Protecting electronic circuits in hazardous areas ?

[elementHTTP]

I am interested in how to protect electronics circuit in hazard areas

Are there special ways of soldering /circuit arranging for highly vibrational places ?
moist/water protection ?
Impact ?
Hi temperature ?
Special box materials for examples above?
etc...
tnx ;D

 

[jonlg_uk]

There is only one way to do this IMO and that is to use potting compound:

http://en.wikipedia.org/wiki/Potting_(electronics)

 

[Uriah_Heep]

One could use epoxy resin to fully protect the electronic circuit. This is very common in the electronics industry.

To simply protect the printed circuit board against moisture, try conformal coatings such as the Loctite Shadowcure.

If it is not possible to fill the complete assembly with a resin, some electronic parts such as capacitor can be protect agaist vibration using silicone.