A common P6 O-ring works well as a replacement. Guiding the tube back in around the heat shield takes some patience, but it's pretty straightforward otherwise.
pmbrunelle
MAR 27, 10:41 AM
I used a pack of "Master Plumber" AS568 O-rings from the plumbing section of the hardware store.
I used the AS568-010 O-ring.
[This message has been edited by pmbrunelle (edited 03-27-2021).]