3M 4200 vs 5200 for thru-hull applications

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Tim J

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Jun 5, 2008
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I am getting ready to install trim tabs on my boat and the instructions call for using 3M 5200 adhesive to seal around the screws and cables. A salesman at West Marine told me to never use the 5200 on my boat as I will never be able to replace anything glued in place with it. He recommended using the 4200, contrary to my installation instructions. I like the idea of being able to remove the screws, etc later if I need to, but am concerned about the 4200 being able to do the job. Anybody have any experience with this?
 
Scaaty

Scaaty

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Re: 3M 4200 vs 5200 for thru-hull applications

4200 will work just fine...and just as tough as 5200. Just cures a little quicker, which still takes time though.
 
bhammer

bhammer

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Re: 3M 4200 vs 5200 for thru-hull applications

I used 4200 on my smart tabs. I filled in each crew hole, placed on the back of each bracket and then wetted the screw. Made for one heck of a mess to cleanup with ll the overflow but it's water tight for sure.

4200 worked great. Both of them, once you open them, will cure in the tube. So once you are done with this project, the tube can be trashed. They have 4200 here at iBoats and they carry it at my local walmart.
 
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Bamboo

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Re: 3M 4200 vs 5200 for thru-hull applications

If you think you may ever want to remove them...use 3M 4200 or 3M 4000uv (same as 4200 but with UV protection). I did trim tabs recentally and used 4000uv. 3M 5200 is great stuff and is perfect for some applications, but it doesn't like to come off. I've known people who have had to chisel parts off which were installed with 5200.
 
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The Great Escape II

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Outsider

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Re: 3M 4200 vs 5200 for thru-hull applications

So once you are done with this project, the tube can be trashed.


I've kept partial tubes in the fridge for up to 6 months; warm it up before use ... ;)
 
bhammer

bhammer

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Re: 3M 4200 vs 5200 for thru-hull applications

Outsider said:
So once you are done with this project, the tube can be trashed.


I've kept partial tubes in the fridge for up to 6 months; warm it up before use ... ;)
Click to expand...

I am glad that worked for you. I hasn't for me in the past. :mad: Both 4200 and 5200 cure based on moisture contact and once the cure has started, there isn't any stopping it. I have heard of some people have success by removing the applicator tip, and placing the tube in a freezer bag with some decaent crystals and then into the fridge. To much work for me though...:D
 
Scaaty

Scaaty

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Re: 3M 4200 vs 5200 for thru-hull applications

I keep mine in the fridge too, and it cures air when opened, but capped and kept cold good for decent amount of time. And on strength, not an issue. T/S 700/300, still a million times better than sillycone. We are not bonding hulls here, just sealing..
 
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jsanders420

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Re: 3M 4200 vs 5200 for thru-hull applications

bhammer said:
I used 4200 on my smart tabs. I filled in each crew hole, placed on the back of each bracket and then wetted the screw. QUOTE]

I bet your crew was unhappy with you!:D
Click to expand...
 
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TriadSteeler

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Oct 26, 2006
Messages
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Re: 3M 4200 vs 5200 for thru-hull applications

Outsider said:
So once you are done with this project, the tube can be trashed.


I've kept partial tubes in the fridge for up to 6 months; warm it up before use ... ;)
Click to expand...

I have kept them at room temp. When you get it back out again run a screw in the top and pull it out. It is usually only cured in the neck and that whole cured piece will come out when you pull the screw out.
 
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