Plug-in coupling

A plug-in coupling comprising:

• a base body;
• an annular sealing element;
• a clamping ring;
• and
• an annular body which is connectable to the base body, wherein
• an inserted pipe end in sealing contact with the sealing element can be fixedly secured in the plug-in coupling by the clamping ring,
• the sealing element is arranged in an annular groove in the base body and has two sealing beads which contact an inside surface of the inserted pipe end,
• the annular groove of the base body has a radially outwardly directed holding body which engages in a radially inwardly arranged annular groove of the sealing element,
• the two sealing beads of the sealing element are substantially circular in cross-section, with their respective circular cross-sections located essentially tangential to a cylindrical inner surface of the sealing element and oriented essentially perpendicular to the cylindrical inner surface of the sealing element and parallel to a longitudinal axis of the sealing element,
• the two sealing beads are longitudinally separated by a connecting part having a length greater than a radius of either sealing bead circular cross-section, and
• the annular groove of the sealing element is arranged between the two sealing beads, outside of a circumference of either sealing bead.