Why????

I need the small bolt on piece that holds the power steering return (low pressure) line. This bolts to the front of the steering box with 2 7/16th's bolts. and has two different "O" style rings that fit into this fitting. I am not sure if this also requires any type of gasketing. The one on my box is leaking like crazy and even with trying several new "O" type seals, it just keeps leaking. It does not have any type of paper gasketing and I am not sure if it needs any, but I cannot get this part aftermarket and am getting very frustrated with the whole scene.It is not leaking at the hose or hose clamp but is leaking from the bottom of this fitting and i cannot see up there to see where/why it is leaking. Visual inspection of this fitting on my box does not show any signs of cracks etc....