Some Exhaust Help

Thanks ahead of time. Im having trouble searching the net I believe mostly because of terminology. Whats the part in the middle called? compression seal? flange? spacer? seal? I have a leak here, and welded the 'doughnut' back together, but am thinking I will need to buy a new one as well as the piece of pipe after it with the flange bend in the end... Is there a special name for that as well?? Sorry for the crudeness.

 

dough-nut.

 

Pretty much it. Doughnut gasket or flange gasket if it's flat. That is proper muffler shop terminology.

 

it could also be called a heatriser...

 

Take the old one to a good muffler shop and ask for a new donut like it.