Been using this method since I bought the membrane and found out it didnt make the scrubber hydrophobic!
I joined the ends of the o-ring toghether (to form a ring) with a drop of superglue.
I suggested to the factory they put a flat rubber 'o-ring' into the bottom of the groves that hold the membrane as that would be a proper fix. But heard they are using silicon.
I didnt like the idea of gluing the membrane in.