Procon series 6 repair

[Bricklayer]

I picked up a procon series 6 stainless steel 660 gpm 250 psi pump as a backup/spare pump for my RO. I'm pretty sure it's seized up. Won't turn by hand. I paid basically nothing for it so no big loss if it's scrap. Where is the best place to get parts for them? Are they crazy expensive to get rebuilt? Can a seized pump be unseized? I haven't tanken it apart yet but I'm assuming they are similar to rotary vane vacuum pumps.
Just smaller scale. I sent JC beverage an email but haven't heard back.

[halladaymaple]

If you find another one let me know. Want to upgrade my brass to SS. I'm sure you can rebuild them, not a hole lot to them being a rotary vane pump. The procon website has the manuals for the
Darrell