You probably don't need them all. You don't have to take them all, only what you need. The black rubber circles are helpful to protect the base of the  glass carafe of the French Press which is the part I assume you have. You may have lost the little piece that screws onto the part that presses down. Why am I parting with these? Both of my glass carafes have cracked and I got a stainless steel French Press so I no longer need these pieces.