I was doubting myself so I went out and measured. The bearing and ring require 1.45", and the seal another .5". There's only 1.45" of space in the ends before it hits the axle tube, so yeah, the seals won't fit as it is.
Of course, for all I know they cut off part of the housing end or something, so I can't say for sure that the proper length of the housing end is 1.45", but that's what these are.