I got the same rubber "washers" in my rebuild kit from Kanter that you have in your picture above. The new rubber is not the same design as the old.
The rubber is there to keep the dirt out of the eccentric bushing and threaded stud. The original rubber seals had a sort of stepped profile that overlapped the eccentric bushing. The new rubber that is supplied in the kit is just a rubber washer, that is supposed to fit between the face of the eccentric washer and the face of the upper control arm.
I have only installed one side on my car, and was very dissapointed in the new rubber. I don't think it fits worth a ****. I had to get mine put together in one night to get my car on the road to Tulsa the next day, so I didn't have a chance to find anything else.
Not sure if there are any other suppliers of the correct rubber parts or not. If you find something better, let us know!
Pete
