This Geberit urinal siphon has been developed for urinals with a horizontal outlet to the rear. The siphon has a connection diameter of 50 mm, is made of plastic and has a water seal height of 50 mm for a reliable seal against sewer air. Delivery includes an EPDM sleeve for a suitable connection to the drainage system. The urinal siphon is suitable for urinals with a flush volume of 1 to 4 liters and is an original Geberit part for new construction, renovation or replacement of an existing siphon.