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.
PIN Numbers
INFO button
► Setup
►Personal Information►PIN Number
Set a 4-digit PIN for protecting personal addresses and your home addresses.
Once
you set a PIN, you are prompted to ente ...
Power Mirror Actuator Replacement
Removal
Remove these items:
Mirror holder
Power mirror
Record the power mirror connector terminals location and the wire harness
colors. ...
Intermediate Shaft Removal (A/T)
Drain the transmission fluid. Reinstall the drain plug with a new sealing
washer.
Remove the right driveshaft.
Remove the shift cable cover (A).
Re ...