Are military aircraft cockpit instruments watertight?

[Whirley]

Maybe someone can please help me with this thought. I thought about the canopies of fighter cockpits. I imagine when the canopies are open to get in or out rain water with wind or salt water spray on aircraft carriers can get onto the instruments.

Are these instruments generally water tight, to prevent problems with electrics etc.?

So far I only found info on the web about problems with spilled coffees and failing instruments in general aviation. I'd imagine a Boeing/Airbus tanker cockpit being the same as the civilian counterpart.

But what about fighters like F-18 or helicopters like AH-64?

[G.J.S]

3 hours ago, Whirley said:

Maybe someone can please help me with this thought. I thought about the canopies of fighter cockpits. I imagine when the canopies are open to get in or out rain water with wind or salt water spray on aircraft carriers can get onto the instruments.

Are these instruments generally water tight, to prevent problems with electrics etc.?

So far I only found info on the web about problems with spilled coffees and failing instruments in general aviation. I'd imagine a Boeing/Airbus tanker cockpit being the same as the civilian counterpart.

But what about fighters like F-18 or helicopters like AH-64?

No more protected than your car. If it’s inclement weather, canopies are closed until aircrew arrival, and opened by ground crew. The canopy remains open only as long as it has to be, for crew boarding, and strap in, pin stowage.
Yes, you might get a good soaking if the rain is coming from anywhere other than 6 o’clock. but hey-ho! 

[Whirley]

1 hour ago, G.J.S said:

No more protected than your car. If it’s inclement weather, canopies are closed until aircrew arrival, and opened by ground crew. The canopy remains open only as long as it has to be, for crew boarding, and strap in, pin stowage.
Yes, you might get a good soaking if the rain is coming from anywhere other than 6 o’clock. but hey-ho! 

Hm, interesting thanks!