Sorry mate, I don't know the part numbers of the seal off hand. I took the part numbers/sizes of the bearings, then didn't get any further because looking on the net at the time it was just as cheap to order the kit from
wemoto, particularly as I needed to get some other service bits and pieces at the same time.
They sell all types of seals at
simplybearings. Just use their search tool in the seals section.