DF-8005 is a round dome type. Hoop is used to fix and seal FOSC cover and base, and its installation is quite simple. DF-8005 is provided with 4 fiber cable inlet/outlet ports, and sealing is achieved by tightening nut after inserting fiber cable. The FOSC is suitable for protecting fiber cable splices in straight-through and branching applications. It can be placed in aerial, underground, wall mounting, handhole mounting and duct mounting applications. Based on an advanced formula, the plastic parts are made of injection-molded, high-strength engineering plastic PC by numerical control equipment, therefore effectively prevent products from aging caused by coldness, heat, oxygen and ultraviolet radiation. The strong housing and main components provide fire resistant, waterproof, and quakeproof while protecting closure during pulling, torsioning and impacting. It ensures long-term reliability and usage under ambient temperature from -40 to +65. Advanced internal structure design Easy and fast to fix fiber cable. Easy to re-enter, it never requires re-entry kits The closure is spacious enough for winding and storing fibers Fiber Optic Splice Trays (FOSTs) are designed in SLIDE-IN-LOCK and its opening angle is above 90 The curved diameter meets with international standard. Easy and fast to increase and reduce FOSTs. Innovative elastic integrated seal fitting All of the above features make it more easy and convenient for installation, maintenance and reuse. If required, the earthing deriving device can be ins- talled on the housing of FOSC for deriving metallic parts of fiber cable for earthing connection . Pressure testing valve can be installed as well for pressure testing and sealing testing after injecting air.