This item was also used for overhaul of used CR 38. Although it is attached several days, it expands by Gasoline, it became difficult to fit in the groove and I experienced Overflow so I purchased again. In that case I also purchased Cherry's Packing with 1/8 the price as insurance. Since there seems to be some people being bonded when installing, I would like to use glued from next time.
I will use it a little while, I think that it would be better to replace it cleanly if the size diminishes gradually and the fitting into the groove of the Float chamber worsens. Previously, a small amount of adhesive was applied to the Float chamber and assembled, but it was troublesome to remove the adhesive that remained at the time of O-ring exchange with a toothpick or the like, and it stopped bonding.