Originally Posted by Maine Sail
If you can measure the U channel you may try calling a company like Bomon (not Bomar) in Canada and asking who they would recommend for a supplier of channel gaskets for aluminum ports.
Thanks Maine Sail! I got a chance to play with the butyl tape today, and it looks like it's going to be very useful.
I've been corresponding with Bomon, too, and they may have a gasket that will work. At a little under $4/ft, I may be able to re-gasket all seven fixed ports for less than $100.