A Fiber Dome Closure, also known as a fiber optic dome splice closure, is essential for protecting fiber optic splices in outdoor networks. Its dome shape with an IP68 rating is suitable for harsh outdoor environments, including aerial, wall, pole mount, and direct burial applications. Various sealing methods are employed to prevent environmental ingress and are categorized as Mechanical Seal, Heat-shrink Seal, and Gel Seal. Proper selection and installation of the dome closure are crucial for the long-term reliability of the fiber optic network.