What is the shelf life for Hypalon 2 part glue

[ian mcconnell]

Purchased 5 ltrs to stick the tubes on with in December 06, always stored inside, did a minor repair last week, prep'd area well mixed up as normal applied 3 coats (thinly) with the appropiate waiting times, then went togeather perfect.

But went out for half a day, took it out the water and found both strips hanging loose.

Does the glue go off?

[jyasaki]

Hopefully someone who actually knows something will chime in, but I've found that older glue (especially previously opened cans) thicken too much to be useful. Not a matter of adhesion, rather I find it's workability.

Though, to be fair, I don't have unused cans of the stuff lying around, so it's not the best experience to apply to your case.

jky

[jwalker]

Originally Posted by jyasaki

...I've found that older glue (especially previously opened cans) thicken too much to be useful. Not a matter of adhesion, rather I find it's workability. jky

Yeh, I agree with jky. In desparation, I've even used glue that's set to stretchy in the tin and softened it with thinners. I used it to glue handles on fully expecting it to be less than good. Well, they're still there after 4 years and I often use them for mooring to a pontoon or ladder.

It sounds to me as though there is something else awry.

[ian mcconnell]

the glue still has the same consistancy as new, i am careful to add the catalyst to it in the correct quantities.

what i dont want to do is throw away the 2 1/2 ltrs ive got left, but at the same time i dont want to keep doing the same job over and over again.

another question? is there a right or wrong side of the hypalon to use, both my colours are very close to each other one side being darker?

[Jelly]

Hi Ian
Did you abrade the surfaces and wipe clean with thinners to make sure there was no oil etc there ?
hopefully one of the tube manufacturers on here will be able to give you a better answer.
If you do a search there was a how too done on patches
good luck
James

[jyasaki]

Originally Posted by ian mcconnell

another question? is there a right or wrong side of the hypalon to use, both my colours are very close to each other one side being darker?

I am under the impression that hypalon fabric consists of an outer layer of hypalon, a fabric reinforcement, and an inner layer of neoprene for airtightness.

I don't know how you'd tell the difference between the two layers.

jky

[ian mcconnell]

cheers jyasaki

thats what i suspected, im probley stuck the wrong side down!!!!

[jwalker]

Originally Posted by ian mcconnell

...thats what i suspected, im probley stuck the wrong side down!!!!

But the adhesive will adhere to both types of surface, thats how you can make an overlap seam.

[jyasaki]

Very true, Mr. Walker.

I would suspect surface prep as the culprit (or rather, lack or poor execution thereof.)

jky

[jwalker]

Moisture.