On Jul 22, 9:13*am, wrote:
On Wed, 22 Jul 2009 08:23:49 -0700 (PDT), mike

wrote:
As to not hijack this thread, if the OP was concerned about acidic
caulking effects on aluminum, he could pour vinegar in some aluminum
foil set in a bowl for a few hours or even overnight to see what
happens.

Aluminum *foil has always held up to such treatment for me without
damage.

The OP may want the job to last longer than that.

How long do you think the curing by-products hang around? Futher,
aluminum tanks are used for acid transport, including organic acids
like acetic acid:

http://tinyurl.com/kmcqkl

You may have to scroll down a few lines after you click the link.