GJS-8002 is a round dome type. Hoop is used to fix and seal FOSC cover and base, and its installation is quite simple. GJS-8002 is provided with 4 fiber cable inlet/outlet ports and sealing is achieved by tightening nut. 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 ℃.