Fuel Pressure Gauges - Marine?

[ddevore]

This might be a stupid question, but to put a fuel pressure gauge in a closed hatch do I need to find a Marine Gauge?? I'm pretty sure any of the decent ones from Summit or Jegs should be sealed, but I'd hate to make a dumb ass mistake when messing with gas and a sealed engine!! :skull:

[1968Droptop]

This might be a stupid question, but to put a fuel pressure gauge in a closed hatch do I need to find a Marine Gauge?? I'm pretty sure any of the decent ones from Summit or Jegs should be sealed, but I'd hate to make a dumb ass mistake when messing with gas and a sealed engine!! :skull:
I can't see how they wouldn't be sealed ? Closed or open compartment, you don't want gas leaking :220v:. Moon eyes has them on their web site as well, liquid filled, $35.