Not certain this yr. model spread is accurate. Parts diagram for 2007 has the above o-rings listed.Like I added, the current parts fiche from Partzilla is for 2008 bikes like mine and up. The fiche you posted is for a 2005 and below and that's what the op has, after I just looked.
Item 16 is a washer on his parts fiche.
Part numbers 23 and 24 are both O rings on the 2008 and up fiche. Funny how they are slightly different, but so is the SMC.
Honda Motorcycle 2007 OEM Parts Diagram for REAR WHEEL | Partzilla.com
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