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  1. #1

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    Seam Sealer Question

    Yes, it's time to discuss the fascinating world of seam sealers. (My gosh aren't we a lot of gear geeks).

    In any case, I bought some McNett Seam Grip Seam Sealer to seal up my D.I.Y SilNylon tarp. It came out more like silicone caulking than seam sealer. I think I'm going to peel it off and re-seal with something else. But what?

    I was expecting seam sealer to have a water-like viscosity which would seep into the seams and dry thereby sealing them. But this stuff looked like bathroom caulking and went on really thick. Did I just use the wrong stuff or is that what seam sealer is suppose to look like?

  2. #2
    Shotgunred's Avatar
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    I use Permatex flowable silicone, Thicker than water but thin enough to get into stitch holes. it also helps to have tarp pitched tight when sealing.

  3. #3
    Mr. Arrowhead pgibson's Avatar
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    Seam grip is not the stuff for a sil tarp. You want SilNet. It's the silicone based version. The seam grip is for polyurethane coated fabrics.
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  4. #4

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    Quote Originally Posted by pgibson View Post
    Seam grip is not the stuff for a sil tarp. You want SilNet. It's the silicone based version. The seam grip is for polyurethane coated fabrics.
    That sounds like the solution right there.

  5. #5
    flatline's Avatar
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    Quote Originally Posted by Shotgunred View Post
    I use Permatex flowable silicone, Thicker than water but thin enough to get into stitch holes. it also helps to have tarp pitched tight when sealing.
    plus one on Flowable Permatex.

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  6. #6
    Bubba's Avatar
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    Permatex is what I use as well. Silnet is good but harder to apply IMO.
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  7. #7
    Old Gorge Rat Hawk-eye's Avatar
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    Quote Originally Posted by flatline View Post
    plus one on Flowable Permatex.
    Another plus one on that ... once you use it ... makes everything else more of a chore than it needs to be. Gets in the needle holes mo'betta IMHO!

    Easier for me to control and do a neater job with too!

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  8. #8
    CB200T's Avatar
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    Check out his video on seam sealing. Very helpful.
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  9. #9
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    just about all the seam sealers i've run across, require thinning out with toluene so that it'll soak into the seam- rather than just smear onto the outside.

  10. #10
    Mountain Gout's Avatar
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    Anyone have a pic of a seam finished with permatex?
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