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Seam sealer.. rust bullet.. what comes first?
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piercedvw
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PostPosted: Wed May 16, 2007 7:20 pm    Post subject: Seam sealer.. rust bullet.. what comes first? Reply with quote

Ok.. dumb... but kinda not.. I've got new welds in areas.. seam seal and THEN rust bullet?
.. and then in the engine area, I've scraped out all the old sealer (muddy mess underneath...)... light coat of rust bullet first then seam sealer??
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piercedvw
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PostPosted: Wed May 16, 2007 7:23 pm    Post subject: Reply with quote

Here's pics..
Berfore:
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During
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After
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toddyvol
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PostPosted: Wed May 16, 2007 7:48 pm    Post subject: Reply with quote

Rust Bullet, Seam Seal, Rust Bullet again
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slow36hp
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PostPosted: Wed May 16, 2007 7:49 pm    Post subject: Reply with quote

i would paint to seal the metal then seam seal and paint for cosmetics
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VWsArent4Hippies
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PostPosted: Wed May 16, 2007 8:21 pm    Post subject: Reply with quote

Depends on the kind of seam sealer you're using. SEM and 3M both make flexible seam sealers that can be applied over bare metal and painted on in about 30 minutes.
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piercedvw
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PostPosted: Wed May 16, 2007 8:21 pm    Post subject: Reply with quote

That's what I was thinking.. Thanks guys.
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fungi
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PostPosted: Sat Oct 11, 2014 2:23 pm    Post subject: It's an old battle Reply with quote

I tend to agree. Rust Bulllet then seam seal. It seams better to encapsulate. But the folks at RustBullet say different.

Any thoughts?


https://www.facebook.com/rustbulletkillsrust/photo...permPage=1

Quote:

Rust Bullet, LLC For seam areas it is recommended to use a non-silicone seam sealer prior to application of Rust Bullet.
December 27, 2013 at 8:21am

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Thrasher22
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PostPosted: Sun Oct 12, 2014 2:35 pm    Post subject: Reply with quote

With any rust treating product, it won't work unless it actually makes contact with the rust. But at the same time, you might have adhesion issues if you apply seam sealer over paint, especially of rust bullet has a glossy finish. If that is the case, you'd just need to scuff the surface.
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Northof49
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PostPosted: Mon Oct 13, 2014 9:03 am    Post subject: Reply with quote

It's the lack of paint ability why they say not to use silicone based. I did one side of my jeep with body shop seam sealer and the other side with black silicone. Both over epoxy primer. The silicone held up perfectly after 10 years of salty winters. The body shop seam sealer contracted and cracked in some places. When I peeled some silicone off, it showed perfect metal underneath. I used it on floor repairs too. Sealed out corrosion perfectly. Just doesn't take to painting well. It would make perfect undercoating if it were cheaper.
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fungi
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PostPosted: Mon Oct 13, 2014 11:17 am    Post subject: Spoke with Rust Bullet Rep Reply with quote

I ended up talking to a rep at Rust Bullet. There advise is two coats of Rust Bullet first. Then urethane based Seam Sealer. Then another coat of Rust Bullet.

Rust Bullet is urethan based so they should work well together. If the application directions are followed carefully. i.e. respect flash times etc...

I am using 3m Dynatron 552 & 550 Seam Sealer.

FYI: same advise for applying Body Filler, fiberglass, Primer

http://www.rustbullet.com/faqs/automotive
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