Remove the factory axleshaft bronze bushing from the used spindle by tapping it from inside out with a long steel punch. Install the Front Range seal where the bushing was. Grease the seals prior to installing the spindle on the axleshaft. This is crucial for any seal, as it will tear quickly before the oil arrives to lubricate it. Clean the mounting surfaces and lay on a bead of RTV as you did with the ring, and then install the spindle.