Have items #14 and #15.
#14 is, if I read that picture correctly is the rubber part inside of #15.
Problem is the #15 parts are badly pitted, so unless one only needs them as a sample to machine new parts not really worth much.
#18 looks to be a flat washer type part, I'd have to dig a bit deeper to see if I had those.
If there is any interest in the poor conditioned parts let me know.