Fiber optic cable closures can be branching or connecting closures for outdoor use. They include, for example, splice cassettes as well as other passive elements for fiber management and protect the fibers against external influences. The cable entries of the fiber optic closures can vary in terms of diameter. For this purpose, different types of closures are offered which optionally have one or two oval feedthroughs for uncut pipe loops, as well as six or eight outputs for spur lines (inputs/outputs) and access cables. Depending on the type of cable and installation, suitable sealing sets are also available.