The "Teflon" rings are actually a corrosion inhibitor to keep the steel line from siezing to the aluminum casting They can be slightly heated and put them onto the lije with a lsight turning motion as if you are threading them onto the line threads. Continue with them until they seat into the open areas past the threads of the lines. Ford power steering lines are self sealing and require no O-rings for internal seal, as he had stated the ford Lines do allow swivel movement and should only be tightened to approximately 15-25 lbs torque as the casting is aluminum. Do NOT forget to transfer the Back pressure relief valve from the old unit to the new one on the high pressure line port! This valve looks like a mushroom out of the unit with a small spring retained bored hole and a spring retained cover in the center to allow fluid to go into the unit, but not seep out. Also, the Steering connector is Notched ovally to ensure that when you change the units steering coupler to the units Pinion/input shaft, It will not be misaligned! I have worked for 13 years Remanufacturing Steering and driveline components in Michigan. I also am a State Certified Mechanic in Stering and Suspension and have changed several hundred of these units. After installation be sure to get the vehicle to an alignment shop. Hope this post helps.
--Thomas