Obs tank selector valve o rings

I have a hunch my truck is sucking air into the fuel lines after replacing the tank selector valve a while back, so I am wanting to replace the o rings that go inside of the fuel lines connecting to the tank selector valve. Does ford sell them? I didn't see them on riff raffs site.

Ford may have even discontinued them.

Dorman 800-013
May be other brands also.

Sent from my SAMSUNG-SM-G890A using Tapatalk