Power steering seal?
I've never worked with rack and pinion setups much before so I'm not exactly sure what this line does. The two (smaller than the ones going to the pump) hard lines on the front of the rack exit from the gearbox on the driver side and run along the front of the rack towards the passenger side. One of them is pushing a LOT of fluid out from around the gearbox. I pulled the line and there is an O ring that might be 5mm in diameter.
I called my local stealership and after the guy finally pulled the right part number he said he could only order them in a pack of 10 and they are like $4 each lol. So he said I should just go get an O-ring assortment from Advanced or Autozone. I went and got a pack. I don't have the old one to compare to because I'm at work.
My biggest question is will a standard brown automotive O-ring assortment (says its fine for use in fuel systems) work in my PS? I don't want this thing falling apart in 50 miles lol. These O-rings are also just regular rounded ones. The one that I took out looked like it had a tapered edge to fit the the flange of the line better. Either it had a taper or it was just eaten up that bad. Does anyone know if the OEM o-ring is tapered or round?
. Thanks. 
