Leaking portholes on GW 232 Gulfstream

[coldpizza]

The two back portholes on my 2004 Gulfstream leak. The are openable but it seems the gasket has dried and doesn't seal. until I find a gasket, I am thinking to caulk it from outside. I'd like to use a pliable calk, one that will be easy(ish) to take off when I get the gasket. Any ideas?
I'm adding some pictures to show the gaskets.
Thanks in advance.
Len

 

[seasick]

I might go with a thin layer of RTV, (probably in black) It is removable with some effort. What I don't know is if the sealant will stain the window panes though.

I would not caulk when the portholes are closed. Instead i would open them and apply a thin bead of sealant on either the gasket or the panes when they normally squeeze together.
That will hopefully limit the sealant to the areas that wont be seen when the ports are closed

 

[Fishtales]

A clear silicone like GE would work well.
GW uses the almond color on the deck.

 

[Mustang65fbk]

I'm guessing that unless the windows were replaced, that they're going to be the ones from factory. Of which, I believe you'll have a standard MoonLite brand fixed 92 series for the asymmetric one, and then an oval 91 series for the other. Both of which appear to use the same gasket, which can be had through the company listed below, as well as the glue.

Acrylic Gaskets - AB Marine

Moonlight Acrylic Gaskets fit moonlight hatches and are installed with gasket glue.

ab-marine.com

Gasket Glue - AB Marine

The Permalock CA 26 gasket glue is used to attach the gasket to the hatch.

ab-marine.com

 

[coldpizza]

Great, thanks for the info. I think they are original windows. There are two rectangular windows that open (one on port, one on starboard) and two oval fixed windows (one on port, one on starboard). I'll look into the sources you provided.Take care. Len

 

[coldpizza]

I might go with a thin layer of RTV, (probably in black) It is removable with some effort. What I don't know is if the sealant will stain the window panes though.

I would not caulk when the portholes are closed. Instead i would open them and apply a thin bead of sealant on either the gasket or the panes when they normally squeeze together.
That will hopefully limit the sealant to the areas that wont be seen when the ports are closed

Great tip to apply the product in a thin bead from inside, between glass and frame.
Len

 

[coldpizza]

A clear silicone like GE would work well.
GW uses the almond color on the deck.

I am thinking the same, use a clear silicone and apply it similarly to what seasick said. I am also going to look into the products mustang65fbk. Thanks!