Chain plate leaks

I’m having trouble with leaks from my chainplates on my Brewer 44. Has anyone found a good way to seal them?

I’ve got escutcheons on mine and they don’t seem to help. I also used 3M 4000.

I have tried several alternatives and the one that has worked the best is Butyl tape for caulking with home made fiberglass escutcheons. I rebedded Allegria's chainplates a couple of years ago and have had no leakage since.
Dee

Hi Scott,
I made the escutcheons out of a fiberglass panel I got from MacMaster-Carr. I think the panel was one that was chemical resistant because it was the only one that came in white. It was 1/4 " thick and I cut them into 2x4" rectangles and then drilled and cut slots for the chainplates. I drilled and countersunk holes at the corners for screws to attach them to the deck. I made them around 5-6 years ago and tried silicone, and then polysulfide, and then butyl. They have held up well. The butyl has held up the best as far as the sealants, and I had no more leaks, even after some fairly vigorous sailing over the past few years.
I'm afraid I don't have any pictures, and now Allegria is off to other adventures so I can't get to her to take any.
Hope this helps.
Best,
Dee