What is this tiny silicon rubber part?

What is this tiny silicon rubber part? I was cleaning my K400 this morning and pulled out the pod holder and the tray below that. This part was in the tray (pen shown for scale). I would guess it goes over one of the needles? Which way is up?
Asked by: Guest \| Views: 290

Total answers/comments: 3

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Guest [Entry]

I experienced the same issue recently. Keurig customer service could not provide an answer, because the model has been discontinued. They did, however, send me a replacement K-cup holder via priority mail. Upon my inspection of the new cup holder, I observed the silicone piece situated over the needle located inside and on the bottom of the cup holder. The larger circular end of this sleeve was closest to the top of the needle.

Guest [Entry]

Kevin Hollingshead appears to be the seal around the puncture needle. Take a look on here How to open and clean Keurig Coffee Maker at Step 2. Different model same idea.

Guest [Entry]

"thanks for the help !

here’s a picture of after replacing the silicon sleeve on the bottom needle"