Gyro,
Thanks, I found the POR-15 website. It probably is rather similar to other rust preventative primers like Rust Destroyer, but I think it's a separate company. You never know. There seem to be a lot of so-called rust renovator type of paint primers. And some work better than others. Common to all, however, is the need for proper surface prep.
I will look for the Rustoleum "Crystal Clear Lacquer". I googled "Bakelite Lacquer" and learned that there actually is a type of lacquer made of liquid Bakelite. It's apparently used to coat electrical wiring, etc. However I was unable to find any purveyor of such a substance. I suspect it's a bit toxic. Also, I learned that the filler in Bakelite could be wood flour, or asbestos. So I will be careful when I handle the agitator, and I don't think I'll be sanding or grinding it much

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Robert,
Thanks. I didn't think I cared much for turquoise, but once I saw this pair the whole effect was a bit magical. They would probably look good in my pale green patio kitchen... And thanks for having posted all the photos of your Lady Kenmore restoration. It helped a lot to see your descriptions of the various parts.
The part about bearing/spin tube/seal replacement was good. I wasn't planning on doing that this go-round. There is slight play in the agitator shaft. I don't know if this is normal or not. There is no sign of water intrusion, though, as black grease is readily visible, and the washer seemed to have a normal sound signature during my one test of it.
This was the first time I've pulled an agitator, wash basket, and tub. I was really surprised at the hard water mineral precipitate that coated the underside of the wash basket cone and the bottom of the outer tub. I blame it all on the phase-out of phosphates in laundry detergents - which has left consumers with little choice but to use washing soda (sodium carbonate), which we all know will form a nasty precipitate with minerals. There was this yucky light gray layer of clay-type mud, and then what really was like a thin layer of "cement" underneath it. In some areas I was able to chip the precipitate "cement" away by sliding a single edge razor under the edge - it came up in big flakes. In other areas it's stuck fast and I think only a harsh acid treatment (like Zud or muriatic) would dissolve it. And of course those treatments will also attack the vitrified enamel coating.