The mystery is unveiling
Try this new URL http://www.reliabletool.com/products/HD-1206.htm
The last URL I sent had an extra h before the .htm. You will like the numbers this time.
Looks like you were right all along. Thanks for the tip on the seal internal diameter.
I also received this from firstname.lastname@example.org
Below you will find the exploded view for the part numbers you have requested.
3160121 Brake drum, 12”, 6 lug
450659 Inner bearing, #25580
680364 Inner race, #25520
450658 Outer bearing, #LM67048
680365 Outer race, #LM67010
680370-100 Grease seal
3160347 Brake assembly, RH, 12” Dexter
3160348 Brake assembly, LH, 12” Dexter
So I guess Reliable Tools makes drums for Dexter Axle