AC fitting question oring or no oring

[live4theking]

The line on the left gets an oring, but I cannot remember if the one on the right gets one. Of all the pictures I took there isn't an oring shown. So, I'm not sure... ugh.

 

[live4theking]

Wow, I found it I left the oring in the house connection. It's back in there a ways making it hard to see.