CALIPER REBUILDING QUESTION

Hi Folks

I'm looking to rebuild a set of KH calipers to keep on the shelf. In the past, everything I built got lubed with appropriate brake fluid and then installed. Since these will not be put into service until who knows when, I want to lube them with something a little more substantial. I am thinking about synthetic or silicone grease, but I don't want to use something that doesn't play well chemically with brake fluid. Any suggestions?

Thanks FABO