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steve m
(smulvaney) - F

Locale: pdx
seam sealing xpac/silnylon on 10/04/2011 00:58:12 MDT Print View

would i use silicone sealant for a xpac-silnylon seam? thanks

Andrew Schriner
(lettheguydance) - F

Locale: Midwest
re: seam sealing xpac/silnylon on 10/04/2011 08:15:09 MDT Print View

good question. in the one instance where I have had such a seam on a pack (extension collar to main body), i used silicone on the silnylon side and seam grip on the xpac side. good results so far.

on the flip side, i can say definitively that silicone sealer will not stick well to a PU coated fabric (from firsthand experience before I knew you needed the right sealer for the right fabric). I've never tried seam grip on silnylon though, so I don't know for sure that it won't work, but I doubt it would.

hope that helps. cheers,
andy

jerry adams
(retiredjerry) - MLife

Locale: Oregon and Washington
Re: re: seam sealing xpac/silnylon on 10/04/2011 08:36:27 MDT Print View

Don't use seamgrip on silnylon, won't stick

Diluted silcone 10:1 with mineral spirits soaks into the threads and thus makes the seam much more waterproof even if it's PU fabric

steve m
(smulvaney) - F

Locale: pdx
tape? on 10/04/2011 09:50:32 MDT Print View

thanks for your replies. what about seam tape, if i design a flat felled seam with the xpac on the inside of the pack (i too am using silnylon collar on xpac body) can i just iron this stuff on and be good?
i realize seam sealing a pack is somewhat futile but i figure if it was reasonably easy why not?

jerry adams
(retiredjerry) - MLife

Locale: Oregon and Washington
Re: tape? on 10/04/2011 12:44:47 MDT Print View

I don't know about seam tape but

I try to make my packs waterproof. I use silnylon. Coat the entire inside surface after it's all done with silicone : mineral spirits. Stuff inside stays dry when the outside gets wet from rain.