The issue with the stainless steel housing and C-stainless steel being used for the saddle pad!
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Theoretically, C steel can contaminate stainless steel with iron ions; I wonder what the actual corrosion situation is like in practice?
Doing this will definitely cause pollution, but there must be shims in place to prevent corrosion from reaching the cylinder body
Check whether the medium contained has any requirements; if it is merely to increase stiffness and the medium is not affected, it can be used
If there’s a concern about contamination, just use stainless steel shims
In addition to iron ion contamination, galvanic cells form on the carbon steel supports and stainless steel housings after operation, leading to electrochemical corrosion. All the stainless steel equipment support pads I’ve seen are made of the same material as the housing; the supports themselves are made of carbon steel