Water and moisture protection

[heresjohnnie]

Does anyone know of a spray can type product i can use to protect electrical and electronic components on board. I've tried products inc wd40
but they wash away with seawater.
thanks

 

[Elemental]

Does anyone know of a spray can type product i can use to protect electrical and electronic components on board. I've tried products inc wd40
but they wash away with seawater.
thanks

Do you really need spray? I'd imagine that a lot of things that are propelled from an aerosol are likely to wash away, unless they are some kind of setting wax similar to m'cycle chain lube...

I use silicone grease on all electrical stuff onboard.

 

[electrosys]

I don't know exactly what kind of components you had in mind but ...

... some years ago I lived halfway up a mountain in North Wales: at such an altitude quite often I'd find myself actually inside a cloud - as you might imagine this was not good for electrickery. On several occasions I left the cottage windows open, only to later find water streaming down the walls, with smoke coming out of the computer's power supply.

The car was equally displeased with such generous helpings of water vapour, and often refused to start for a day or two thereafter.

The local AA man solved the car ignition problem - he recommended the leads and distributor cap be thoroughly cleaned and put in a very low oven overnight to dry-out. Then to spray the leads and cap with Holts 'Damp Start', to coat the surfaces with a plastic film.

I did exactly that, which resulted in no more car starting problems - even when in a cloud.

 

[earlybird]

RS stock a few types of "conformal coating" spray for electronic components etc.
Is that what you require?

 

[heresjohnnie]

Yes thanks for the info much appreciated.

 

[dash300]

I don't know exactly what kind of components you had in mind but ...

... some years ago I lived halfway up a mountain in North Wales: at such an altitude quite often I'd find myself actually inside a cloud - as you might imagine this was not good for electrickery. On several occasions I left the cottage windows open, only to later find water streaming down the walls, with smoke coming out of the computer's power supply.

The car was equally displeased with such generous helpings of water vapour, and often refused to start for a day or two thereafter.

The local AA man solved the car ignition problem - he recommended the leads and distributor cap be thoroughly cleaned and put in a very low oven overnight to dry-out. Then to spray the leads and cap with Holts 'Damp Start', to coat the surfaces with a plastic film.

I did exactly that, which resulted in no more car starting problems - even when in a cloud.

+1 . Those of us that owned and ran the original Mini with its exposed foward facing distributor swore by the stuff. It worked extremely well.

 

[Ex-SolentBoy]

Electronic components exposed to seawater?

Surely you need more than a spray or grease?

 

[Plevier]

Conformal coating - RS, Farnell or Maplin.
http://en.wikipedia.org/wiki/Conformal_coating

 

[stevensuf]

google pcb lacquer, you just spray on the back of the circuit board to protect it.