Closure element for a container made of particularly sheet type material

A closure element (1) of a bag-type container from foil-type material, the closure element having a base (5) which comprises a spout (12) which defines a passage (13) and a lid member (3) mounted to the base (5) to clear and close the passage (13), wherein said lid member (3) comprises a cylindrical protective element (43), wherein said cylindrical protective element (43) has a larger diameter than said spout (12), and wherein the closure element (1) has a transport state in which the lid member (3) is attached to the base (5) via at least one predetermined breaking point (61), and an installation state in which, after separation of the predetermined breaking point attachment, the lid member (3) can rotate relative to the base (5) from an open position to a locked position in which the lid member (3) is removably held at the base (5) by a detent mechanism, wherein said detent mechanism is formed by at least two pairs of hooks (23, 73), wherein a first hook of each pair is fixed at the base (5) and a second hook of each pair is fixed at said cylindrical protective element (43) to engage with each other in a detent manner in the locked position.