Seam sealer??

Discussion in 'Color is everything!' started by TimR, Sep 16, 2004.

  1. TimR

    TimR Nutcase at large

    Since we have lost so many threads, I will re-post this as I lost the info. I am looking for a seam sealer, the thick kind for filling up edges (on top of cowl for example) or gaps between seams....color black would be preferred.....

  2. Leviathan

    Leviathan Inmate of the Month

    ...should this be under "Parts Wanted"? :Brow:
  3. r72gs

    r72gs Another project........


    I used 3M brishable seam sealer, the color is gray. SEM sells a thick black sealer in a caulk tube. It's real thick and with an acid brush you can make it look brushed on. It stays "tacker" than the 3M stuff.
    Whats that stuff GM used? It almost seems like wax? Didn't work very well I suppose...
  4. LowRoad

    LowRoad New Member

    I have just done the area around the cowl, etc.. on my car. You are looking for 3M Heavy Body Seam Sealer. It is a two part compound that mixes itself through the use of a seam sealer gun. You just shoot it on the seam, smooth with a finger (I'd wear latex gloves), and voila..nice smooth seam.

    For the record, 3M products work perfectly fine in a SEM gun.
    If you have any questions about this stuff, PM or email me, I ahve been using it extensively...there are some tricks.

    For what it's worth, I like the 3M self levelling stuff also, but it can really only be used on a flat surface like a floor pan, or trunk.
  5. 67buickva

    67buickva Evil Kitty

    Are you talking about the thick black like material that is in the interior of the car? Like where panels meet each other? It also appears to be around the drain holes in the floor pan. Anyways, all of that stuff is now crumbling away in my car as I prep the interior for POR-15. Should this stuff be replaced? I'm assuming so. Thanks for the help.
  6. LowRoad

    LowRoad New Member

    Scrape all that sh*t up, take that floor down to bare metal,POR 15, prime while POR 15 is still tacky, re seam seal with self levelling seam sealer, then paint. :TU:
    My floor used to look EXACTly like yours, now it looks like this:

    Attached Files:

  7. LowRoad

    LowRoad New Member


    Attached Files:

  8. TimR

    TimR Nutcase at large

    I don't know what gm used but its almost like a body filler type stuff...kinda soft but none the less eventually gets hard and cracks.

    Reminds me of soft epoxy with microballoons in it...

    Thanks for the help everyone. The shop seam sealed things up but not to my I want to go over some areas again....

  9. LowRoad

    LowRoad New Member

    if you do a search on the "3M heavy Bodied seam sealer" you will find several vendors of it. It's not difficult to work with.
    Here is some basic info I cut and pasted:

    "3M Automix Heavy-Bodied Seam Sealer Two-part epoxy, heavy-body seam sealer for use in vertical or horizontal seams to match OEM sealers. Non-sagging, non-flowing, and excellent tooling. Fast cure-through. Paintable in 30 minutes to increase productivity. Apply directly over primed metal-matches OEM seams. Flexible over a wide range of temperatures. No shrinkage, cracking or outgassing. Work time = 10 minutes. Paintable = 30 minutes. "
  10. Doo Wop

    Doo Wop Where were you in '62?

    vinyl plastisol sealer
  11. LowRoad

    LowRoad New Member

    Sure makes a mess when you hit it with the wire cup brush on the grinder going full bore !! :laugh:
  12. 67buickva

    67buickva Evil Kitty

    Thanks so much for your reply. As you can see from the attached pic.....I still have a lot of cleaning to do. Your floor pan was in way better condition. Some areas of mine are questionable.

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