Amazon

https://www.amazon.com/gp/aw/d/B011B99B0I?psc=1&ref=ppx_pop_mob_b_asin_title

I thought oil as well. But it’s coming from the wrap it self. There is no oil else where in the area. The wrap is also completely dry.

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