I have also had the rust problem from the pickle pot here in sunny
California. I was using an old crock pot with a glass lid, but
apparently that was not sealed enough. So I got a wide mouth canning
jar with a spring lid and rubber gasket and put the pickle in that and
set the canning jar into the crock pot 3/4 filled with water - sort of
a double boiler arrangement. When finished, close up the canning jar.
The rusting of tools and motorcycles in our garage then stopped…
fortunately for my marriage!! and my motorcycles!!!
Of course this was after the “explosion of pickle jar on the hot
Los Gatos, California