i'm replacing all of my exhaust short of the headers. there was no gasket between the beginning of my exhaust pipes and the back of my headers when i removed my pipes. there was just a dome like ring. do i replace this ring? where can i get these rings? or do they not need to be replaced?

thanks guys

 

Yes the rings are the gaskets I bought some from advance auto parts for about $10 a piece


Other local auto parts should have it

I think they should be replaced there not that expensive but its up to you

 

Sometimes, you can find them online for about 3 bucks!