Need help with seam sealer.... - Chevelle Tech
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post #1 of 25 (permalink) Old Apr 2nd, 18, 2:03 PM Thread Starter
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Chuck
 
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Need help with seam sealer....

Which seam sealer is best for the underside of the car?
Floors, rockers, etc....I have all new rockers, floors, trunk pans, wheel tubs, firewall, etc...

Nothing is seam sealed. I am getting ready to spray SPI epoxy over the entire underside, seam seal, then top coat...

Need advice as in which seam sealer is best to use and YES this is my first time so be specific and list part numbers. Should I tape off the areas so that I just get a small area exposed to seal?

Chuck
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post #2 of 25 (permalink) Old Apr 2nd, 18, 2:13 PM
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post #3 of 25 (permalink) Old Apr 2nd, 18, 2:14 PM
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Re: Need help with seam sealer....

I have used the auto parts store brands. It is all good stuff. It won't come off of anything that it touches.
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post #4 of 25 (permalink) Old Apr 2nd, 18, 2:26 PM
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Re: Need help with seam sealer....

Any good auto paint store can set you up.
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post #5 of 25 (permalink) Old Apr 2nd, 18, 3:31 PM Thread Starter
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Re: Need help with seam sealer....

Quote:
Originally Posted by SPRSPT69 View Post
Any good auto paint store can set you up.
I have a hook up, just trying to find out what most have used so I can get an idea....

Preferring something like Fusor or SEM or similar but I have no clue which one cause there are a lot of types....

I prefer easy to use lol.....I dont mind buying the mechanical caulk gun either if it helps. I saw some FUSOR stuff that was like a twin tube and the gun was around $40 but I dont remember if that was for large or small cartridges....

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post #6 of 25 (permalink) Old Apr 2nd, 18, 3:50 PM
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Re: Need help with seam sealer....

3m 8656
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post #7 of 25 (permalink) Old Apr 2nd, 18, 4:18 PM
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Re: Need help with seam sealer....

3M 08300 Ultrapro Sealant

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post #8 of 25 (permalink) Old Apr 2nd, 18, 6:27 PM
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Re: Need help with seam sealer....

A two part product will be vastly superior to a 1 part product.
There are some direct to metal seem sealers on the market, IMO not something I would want on a restoration.

I would epoxy prime first then apply your seam sealer. No need to tape off the areas.

I've used this product for many years.
https://www.autobodytoolmart.com/3m-...waAogQEALw_wcB

If I went the fusor route I'd go with this.
https://www.autobodytoolmart.com/lor...l-p-40058.aspx
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post #9 of 25 (permalink) Old Apr 2nd, 18, 10:38 PM
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Re: Need help with seam sealer....

I've been using Fusor seam sealer for years. Great product.
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post #10 of 25 (permalink) Old Apr 2nd, 18, 10:42 PM
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Re: Need help with seam sealer....

Your hand that squeezes the sealant gun is gonna' hurt. See if you can rent or borrow a powered gun for doing this much sealing.

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post #11 of 25 (permalink) Old Apr 2nd, 18, 10:55 PM
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Re: Need help with seam sealer....

I bought the lowest cost used Ryobi caulk gun on ebay for 3 windshield installs and man I'm glad I did. I'll be using it for seam sealer also.
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post #12 of 25 (permalink) Old Apr 2nd, 18, 11:58 PM
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Re: Need help with seam sealer....

Quote:
Originally Posted by Greg P View Post
3M 08300 Ultrapro Sealant
X2, only it's 3m 08367 to be specific for black, and it's in a standard caulking tube.
I just used it on my '69 and having used a couple 1k and a few 2k products, this is my new go-to.
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post #13 of 25 (permalink) Old Apr 3rd, 18, 4:02 PM Thread Starter
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Re: Need help with seam sealer....

Quote:
Originally Posted by cheveslakr View Post
X2, only it's 3m 08367 to be specific for black, and it's in a standard caulking tube.
I just used it on my '69 and having used a couple 1k and a few 2k products, this is my new go-to.
This 3m 08367 is a 1k product and sufficient enough for all sealing?

Would this be a sufficient gun?
https://www.johnsonautobodysupply.co...tic-08990.html
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post #14 of 25 (permalink) Old Apr 3rd, 18, 7:48 PM
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Re: Need help with seam sealer....

Quote:
Originally Posted by ChuckD396 View Post
This 3m 08367 is a 1k product and sufficient enough for all sealing?

Would this be a sufficient gun?
https://www.johnsonautobodysupply.co...tic-08990.html
IMO, absolutely. I used it for everything but the rain gutters and inside the trunk jamb. In those areas I used another 3m 1k in gray, in a sausage tube. Only used gray due to the gray sealer under a silver topcoat. It was a tad firmer but either would work just fine for the gutters.

The 08367 needs only a store bought standard caulking tube.
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post #15 of 25 (permalink) Old Apr 3rd, 18, 10:30 PM Thread Starter
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Re: Need help with seam sealer....

Quote:
Originally Posted by cheveslakr View Post
IMO, absolutely. I used it for everything but the rain gutters and inside the trunk jamb. In those areas I used another 3m 1k in gray, in a sausage tube. Only used gray due to the gray sealer under a silver topcoat. It was a tad firmer but either would work just fine for the gutters.

The 08367 needs only a store bought standard caulking tube.


I have never used any type of seam sealer so is it easy to use?

Easy to dispense with standard caulk gun?


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