Exhaust system question

[Jeff's72C10*]

Hi everyone. Been a long time since I've own one of these, like 25 years. Picked up a 72 C10 with a 350 in it a little over a year ago. A few weeks back it developed an exhaust leak on the drivers side pipe. PO seems to have put duels on it. Anyway, I took the pipe loose today and looks like the donut gasket is none existent anymore.

My question is according to the 72 service manual I have. It shows an extension in the pipe that seems to hold the gasket in place. This part was not there when I disassembled it. I would assume this part needs to be there?? Any advise would be appreciated, Thx

[Wrenchbender Ret]

They come with a short piece of pipe that fits snugly inside the donut. I used to make them by cutting a short piece off of an exhaust pipe tubing. That keeps the exhaust flame off the donut. Chevy dealers have an iron donut that stands up better.
George

[Jeff's72C10*]

Originally Posted by Wrenchbender Ret

They come with a short piece of pipe that fits snugly inside the donut. I used to make them by cutting a short piece off of an exhaust pipe tubing. That keeps the exhaust flame off the donut. Chevy dealers have an iron donut that stands up better.
George

Thank you sir for the info. Appreciate it.

[Astro-Balls]

Cool, I never knew that..

[geezer#99]

Look like the ones in here.
https://www.gardnerexhaust.com/exhau...aust-system-2/