Patent ID: 8091932

Claim:
A coupling device for a tube comprising: a coupling piece with an insert end for the tube and a sealing organ which is suitable for realizing a seal around the tube inserted in the coupling piece, wherein the sealing organ comprises a series of elements which together form a ring enclosing the tube, and wherein the elements have been provided with at least one grip ring, extending over at least a part of the circumference of the tube, which said at least one grip ring is embodied with inwardly and/or outwardly pressed out first projections and second projections extending away from the surface of the grip ring, whereby the first projections and the second projections are provided with, in the plane of these projections extending first anchor teeth and second anchor teeth, wherein between the first anchor teeth and/or between the second anchor teeth, relative to the dimensions of these teeth, comparatively wide flat parts exist, which flat parts form part of said first anchor teeth and/or second anchor teeth.