IP68 Direct Buried Fiber Optic Splice Closure 24 Cores Dome Fiber Optic Joint Closure for FTTx Networks

The KCO-H12-48SZ is a mini-size, IP68-rated direct-buried dome fiber optic splice closure designed for reliable fiber jointing and protection. Constructed from durable ABS / PP plastic, it supports up to 24 fibers and is suitable for aerial, buried, and pipeline installations.

The optic fiber closure is applied in the junction and protection of fiber cables. It can be installed with aerial cable, buried in the earth, or placed in a pipeline. Both the outer housing and the fusing section are made of engineering-grade plastic for lasting durability.

• Excellent mechanical performance
• Superior resistance to aging
• High airproof, dampproof, and lightning-strike resistance
• Suitable for aerial cable, direct burial, or pipeline installation
• In and out channels available from two to six

• FTTx networks (FTTA, FTTB, FTTH, FTTO, and more)
• CATV systems
• Telecom and optic fiber communication systems

• Stretch: After sealing and inflating to 60 kPa ± 5 kPa, the box body 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 body 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; the box does not crack and pressure remains unchanged.
• Bending: After sealing and inflating to 60 kPa ± 5 kPa, with a tension load of 150 N and bending angle of ±45° over 10 cycles, no change in air pressure occurs.
• Torsion: After sealing and inflating to 60 kPa ± 5 kPa, with a torque of 50 N·m and torsion angle of +90° over 10 cycles, no change in air pressure occurs.
• Sealing Performance: At gas pressure 100 kPa ± 5 kPa, water bath soak for 15 minutes shows no bubbles; 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: After sealing and inflating to 60 kPa ± 5 kPa at +60℃ for 2 hours, the box shows no deformation or leakage.
• Low-Temperature Test: After sealing and inflating to 60 kPa ± 5 kPa at -40℃ for 2 hours, the box shows no deformation or leakage.
• Temperature Cycle Test: After sealing and inflating to 60 kPa ± 5 kPa, with -40℃ constant temperature for 2 hours per point over three cycles, pressure drop amplitude ≤ 5 kPa.

We can display your own brand logo on the goods, including cable, package bag, label, or any other location. Our OEM and ODM services are always ready. Please contact our sales team for the best support.

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

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