Replacement porthole gaskets
I have a leaking (opening) porthole on my 1978 Albin 33. The porthole is bronze and the gasket is dried up and in need of replacement. I can not find anything on the porthole that would help to identify the company that made it. Does anyone know who the manufacturer might be, and if so, are they still in business? Otherwise I welcome any suggestions on where I might find suitable gasket material. The gasket space in the porthole is 5/16-3/8" wide and 5/16" deep. Thanks for any advice!