What is a good seam sealer equivalent for the trunk?

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Hemihead2

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Hi- I'm looking for a cheap and available seam sealer for the trunk. I assume I can't simply use caulking, correct? Any ideas or experience is appreciated. Thanks!
 
O'Reilly has some Transtar brand that are reasonably priced. Check the application for paintable, brushable etc. I think it was Transtar Autobody Technologies Body-Tec 11 Ounce Sealer Part # 4162 Line: TRS
 
For either product, how much did you need? I'm going completely through a 66 Valiant, the entire trunk area needs re-done, I'm adding a 4-speed so the hump will need sealing, and when the interior comes out to do the hump, I'm sure I will need more to refurbish the floor pans.
 
The Wurth stuff is pretty good and the can stuff goes pretty far. Do a little research. Some seam sealers are direct to metal some are not. I prefer the urethane type seam sealers. Something like this. The 2 component sealers are nice, but expensive to use.
Fusor Direct to Metal Sealer/Adhesive

You don't want anything that's going to shrink back or crack and let moisture in. Seal up all the weld seams top and bottom, and cavity wax in the rails if you really want to protect it.
 
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The two-part seam sealers are really nice (I really like Fusor) but tend to be spendy and often require a special gun. For the money, and if you want it to look factory (crude), just use a brushable seam sealer - as has been suggested already. The stuff cures fast and is tough. One I would avoid is 3M Fast 'N Firm Seam Sealer. It's in a caulk tube. Very old school. If and when it eventually cures, it'll crack.
 
70Duster440 said:
The two-part seam sealers are really nice (I really like Fusor) but tend to be spendy and often require a special gun. For the money, and if you want it to look factory (crude), just use a brushable seam sealer - as has been suggested already. The stuff cures fast and is tough. One I would avoid is 3M Fast 'N Firm Seam Sealer. It's in a caulk tube. Very old school. If and when it eventually cures, it'll crack.
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Ditto on the 3M fast and firm sealer, junk and $25 or so for a tube.
 
FWIW, I've used brushable by Evercoat and Eastwood without complaint. The Evercoat and Wurth are priced similarly per quart. The Eastwood is about $15+ less.
 
GeorgeH said:
The Wurth stuff is pretty good and the can stuff goes pretty far. Do a little research. Some seam sealers are direct to metal some are not. I prefer the urethane type seam sealers. Something like this. The 2 component sealers are nice, but expensive to use.
Fusor Direct to Metal Sealer/Adhesive

You don't want anything that's going to shrink back or crack and let moisture in. Seal up all the weld seams top and bottom, and cavity wax in the rails if you really want to protect it.
Click to expand...
Good advise. Id like to add some info about the DTM Fusor. The directions say you can paint it immediately but I would wait a few hours at least. Make sure you use a paint sealer. Don't just put color on it. Make sure it's the last thing you do before paint so it doesn't get dirty. It can be smoothed out or have a brush look. I use it for everything.
 
A bit spend perhaps, but I've had great success with 3M 08300 Ultrapro Autobody Sealant. Almost 8 years since applying in some areas and continues to have great flexibility. A real firm press with the thumb will cause it to yield slightly. Also paintable.
 
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