Volvo c300 portal axle bearings/seals
bearings:

Drive gear (upper/small gear)

SKF/FAG 6210 (single row radial ball, open) - dims: 50x90x20
INA BK4520 (drawn cup closed needle bearing) - dims: 45x52x20

Driven gear (lower/large gear)

Timken JLM104948 (tapered roller/cone)
Timken JLM104910 (tapered race/cup)
Timken JLM508748 (tapered roller/cone)
Timken JLM508710 (tapered race/cup)

seals:

CR 23451 (STEFA, BB - dims:60x85x8), upper portal/axletube oil seal
CR 19687 (STEFA, BB - dims:50x90x10), inner hub grease/oil seal

STEFA, BY 80x92x28 (pn#32896 1) - outer hub grease seal -- 
*this is the impossible to find seal.

pricing (www.bearing.com on 2/3/2006):

SKF/FAG 6210 $23.91
INA BK4520 $13.93
Timken JLM104948 $10.86
Timken JLM104910 $4.78
Timken JLM508748 $20.18
Timken JLM508710 $23.53
CR 23451 $3.00
CR 19687 $3.88