I have a JD 425 that has a small hydraulic leak at the lines connecting to the steering valve. I need to replace the O rings. As shown on the attached pic, the removed O rings seem to flat.
My question is, are the original rings round and became flat over the years or they are flat to begin with. I have replacement standard rings in my shop, but I just don't want to go to the trouble of replacing them twice if they are are not the right ones.