Does DOW 795 ever cure, bond or dry? - Page 2 - SailNet Community
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post #11 of 19 Old 10-26-2012
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Re: Does DOW 795 ever cure, bond or dry?

Dow 795 is great stuff, but definitely has a shelf life. It's an architectural adhesive/sealant for glass. I've found it to be very strong, highly elastic. When it's past it's shelf life, though, it has a very funny cure. If it's too old, you can tell as soon as you apply it- it feels more like polysulfide than silicone.

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post #12 of 19 Old 10-26-2012 Thread Starter
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Re: Does DOW 795 ever cure, bond or dry?

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Dow 795 is great stuff, but definitely has a shelf life. It's an architectural adhesive/sealant for glass. I've found it to be very strong, highly elastic. When it's past it's shelf life, though, it has a very funny cure. If it's too old, you can tell as soon as you apply it- it feels more like polysulfide than silicone.
On the tube is stamped Oct 10 -- so i assume Oct. 2010 -- is it too old? Will it eventually to the job or do I need to re-do the windows?
Also I had just wrapped the nozzle of the leftover tube with some saran wrap and when I tried it early this morning the stuff came out easily as if I had just broken the seal - is this normal?

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Last edited by anerussis; 10-26-2012 at 01:42 PM. Reason: spelling
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post #13 of 19 Old 10-26-2012 Thread Starter
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Re: Does DOW 795 ever cure, bond or dry?

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On the tube is stamped Oct 10 -- so i assume Oct. 2010 -- is it too old? Will it eventually to the job or do I need to re-do the windows?
Also I had just wrapped the nozzle of the leftover tube with some saran wrap and when I tried it early this morning the stuff came out easily as if I had just broken the seal - is this normal?
Just found the Dow specs for the Dow 795 - and now I realize whats happening ---" In totally confined joints (the sealant
requires atmospheric moisture for cure)"
In using this Dow 795 the more is not better- My window situation is because I believed the opposite and pumped as much of this stuff as I could in the joints. Also I think the reason my small test pieces did not bond is because the bead I applied was in the center of the pieces and sitting at the corner of my office desk and since there was no moisture present the silicone did not cure.
I would include the specs in pdf format but I don't know how.

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post #14 of 19 Old 10-26-2012
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Does DOW 795 ever cure, bond or dry?

I believe you got some old stock and it will never cure remaining like silly putty forever. I got sold old stock as well for my windows and contacted Dow. They told me never to use 795 beyond its use by date. Oh what fun peeling all that stuff off! The vendor gave me fresh tube and it cured with no problems. Sorry for the bad news.
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post #15 of 19 Old 10-26-2012
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I'm going to slide this thread into a more appropriate forum.
Wow! The moderator is a BABE......how nice!
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post #16 of 19 Old 10-27-2012
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Re: Does DOW 795 ever cure, bond or dry?

From Select Plastics - the largest hatch remanufacturer in the business - temp has to be above 50 F for the entire 21 day cure.
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post #17 of 19 Old 10-27-2012
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Re: Does DOW 795 ever cure, bond or dry?

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Wow! The moderator is a BABE......how nice!
Not only that - SHE hunts down & buys the boats in her family. I think her husband struck more gold than Sutters Mill there.

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We're pretty much doing the same with our next boat. He gives me his list of requirements, I find the boat and he writes the check. Works perfectly for us.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.

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post #18 of 19 Old 10-27-2012
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Re: Does DOW 795 ever cure, bond or dry?

PLEASE don't ever use the phrase "DOW 795" in a title again. I haven't checked my stocks in a few weeks and I almost had a stroke.

Mike
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post #19 of 19 Old 10-27-2012
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Re: Does DOW 795 ever cure, bond or dry?

Dow 795 is perfect for through deck chain plate seals as it never truly cures . If using it in a place where someone may step or touch, I found a sprinkling of talc over the out side helped.

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