Bow hatch portlights

I have fixed bronze 5 3/8th hole portlights and need to replace the
gaskets and “glass”. Can anyone help me find a supplier. I feel sure
that the items I need are to replace the originals. Paul Fairbrother

You may want to try this site.
Otherwise Sam Morse Company can probably tell you the original supplier.

Doug Beu
s/v Fritha

They are produced by ABI