The silicone will probably be OK but you have to be careful with it around electrical circuits if it is of the type that outgasses acetic acid during the cure (that strong vinegar smell you get while it is curing).
Acetic acid is corrosive to copper, zinc, brass, etc. which are materials often used in various electrical connectors and switches. Once cured, it isn't a problem but what you want to avoid is a situation where the fumes from acetic acid will be trapped and contained around electrical contacts, unprotected circuit board traces, etc.
Rodger
EOS 1DX M3, 1DX M2, 1DX, 5DS R, M6 Mark II, 1D M2, EOS 650 (film), many lenses, XF400 video
