The Dome Type Splice Closure is made of high quality engineering plastic. Provides different port types, accessories, and different fiber core number optical connector closures for the fiber. The main applications for vertical fiber optic connector closures are cable television, telecommunications, and fiber optic networks. They are suitable for fiber optic connector protection in both straight-through and branch applications and can be used in antenna, pipe and direct-buried fiber optic cable projects. Dome Type Splice Closure provides with 4 fiber cable in-out round ports and the cable diameter is from ψ7-ψ18. it is widely applied to the splicing and distributing variable optical cables. This product is made of ABS and with the mechanical sealing structure filled with the sealing material. The external component and fastening piece are all made of the high-quality iron. It can be opened after sealing.