Fiber optic Splice Closure

Fibconet-Fiber Optic Splice Closure Supplier in China

1.What is Splice Closure

Fiber Optic Splice closure is a protective device to connect and store optical fibers in outside plants or inside buildings.

It provides ample space and protection for spliced fiber optic cables, ensuring that splice closure is undamaged by the harsh environment.


  • Strong outer shell and excellent mechanical strength to protect fiber joint and cable
  • Made of quality engineering plastics with anti-erosion properties against acid, alkali salt and anti-aging properties
  • Reliable mechanical structure with the ability to resist wild environments, intensive climate changes and serious working environments (IP68 protection grade)
  • Applicable to both ribbon-type optical cable and common optical cable
  • Turn-able splice trays with adequate curvature radius and space for winding optical fiber to ensure a curvature radius for optical winding of 40mm
  • Each optical cable and fiber can individually operate
  • Small volume, big capacity and convenient maintenance
  • Elastic rubber seal rings inside the closure provide excellent sealing and sweat-proof performance
  • Casing can be opened repeatedly without air leakage
  • No require special tools for operation
  • Air valve provided for the closure to check the sealing performance

2. Advantages Of Our Product

5g Splice Closure manufacturer

Fibconet splice closure offers the following features:

High-quality materials

Made of PC, ABS or PPR to ensure durability in harsh conditions, such as

  • vibration
  • impact
  • tensile cable distortion
  • extreme temperature changes.

Sturdy construction

Solid structure, perfect outline and resistance to thunder and erosion.

Mechanical sealing

Strong and reasonable structure that can be opened and reused after sealing.

Water and dustproof

IP68 protection against water and dust, with a unique grounding device to ensure sealing performance and easy installation.

Wide application range

Suitable for various applications, with good sealing performance and high-strength engineering plastic housing, that is resistant to aging, corrosion, high temperature and high mechanical stress .

3. Raw Materials of Splice Closure

Most splice enclosures are made of high-strength plastic or stainless steel and feature designs that allow for easy installation.

Enclosures come in various types to accommodate placement in both outdoor and indoor settings, with options for aerial and direct-bury approaches.

Hybrid fiber enclosures are also available to suit above and below-grade applications.

4. Specification of Splice Closure

Dimension and capacity

Outside dimension (Height x Diameter) 387mm×279mm×197mm
Weight (excluding outside box) About 2850g
Number of inlet/out ports Fiber cable 10 pcs
Diameter of fiber cable Main fiber cable Φ7~Φ16mm,
Branch cable Φ5~Φ11.5mm
Capacity of FOSC Bunchy: 12-96cores

5. Structure of Fiber Optic Splice Closure

fiber optic splice closure

6. Standard Accessories

splice closure

  • Tag paper:1pcs
  • Sand paper :1pcs
  • Silver paper :1pcs
  • Cleaning tissue:1pcs
  • Insulating tape:1pcs
  • Cable tie:3mm*10mm 8pcs
  • Fiber protective tube:1 pcs
  • Heat-shrink sleeve:1.0mm*3mm*60mm 96\144pcs
  • Heat shrink tubing:1 bag
  • Pole accessories:1 pcs(Optional Accessories )
  • Pressure testing valve:1pcs (Optional Accessories )
  • Earthing deriving devicepcs:1pcs(Optional Accessories )

7.The Types of Fiber Optic Closures

There are three main types of fiber optic closures, intended for different placement options. Both types of closures can have a lot of variation in terms of trays and capacities, but they use similar materials like durable plastics and protective mechanisms such as seals made of gels, gaskets or pull-and-shrink tubing.

Horizontal Design

The most versatile splice enclosure option is the horizontal design, which can be cylindrical or flat in shape.

It can be aerially or buried underground mount, and have great capacity. A standard closure can have several splice trays, each with its own capacity for handling cables.

Common tray capacities include 12 and 24, though higher-capacity closures can handle many more.

Regardless of design, a horizontal splice enclosure must be waterproof, dustproof, and able to withstand compression.

If attached to a pole or wiring, it must be securely fastened to prevent damage from weather and wind.

Vertical Design

The vertical splice enclosure design is intended for both buried and above ground applications.

These closures come in different configurations and capacities, with variations in the number of trays and inlet/outlet ports to match cable capacity.

Vertical enclosures must also protect against the elements, especially if used underground where exposure to water and dirt poses a risk to the cables. Seals and waterproof technology are essential to keep out insects, dirt and moisture.

Hybrid Fiber Enclosure

The hybrid fiber enclosure is the most versatile of the enclosures, capable of securing network fiber in any weather, temperature, or location. This flexibility allows for wall, aerial or cell installations, as well as pedestal mounting and below-grade applications.

Other benefits of the hybrid enclosure include:

  • The ability to accommodate different cable counts and fiber types, with grommets for up to 48 count feeder cable (72 count max) and up to 12 Flat, Round, ROC®, or Speedflex™ drop fibers.
  • Grounding capabilities for added safety.
  • Pressurization options if required to meet specific needs.
  • A compact design that offers adaptability and flexibility.

8. Packing, transportation and storage

The equipment packaging is designed to be moisture-proof and earthquake-proof, with accessories packed in plastic bags and sealed in boxes. Boxes are marked with moisture-proof and earthquake direction signs.

During transport, it is important to:

  • Avoid inverting or rolling the equipment.
  • Load the equipment carefully to prevent collisions.
  • Protect the equipment from heavy rain before installation.
  • Control the temperature during transport between -35℃ to +55℃.

When storing the equipment, it is important to:

  • Store excessive goods on cartons.
  • Keep the equipment away from corrosive gas and store it in a location with a temperature between -5℃ and 45℃.
  • Maintain a relative temperature of less than 75% for long-term storage.

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