments of the invention, with all embodiments including a pusher mounted on the drive shaft so that as the seal is moved with respect to the drive shaft by either moving the drive shaft or the seal, the pusher engages one of the seal members to mechanically separate it from the other seal member. The pusher preferably comprises a shaft mounted “O” ring in two of the embodiments, and a ring shaped and tapered structure in the other embodiment. The embodiments provide for a seal that has springs located within the tank, a seal with an elastomer to provide the spring sealing force, and a seal with springs located outside the tank.