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.
CMP Pulse Plate Removal and Installation
Removal
Remove the air cleaner.
Remove the intake manifold chamber.
Disconnect the following engine wire harness connectors, and remove the
wire harness clamps ...
Rear Seat Control Cable Replacement
NOTE:
Take care not to tear or damage the seat covers.
Put on gloves to protect your hands.
Take care not to kink the cable.
The left rear seat is shown, the right rear ...
Parking Brake Lever Replacement
Release the parking brake lever fully.
Remove the center console.
Disconnect the parking brake switch connector (A) from the parking brake
switch (B).
...