Since I hate throwing away stuff, and thanks to Google, I stumbled across SILCA, US. At my pre-retirement professional pay rate of $90 / hr, plus parts $100, I now have a $280 1980’s SILCA pump. I actually bought extra parts to get free shipping. At this point, it might just last beyond my lifetime.
Only used the seal, gasket, and hose.
Took a couple 12 gauge cleaning patch thru it, and a little Basso to clean up the brass assembly.