I'm sick and tired of buying junk! I replaced this amtrol bladder for my hydronic heating system in 2000 when I bought my house, my ex bil installed a bigger wood boiler for me in 2011, by 2013 the bladder started leaking, so 13 years is good outbof it, I went to the plumbing store and bought this bladder, less than 4 years later it's leaking, they are made in USA! Rather than but one local I went on ebay to save a few bucks,and got another one, but I was thinking how can I "patch" this one, there were only 2 pin hole rust threw spots and it only runs at most 22 lbs pressure, I got to thinking about that flex seal commercial on tv, were you can cut the bottom out of a boat, flex seal it then ride around alligator infested swamps! So I got the idea to try rubberized under body coating I have in spray cans, I coated it, let it dry, coated it again ect and it finally stoped leaking. I do have the new tank ready to go should this idea go south! But it was worth a try right!