Frank frankdotlogullo@comcastperiodnet wrote in
:

C & E wrote:
I had bought a small bottle of Sumo, urethane glue about 8 months ago
and found a project for it today. I was shocked when I found the
bottle to be firm and, when I opened it the glue was more firm than
usual. I got what I needed and pitched the rest. That was a pretty
expensive bottle considering that I only got one use.

Finally, the question. What IS the shelf life of **unopened**
urethane glue?

ISTR Wood Magazine saying one year,UNopened.
(trouble is,you don't know how long the bottle was on the store shelf.)

They have done some glue tests,and you may be able to search their web
site.

I had a similar sized bottle of Gorilla Glue and it
lasted much longer even though it had been used and there was air in
the bottle. I did store it on its head but still...

TIA,
Chuck


Traces of moisture will cause isocyanate glues to gel. Even plastic
is permeable even when tightly sealed. I would expect an expiration
date for unopened material.




--
Jim Yanik
jyanik
at
kua.net