A tilling implement for use with a farm vehicle includes a frame, a tillingelement attached tothe frame, a bearing assembly configured to allow the tilling element torotate relative to theframe. The bearing assembly can include a first race, a second race spacedapart from the firstrace to define a gap therebetween, a bearing rotatably disposed within the gapto allow relativemovement between the first race and the second race, a seal including aflexible protrusionhaving a distal end that presses against the first race to seal off the gap,and a stop positionedadjacent to the flexible protrusion configured to prevent the distal end ofthe protrusion frombending towards the bearing.
