Many people are also not aware that most silicons will eat metal and in particular wiring.
If you do want to use silicon on metal and/or to hold a cable in place make sure it is an "acetic acid free" type.
Practically EVERY silicon HAS acetic acid in it unless it specifically states that it does not.
"Never use acetic acid cure room temperature vulcanizing (RTV) silicones in your well logging tools, or on any electronics for that matter. Common RTV silicone made for automotive and general purpose use, the stuff that smells like vinegar, is corrosive to electronics, and its use is a death sentence to reliability." more reading here:
http://www.logwell.com/tech/servtips/RTV.html
