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re: Sealant for a livewell...

Posted on 5/21/18 at 5:59 am to
Posted by Da Hammer
Folsom
Member since May 2008
5767 posts
Posted on 5/21/18 at 5:59 am to
I have a 500 GPM aerator pump. It's intake is below the water line to I need to replace the pump and housing and the two plastic nuts that hold the intake and the pump tight on each side and make the live well water tight. I see I typed 5200 but meant 4200, unless yawl have other ideas I think that's what I will use. I don't like the idea of silicone not sure it will hold up and if it doesn't the boat could sink...
Posted by fishfighter
RIP
Member since Apr 2008
40026 posts
Posted on 5/21/18 at 7:14 am to
Silicone should not be used in a boat. It's crap. If by any chance you ever spill gas in the hull, the gas will break down silicone real fast.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
66763 posts
Posted on 5/21/18 at 7:23 am to
In short 5200 is the original slow cure version of 4200. It's got like a 7 day cure time.

5200 is also the gold standard for marine sealant/adhesive. Its approved for direct UV exposure and use below the waterline. If you read the label no silicone product out there is approved for use below the waterline. You need a polyurethane or epoxy.
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