unopened glue dries out?

I got a two year old Monkey Grip kit with no dried up
glue.

Quoted message said:

Ben Pfaff said:

I had a flat today. When I pulled out my (pretty old) patch kit, I
had to pierce the tube of glue, which was still factory sealed. The
tube appeared to be empty: even when I rolled the whole tube from
its bottom to the pierced end, I couldn't get anything out. I
assume this means that it dried out while it was sealed. Is that
normal? How old can an unopened tube of glue be before I should
consider throwing it out?

As with other things in the bicycle business, these glue tubes have
failed for ever and ever while manufacturers delude themselves into
believing the users don't put the cap on properly. I can show you
tube of glue, be that tire patch glue or tubular rim cement, that
dried out without the metal in the screw cap end ever being pierced.

These folks will tell you that "Hey! Who knows more about glue, we
who have been in the business fore eons, or some punk bicyclists who
can't properly screw on the cap?" The volatile essence of the glue
doesn't go through metal but it does leak through a pressure crimp at
the base of the tube, both from temperature and atmospheric pressure
change and the partial pressure laws that make it want to get out.

How long do these folks believe the tube would hold air if inflated?
Not at all! Well the evaporated solvent is no more viscous than air.

I actually ended up at my LBS, buying a tube of rim cement and popping it at the
front counter to prove to them that the two tubes they'd sold me were pre-dried.
Jerks
Ron

Bob said:

I use a 3M rubber cement and a piece of a donor tube for a patch (glue
on both surfaces). Does that make me a bad boy?

Rubber fetishist.

Sharp way of doing things if I may say so

"Sorni" <[email hidden]> wrote in message
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Quoted message said:

Bob said:

I use a 3M rubber cement and a piece of a donor tube for a patch (glue
on both surfaces). Does that make me a bad boy?

Rubber fetishist.