Patent ID: 8720955

Claim:
A connecting device for connecting a flexible container to a flange or a connecting ring, comprising: an outer ring which has an inner surface radially on an inside and a connection side facing the flange or the connecting ring; and an inner ring which has an outer surface radially on an outside about which an end section of the container can be turned over, wherein the outer surface and the inner surface are formed at least partially congruent with one another, with the result that the end section can be clamped in between the outer ring and the inner ring in order to bring about a connected position, wherein the inner ring can be inserted into the outer ring from the connection side, and in the connected position the inner ring is supported in the outer ring facing away from the connection side, wherein the outer ring has radially on the inside a completely circumferential, radially inwardly open receptacle groove with a round cross section, wherein the inner ring is formed in one part and with a round cross section in one area of the outer surface, and wherein the inner ring is composed of a single flexible material that allows the inner ring to click into the receptacle groove in order to bring about the connected position.