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Boat leak #14942820 01/01/24 01:53 AM
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Arnie13 Offline OP
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I have a Jon boat I use for fishing small lakes. However, the plug in the stern doesn't seal out the water very well. I got another boat plug with the brass extension and added a little plumbers wrap, but that didn't work. I put vaseline around the rubber to soften it and that didn't do the trick either. Any ideas? Thanks

Re: Boat leak [Re: Arnie13] #14942830 01/01/24 02:04 AM
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Please post pics of the plug and plug receptacle.
How long have you had it?
When did the leak start?
Are you sure the leak is coming from the plug?

Re: Boat leak [Re: PowerLizard] #14942873 01/01/24 02:43 AM
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I can't figure out an easy way to transfer images, but I'm sure the leak is from the drain hole. I got the boat used and it is about 15 years old. It has always had this leak.

Re: Boat leak [Re: Arnie13] #14942885 01/01/24 03:02 AM
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Does your plug have a nut at the bottom which can be tightened to make it fill the hole better.
If not, go buy one at Academy.

https://www.academy.com/p/marine-raider-snap-handle-drain-plug

Re: Boat leak [Re: Arnie13] #14942886 01/01/24 03:03 AM
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[Linked Image]

Re: Boat leak [Re: PowerLizard] #14943222 01/01/24 05:27 PM
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Thanks for the reply. That is the type of plug I have, But, I have just been bending the round extension at a 90 degree angle after insertion. Is that wrong ?

Re: Boat leak [Re: tmd11111] #14943244 01/01/24 05:50 PM
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Great that might be the answer. Is Flex Seal easy to remove ? Thanks

Re: Boat leak [Re: Arnie13] #14943278 01/01/24 06:41 PM
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Originally Posted by Arnie13
Thanks for the reply. That is the type of plug I have, But, I have just been bending the round extension at a 90 degree angle after insertion. Is that wrong ?

You want to tighten the nut till you get a snug, leak free seal when you move the lever 90° to the sealed position. It is designed to be small enough to fit slightly undersize holes and to be adjusted to fit slightly oversized ones. Don't go overboard on tightening, just enough to stop it from leaking.
Good luck.

Re: Boat leak [Re: Arnie13] #14943373 01/01/24 08:13 PM
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I have always thought it was a trial and error approach. Tighten the nut (clockwise) on the plug a little, insert the plug and fold it 90’. If it’s loose, pull it out, tighten the nut a little more, insert the plug and fold it 90’. Keep repeating until it fits snuggly.

You don’t want to over tighten the nut because the plug won’t fold over in the hole and if you force it to fold over, it could split the boat’s plug receptacle. I have seen several jon boats with split plug receptacles from forcing the plug to fit or stuffing other materials in there.

Re: Boat leak [Re: Arnie13] #14943675 01/02/24 03:11 AM
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Arnie13 Offline OP
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Thanks for the help !

Re: Boat leak [Re: Arnie13] #14995629 02/21/24 09:01 PM
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If you are not worried about having a plug, I would silicone up the plug hole.


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Re: Boat leak [Re: Arnie13] #15218316 10/15/24 01:56 PM
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Yes, over time flexseal will come off, if the boat stays out in the sun next to pond outdoors, you may have
coat the area again. But no biggie, happen to us before. I just sealed the whole hole plug it, and coated with
rubber seal used in electrical connections. Works for us, other alternative is weld up the hole and plug it.
Never worry agian!



fish on.....


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Re: Boat leak [Re: Arnie13] #15230825 10/30/24 02:24 AM
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I had this issue with my little boat and i just filled the gap with a can of expanding foam. It's not pretty but it's water tight.

Last edited by Grainraiser; 11/02/24 04:15 PM.
Re: Boat leak [Re: Arnie13] #15231568 10/30/24 07:34 PM
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The leak may be coming from the outside of the tube the plug fits into. I had one that was doing that and I purchased a little larger tube and plug from Amazon and installed using a brass uni bit. No more leak.

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