Fixing a slow water leak

[Iamrandywhite]

I have an O'Day 27 with a small leak at a through hull fitting. As the boat is in th water ( I guess I didn't look closely enough when putting in), is there any sealant I can use with the fitting leaking without pulling the boat?
Thank you in advance

[Mobnets]

Is it a leak at the thru hull fitting or a seacock assembly attached to the thru hull fitting?

Mobnets
1973 Paceship Chance 32/28 "Westwind"

[Iamrandywhite]

The leak is not coming from where the housing contacts the hull. Instead, it is coming through between two parts of the transducer. Unable to tighten these pieces any more for fear of breakage. Would much prefer some sort of sealant.

[CalebD]

Butyl tape rolled into thin pieces?

[mitiempo]

Originally Posted by Iamrandywhite

The leak is not coming from where the housing contacts the hull. Instead, it is coming through between two parts of the transducer. Unable to tighten these pieces any more for fear of breakage. Would much prefer some sort of sealant.

Undo the 2 pieces and use a sealant that will not harm the plastic, then re-assemble. Butyl could be used or Sika Flex.

[Iamrandywhite]

Problem solved. I was able to stop the leak long enough to seal it with silicon caulk. Watched it for several hours and is ok. Will check periodically also. Thank you for your assistance.

[CorvetteGuy]

I fixed a seacock with two part epoxy putty, it cures with the presents of water. $15 at the local boat shop, or canadian tire. held for a season till I could replace it but sure it would have lasted longer.

[DivingOtter]

splash zone or wet dry brand underwater epoxies