Hmmm...I really dont' want to use the flex joint because I can't weld and I don't think it'll be flexible enough for what I have in mind.

My application is as follows: I have a backup generator on my property and want to enclose it in a shed. I still need to vent the exhaust gasses though, so for that I have a separate pipe with its own support structure to do so.

However I need a way to connect the generator's exhaust with that extension exhaust...and due to massive vibrations I'm looking for a flexible connection.

I hope that made sense.

So in all honesty, I'm still looking for a fabric-like alternative...just something I can wrap around the connections of the two pipes...and flexible enough so that the vibrations don't damage the shed/pipe/generator itself. The seal doesn't have to be a 100%, just so taht most of the gas does get vented.

What are your thoughts about something like this or perhaps even this