On Mon, 13 Mar 2017 19:19:14 GMT, "Tekkie®"
wrote:


It's called ozone. Use plastic zip ties.

Will do, but it must be more than ozone. The entire bands were
subjected to equal amounts of ozone. Only the parts in contact with
the metal valves hardened. In fact, the rubber bands still in the
original opened package were fine. They saw the same amount of ozone
during those eight years.