Looking for silicone to pot RTV for PCBs

[techie]

Potting RTV for PCBs

I am looking for some cost effective RTV silicone that can be used as a potting compound for protecting electionic circuits from dirt and moisture. The existing choices are either too hard when set, too viscous before flowing or too expensive if they are right. I want something that is.

1. Flow-able before setting. So that it can reach everywhere on PCB
2. Rubbery when set. So that it can be removed if a component needs to be changed.
3. Should not be too expensive.

Any ideas will be appreciated.

 

[flatulent]

Re: Potting RTV for PCBs

https://www.humiseal.com/ is a company that makes conformal coating material which works better than RTV because it is specially designed for protecting PC cards from the environment. Other companies make similar products.

 

[rauol]

Re: Potting RTV for PCBs

RTV silicons are always costly,
there are some polyurethene potting compounds which have a low cost and are workable.

**broken link removed**
http://www.dowcorning.com/