5200

I'm installing new flanged ball valves on my E27. After just cutting and epoxy sealing 3 new backing blocks, I'm curious what I should use to adhere them to the fiberglass inside of the hull. I've read 4200 and 5200 (3M) are popular, and that 5200 is more permanent, and 4200 is good, but...

Hi all , I would like to get your feedback/help. I replaced the depth sounder thru-hull fitting on my E27 located on the bow. The original fitting was bronze and replaced with same and used 3M 5200 around the fitting to set/seal and bond it to the hull. I was just inspecting the boat and...