Joerg considered Wed, 04 Jan 2017
10:27:55 -0800 the perfect time to write:

On 2017-01-04 10:00, Jeff Liebermann wrote:
On Wed, 04 Jan 2017 07:27:48 -0800, Joerg
wrote:

I'll look into contact cement. Gene also suggested that. Cost is not so
much an issue but shelf life after opening is. The usual rubber cement
is toast only a few months after opening.

I've had the same experience. The problem with the leaking bottles
and tubes seems to be related to heat. My squeeze tube of contact
cement doesn't last very long after it's used once, so I'm not sure
that looking for a better glue is the right answer. A better way to
prevent outgassing seems to be a better approach. As David Scheidt
suggests, buying the rubber cement or whatever in a can lasts much
longer. I keep my can inside a plastic Ziploc bag, which seems to
help. I've considered putting it inside a glass jar, and pressurizing
the jar to above the vapor pressure of the solvent to limit loss by
evaporation. I've done this with some chemicals and drugs, but never
tried it with glue.

Also, be sure to test the strength of your contact cement joint.
There's nothing stronger than a vulcanized bond, so I'm fairly sure
that contact cement will not be as strong as a proper vulcanizing
patch. Whether it's strong enough is the question.


I'll ask the automotive place for vulcanizing fluid as David suggested.

As for preventing oxygen to get at it I am wondering whether CO2 would
work. I started making beer to trapping some of the CO2 generated during
fermentation shoud be easy. It comes out of the air lock.

The problem isn't oxygen getting in, it's the volatile solvent getting
out.