John, Many would suggest 3M 4200, but silicone has issues. I swear by butyl tape (it never hardens out completely and it is very flexible). The best source is Maine Sail (Compass Marine https://marinehowto.com/), though, I am not sure if he still sells this stuff (he had a bad hard attack last year).
Marek Ottawa, ON From: John McCrea via CnC-List <cnc-list@cnc-list.com> Sent: Monday, March 21, 2022 4:28 PM To: 'Stus-List' <cnc-list@cnc-list.com> Cc: johnmcc...@comcast.net Subject: Stus-List Chainplate Sealing. Hello. I have a leak on my port side chainplate that needs addressing. I pulled both chainplate cover plates and noticed that I had a stainless rod on starboard that holds the two chainplates pieces together. One on port is missing. Maybe that is causing excess movement and more adapt to leak? The covers are original and thin 1/16 aluminum. I am getting them beefed up to 1/8 stainless. Looks like the PO had only sealed them with clear silicone. So that will all be dug out. I am also inspecting the hull tabbing below with the chainplates etc to ensure that I do not have any issues there. What is the best sealant to use when installing the new cover plates? Thanks! Regards, John McCrea Talisman 1979 36-1 Mystic, CT
