Anyone know the part number for the axle bearing
o-ring for a 9" ford Moser housing
I think they are all the same
Thanks

Just take the old one to any "real" parts store and they can match it up

If you know the diameter of the bearing and the cross section of the o-ring you can get the number using McMaster-Carr.com You can probably figure out the cross section looking on there if you don't know that.

I often use their site for technical information like this. They even provide solid models of their parts to use in my assemblies. It's a nice asset.

NAPA should be able to at least tell you the exact size.
Buyers guide.
I'd try to get the bearing number for Phord axle, then go for the assembly breakdown.