Seal "no.5":
NOS leather seal.
Measurements:
OD: 6.25"/ 159,8 mm
ID: 4.5"/ 120 mm
Part number: *C01Q-1190-B
Part name: Seal - front axle hub grease leather oil seal
I bought these locally as NOS leather seals for EUR 10,- each.
EDITED TO CORRECT: this is not Part number *C01Q-1190-B as that cross references to SKF/ CR 49998 with ID 5" and OD 6.25"