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.
Wiper Blades
Check the condition of the wiper blades at least every six months.
Replace them if you find signs of cracking in the rubber, areas that are getting
hard, or if they leave streaks and unwiped areas ...
Controls
This chapter explains how to operate the various controls necessary for
driving. ...
Accessories and Modifications
Modifying your vehicle, or installing some non-Honda accessories, can make it
unsafe. Before you make any modifications or add any accessories, be sure to read
the following information.
Accessor ...