Hi Joerg I believe that it is hard to improve on a direct connection system using dynaplates. If the connections are good and the dynaplates are relatively clean then I am not sure that extending the

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Hi Dean The washer with rubber inner seal is called a Dowty washer. A good hydraulic engineering or bearing shop will carry these and be able to match up the correct size.

Sounds like you should consider applying a “conformal coating” to the PCB. This is like a thick lacquer that prevents corrosion and is a standard process in preparing PCBs for harsh environments. It i