Description
The 48-Core Dome Fiber Optic Splice Closure is a high-capacity, vertical joint box designed to protect fiber optic splices in even the most demanding outdoor environments. Featuring a robust red ribbon silicone sealing system, this closure ensures an airtight, watertight seal (IP68) for aerial, manhole, or direct-buried installations.
Whether you are performing a straight-through splice or branching off for a local distribution network, this dome closure provides the mechanical strength and internal space needed to maintain signal integrity over a 25-year lifespan.
Key Features
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High Core Capacity: Supports up to 48 fibers across multiple hinged splice trays (usually 4 x 12-core trays).
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Superior Sealing: Features a premium red ribbon gasket and mechanical/heat-shrink sealing options for maximum protection against moisture and dust.
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Rugged Construction: Made from UV-stabilized, high-impact engineering plastic (PP/ABS) to resist aging, corrosion, and temperature extremes.
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Easy Maintenance: The dome design allows for easy re-entry without specialized tools, making future expansions or repairs simple.
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Versatile Ports: Equipped with multiple round ports and one oval “express” port for uncut main cables.
Technical Specifications
| Feature | Specification |
| Max Capacity | 48 Cores |
| Splice Trays | 2–4 Trays (12 cores per tray) |
| Protection Grade | IP68 (Dust-tight and immersion-proof) |
| Cable Ports | 1 Oval Port (for uncut cable) + 3/4 Round Ports |
| Sealing Method | Mechanical Seal / Heat-Shrink |
| Operating Temp | -40°C to +65°C |
| Tensile Strength | $> 1000N$ |
| Material | High-Strength PC/PP Engineering Plastic |
Why Use This Closure?
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Red Ribbon Reliability: The specialized red silicone seal provides superior elasticity compared to standard black gaskets, ensuring a perfect vacuum seal even after multiple re-entries.
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Organized Management: The internal “booklet” style trays allow technicians to access specific fibers without disturbing adjacent splices.
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All-Environment Performance: Designed to withstand high pressure, vibration, and chemical exposure—ideal for telecommunications, CATV, and FTTH backbone networks.
Applications
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Aerial Deployment: Mountable on poles or hanging strands.
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Underground: Suitable for manholes, hand-holes, and direct burial.
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Network Infrastructure: Perfect for connecting main distribution cables to branch cables.
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