steering rack

[JakeP]

In process of replacing steel pipes on steering rack. There are two feed lines which I assume are double flare joints. The remaining two are listed as inlet from pump and outlet to pump tank. Have removed the inlet pipe which has a rubber type o-ring as a seal. Is this o-ring a typical o-ring or does it have squared off edges, hard to tell by looking at the one I removed. I have found a source for factory new lines but do not know if the O-rings are included and if they would reliable after sitting 20 some years. Thanks for any help or opinions!