I ain't much help here.http://www.dowcorning.com/content/etronics/etronicscoat/default.asp
I use D/C stuff for industrial applications where mosture (water based coolants) in machinery can
be an issue - cases where this was overlooked by the OEM. Reverse engineering if you will. My recomendations are limited to perminate applications but the link may provide you with additional information. Sorry for the short reply.