The sealing rings are synthetic resin with chamfered ends. Check the condition of the sealing rings, and replace them only if they are worn, distorted, or damaged.
For a better fit, squeeze sealing rings together slightly before installing them.

Apply ATF to the new sealing rings, then install them on the secondary shaft.

After installing the sealing rings, verify the following:
The rings are fully seated in the groove.
The rings are not twisted.
The chamfered ends of the rings are properly joined.
Audio Screen Control
AUDIO button (in DISC mode)
Control the audio system through the navigation screen.
Select a track.
► Select the Folder tab to display the
list of folders on M/WMA/AAC
discs having a f ...
Crankshaft Main Bearing Replacement
Main Bearing Clearance Inspection
Remove the bearing cap bridge, the main bearing caps, and main bearing
halves.
Clean each main journal and main bearing half with a clean s ...
Regulator Valve Body Disassembly, Inspection, and Reassembly (A/T)
Clean all parts thoroughly in solvent, and dry them with compressed air.
Blow out all passages except the air check valve filter.
Inspect the regulator valve body for scoring and ...