After spending time on Catalina Direct's site trying to figure out which were the correct window gaskets for my boat (1994 Cat 30 MK II) I purchased what I thought were the correct gaskets for my leaky opening hatches. Of course it turned out that they were the wrong gaskets but by the time I realized this I had ripped out one of of the gaskets. Since it crumbled as I removed it I couldn't put it back in so I went to the local Home Depot to find something to tide me over while I tried to get the correct gaskets. There I found a "D" shaped EPDM rubber weatherseal, 5/16" wide with self stick backing that ended up being perfect. It is slightly wider that the opening in the window track so you have to squeeze it a little to get it in but that and the adhesive back makes for a secure installation. I removed the old gaskets, scraped out the residue with a screwdriver, cleaned the track with alcohol and pressed in the new gaskets. $8.00 did the whole job and the windows are now tight closing and leak free.