We have introduced the newly designed FYH Floback seal as a standard feature with our Extra Solid pillow block housings during the last couple of years. The Floback seal works extremely well and it protects the bearing from the dust at least four times better than our previous standard B type seal. We have been switching from the B type seal to the Floback seal size by size starting with the smaller sizes and progressing through to all the larger sizes as well.
We have changed the seals on the UC, NA, and NC style inserts and have started to change the UK style as well. The Floback seal requires a little wider inner ring than our current UK desgin and so we are going to use our current UK inner ring for the L3 seals. To accommodate the wider inner ring the adapter sleeve for our new UK inserts will only be H2300X series. The H300X will be too short and after the change has been made will no longer be offered.