Seal "no.4":
NOS leather seal.
Measurements:
OD: 4.569"/ 116,05 mm
ID: 3"/ 76,24 mm
Part number: BB-1175-C
Part name: Retainer - rear wheel grease (leather oil seal)
I bought these locally as new rubbers seals for EUR 25,- each.
Mac's Antique Auto Parts list them as follows:
Part# | Price | Description | Additional | Year
BB-1175-C | 21.95 | WHEEL GREASE SEAL | REAR 2 TON TRUCK 4.56" OD TRUCK WITH FULL FLOATING WHEEL AXLE EXCEPT 122" WHEELBASE | 1934-1952