O-ring compatible with the Francis Francis X1 Classic, X5 Classic, or X3 Classic machines. The o-ring seals the top of the handle to the group head, whether you are utilizing the ground coffee handle or ESE pod handle. If you are using a pod handle the o-ring fits around the top of the pod.
If you are using a ground coffee handle the o-ring presses into a groove in the lower part of the two part tamper. SH70 RED SILICONE OR D.42 T=4