es ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??Span-life: 30 years.It is widely used for communication, network system, cabled T.V. of CATV, the fiber optic cable by networkUses and properties:It is belonged to open structure airproof tie-in system of machine pressure.It is used for the protective connection between two or more optical cables.Suitable for single core fiber optic cable and ribbon fiber optic cable.