Marinium Fuel, Water and Holding Tank Caps

[Euphoria2011]

Hello, I have 3 deck ports that say Marinium on them and I was thinking I might look into getting new caps and seals. Mostly one for the diesel fuel port to ensure i do not get water in the fuel tank. I am not sure but they might be perko and marinium is just the metal. Anybody got any suggestions? you can see how the water sits on the fill cap, not long till it will work its way in the tank.
see the pics.

 

[jibes138]

I looked for replacement caps many years ago when I accidently dropped one in the water, the chain attaching it had broken if I recall. Anyway I was unable to find this outfit still in business. I did find some caps and seals at a marina in Mystic Ct. just by luck. I happened to stop in their store and sitting in a display case were the caps. The marina was on the mystic river on the east side and mostly serves power boats. It is the first marina you see on that side heading up the river. I believe the name is Mystic River Marina and they seem to have a website with a phone number. My experience was 15 years ago so I have no idea if the info is still relevent but worth a try.