Hi Arend,
I can't find any CR seal numbers that match up with the front hub seals,as they are a wierd sized seal.I came across the seal part no. in an old Australian FLA-SEAL catalogue,and it gave a number of A1097,which will probably mean nothing to any U.S. parts store.
The dimensions of the seal are as follows:
O.D. 2.970" diameter(75.45mm)
I.D. 1.797" diameter(45.65mm)
Width 0.250" (6.35mm)
If you can't locate the seals,you should be able to carefully pull the old seals apart,get some engineering felt,and make some new seal rings.
