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Old 01-21-2019, 09:53 AM   #1
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Thru Hull Fittings

Changing all thru hull fittings, should I use 4200, 5200 or what else?
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Old 01-21-2019, 10:22 AM   #2
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If you're never taking them out again, hard to beat 5200, IMO.

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Old 01-21-2019, 10:26 AM   #3
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Either. If the yard ever has to replace them they will put a torch on the fitting to soften the 4200/5200 so either will work. 5200 is more for adhesion which in a thru hull you don't need, so my preference would be 4200.



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Old 01-21-2019, 10:27 AM   #4
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Quote:
Originally Posted by O C Diver View Post
If you're never taking them out again, hard to beat 5200, IMO.

Ted
That what I would use. Just didn’t want to be the first to say it.
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Old 01-21-2019, 06:32 PM   #5
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I can see using 5200 or 4200 for thru hull fittings but what should I use for struts as they may need to come off.
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Old 01-21-2019, 07:09 PM   #6
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Any metal fitting bedded with 5200 is pretty easy to remove just by heating it.
I always used 5200 for any underwater fitting and never regretted it.
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Old 01-21-2019, 08:53 PM   #7
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Be careful getting 4200 on threads that you don't want it on, very sticky and it makes it hard to turn.
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Old 01-22-2019, 06:48 AM   #8
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5200 for sure. Never had an issue removing' as stated a little heat will do it.
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Old 01-22-2019, 07:04 AM   #9
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The USCG practice when inspecting vessels that can carry over 6 is to ask for a thru hull or two be removed for inspection.

Of course this is not required for a non inspected vessel, but if the USCG has found it to be a worthwhile practice , sealing thru hulls should be done so the can easily be inspected. Not installed with glue, but with sealant.

4200 and the proper removal tool will make inspection a few min job , should you desire to look.
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