The Dome Fiber Splice Closure houses, organizes, managse and protects fiber optic cables and splices. The closure provides a hermetic seal and provide IP68 rated protection when properly used with the provided grommet to seal cable entry and exits. The closure can accommodate buffer tube or ribbon fiber splices, when the appropriate splice tray is installed. To be included are the enclosure dome, appropriate tray organizer, and grommet kit.