IP68 Waterproof 4 Ports 48 Cores Fiber Optic Splice Closure Dome Fiber Optic Joint Closure for Outdoor FTTH Networks

The 4 Port Mini FOSC Dome Fiber Optic Splice Closure is a compact, high-performance enclosure designed for the junction and protection of optical fibers. Its outer housing and fusion components are constructed from strengthened polymer plastic, delivering excellent mechanical strength, aging resistance, and reliable sealing for demanding outdoor environments.

• Dome, vertical fiber splice type design
• Total of 4 cable ports: 3 round ports and 1 oval port
• 6–24 cores total capacity, supporting up to 4 trays
• Elastic integrated seal ensures a tightening fit
• Housing provides fire resistance, waterproofing, and quakeproof protection for splices
• Operating temperature range: −40 °C to +65 °C

• FTTX networks (FTTP, FTTH, FTTN, FTTC)
• CATV systems
• Optical fiber communication
• Testing equipment
• Fiber optic network convergence
• Optical fiber access networks
• Fiber data transmission
• Optical fiber video transmission
• Fiber multimedia systems
• Fiber Ethernet
• Photoelectric conversion systems

• Stretch: After sealing and inflating to 60 kPa ± 5 kPa, the box withstands 1000 N axial tension for 1 minute with no change in air pressure.
• Flattening: Sealed and inflated at 60 kPa ± 5 kPa, the box bears a horizontal uniform pressure of 2000 N/10 cm; the pipe withstands 600 N/10 cm without air pressure change.
• Impact: After sealing and inflating to 60 kPa ± 5 kPa, a 1 kg steel ball dropped from 1.6 m impacts the box three times — no cracking and no pressure change.
• Bending: Sealed and inflated at 60 kPa ± 5 kPa, with a tension load of 150 N and bending angle of ±45° over 10 cycles — no air pressure change.
• Torsion: Sealed and inflated at 60 kPa ± 5 kPa, with a torque of 50 N·m and torsion angle of +90° over 10 cycles — no air pressure change.
• Sealing Performance: Gas pressure 100 kPa ± 5 kPa, water bath soak for 15 minutes — no bubbles escape; no change after 24 hours under pressure.
• Insulation Resistance: At 1.5 m water depth after 24-hour soak, insulation resistance ≥ 2 × 10⁴ MΩ.
• Voltage Resistance: At 1.5 m water depth after 24-hour soak, 15 kV DC for 1 minute without breakdown or arcing.
• High-Temperature Test: Sealed and inflated at 60 kPa ± 5 kPa, at +60 °C for 2 hours — no deformation, no leakage.
• Low-Temperature Test: Sealed and inflated at 60 kPa ± 5 kPa, at −40 °C for 2 hours — no deformation, no leakage.
• Temperature Cycle Test: Sealed and inflated at 60 kPa ± 5 kPa, constant temperature at −40 °C for 2 hours per point, three cycles — pressure drop amplitude ≤ 5 kPa.

We offer full OEM and ODM support — add your brand logo to cables, packaging bags, labels, or any other location. Please contact our sales team to discuss your requirements and receive the best support.

• Standard export packing
• Carton box, wooden box, or wooden pallet

• International express: UPS, TNT, DHL, etc.
• International air freight: CA, AA, EA, etc.
• By sea
• Standard export sea ports: Shenzhen, Hong Kong, Ningbo
• Standard export airports: Shenzhen, Hong Kong, Hangzhou, Shanghai