I thought I'd update on my progress on finding this material for my 1988 38-200. Maybe it will save someone some time.
I checked with Lewmar -- afterall they made the fixedlights -- and they advised me that they don't stock gasket material. So they sent me to their supplier, Select Plastics in CN. I talked with them (they were very nice and apologetic), and they advised that they used to have it in stock but don't anymore. They have vinyl gasket material that would fit, but that it would cause the plastic to craze after a couple of years, so I would have to replace it with tempered glass -- unfortunately I've already reassembled and resealed the other three ports, so that one would no longer match the other ones. He said I would be able to pick up the vinyl gasket from any "shower door place", however.
Lewmar also suggested that I check with Pacific Seacraft, so I talked with Bob there who advised that their Ericson parts are completely depleted and that I should probably be looking for something that is "good enough", like from Pompanette or WM.
I did think of going to Wefco Rubber, in search of the perfect replacement, but I'm concerned about the volume I would have to buy -- I need about 5 feet -- and the delay in getting the stuff -- I'd like to get this port done by Labor Day, which means that I need to reinstall the weekend of the 26th, so I want to find something this week/weekend.
So, considering all that, I guess I'm going to go for the "good enough" solution, but any additional direction would be very welcome. Like what material should I be looking for to prevent crazing? Has anyone already used something else that looks decent and, absolutely most importantly, does not leak?
Many thanks.