Fuel filter o-ring help, please

[cire]

Hello all,
In a pinch and need help. I just need to verify that the fuel filter gas lines DO have a o-ring on them. Sorry for the dumb question. I am in the middle of a project and just need to know quickly. 1990, C1500, 5.7, 2-wheel drive
please & thank you

 

[Nad_Yvalhosert]

Confirmed.
GM fuel filters with threaded lines do indeed have an o-ring on the male end.

 

[cire]

Thank you. Much appreciated.