Fremont Industrial Supply, Inc.
UC206-20 1 1/4" insert bearing FREE SHIPPING $10.85
Thay have a web site.
I bought cheap china bearings last time from above. These are outers. I've never had an inner brg go bad. I've bought high quality bearings from argo, and also had an argo dealer send me china bearings..
You can get seals for your conquest at any bearing supply. The wimpy stock kind, with just a wiper seal, or a "normal" grease seal with a dust seal and an inner lip with a retainer spring. If your axles are worn where the seals run, the stock seals won't do much good. One option, since you have front and rear bearing extension housings, is to swap middle with end axles. That gives you a fresh bearing and seal surface. All my axles have deep grooves from where the seal runs.. cheap steel.. so I use the seals with a garter/retainer spring that will seal on a smaller ID. If you don't have any wear, or just a little, you can take the spring off and run the seal that way.
To Invent, you need a good imagination and a pile of junk. (Thomas Edison)