Innovative design is horizontal type with one hinge in one side and open in another side. It is the most reliable FOSC with the simplest installation in the world. The FOSC is suitable for protecting fiber cable splices in straight-through and branching 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 splices during pulling, compressing, and impacting, bending, tensioning, axial tensioning.
It ensures long-term reliability and usage under ambient temperature from -40℃ to +75℃

Purpose: aerial, direct-burying, wall-mounting, Pipeline laying way
Dimension : 46.5x18x12CM
Cables Entry & Exit: 2Entry 2Exit
Cable Diameter (mm): 7-15
Sealing Structure : Sticky cincture or silicon gum material Sealing
Material: PC
Maximum capacity: 72 cores

Components: Seal tape, Insulation tape, Nylon tie, optical cable heat shrinkable sleeve, mental hook, seal fittings, numeral bar, retaining ring
Atmospheric pressure: 70-106KPa
Optic property: The spare fiber coiled in the fiber emplacing device; the fiber connector won't attenuate during the FOSC installation operation period.

Seal Performance: After the closures are sealed, then pressurized up to 100KPa±5KPa in water, immersed in 15 minutes, there are no air bubbles; Or observed for 24 hours, there is no change of air pressure.
Re-encapsulation Performance: The closures are pressurized up to 100KPa±5KPa in water, immersed in 15 minutes, there are no air bubbles; Or observed for 24 hours, there is no change of air pressure after three times of repeat encapsulation
Uses and properties:
It is belonged to open structure airproof tie-in system of machine pressure.
It is used for the protective connection between two or more optical cables
Suitable for single core fiber optic cable and ribbon fiber optic cable
Main Technical Indexes:
1.Airproof performance: Airing pressure inside box 100Kpa, pointer immovability after 24 hours or no air bell within 15min when parked in the common temperature water.
2. Re-encapsulation performance: no change in the index of air-proof performance after three times of repeat encapsulation