Macdee pneumatic flush rubber bellow diapragm

[richford1968]

Hi folks,
New thread so any help appreciated. My rubber diaphragm bellow for macdee quick flush toilet comes apart when flushing my toilet. It then proceeds to never stop running in to the toilet. I put the bellow back together and it fixes itself but not for long as it keeps happening. Are these rubber bellows supposed to be sealed? If so I will replace with a new one. I have attached photos for clearer understanding of what I'm asking. Thanks in advance for any info

 

[JCplumb]

Not sure with your exact model but they usually come apart, repairing them is a fools errand though, never lasts long. Get a new one