port hole rubber gaskets

My portholes need all new gaskets. The boat was built in 1979 in West coast Canada by Spencer Yachts. I need to identify the mfg of my portholes and then attempt to locate replacement gaskets. It appears there are at least two separate gaskets, one on either side of the glass. Does anyone have...

Hello! I am looking for port hole rubber gaskets to replace the ones on my 1985 Baba 40 that are old and disintegrating. Does anyone know where I can find/buy them? Has anyone replaced them before? If so, what have you used to secure them? Thankyou!