Fiber optic Splice Closure

Fibconet-Fiber Optic Splice Closure Supplier in China

1.What is Splice Closure

Fiber optic closures provide space and protection for spliced fiber optic cables.
It can safely connect and stores optical fibers in the outside plant or inside buildings.
Its excellent mechanical strength and strong outer shell protect the fiber joint and fiber cables, ensuring that the joints are not damaged by the hostile environment.


① The closure casing is made of quality engineering plastics, and of good
performance of anti-erosion against acid and alkali salt, anti-aging, as well as smooth appearance and reliable mechanical structure.
② The mechanical structure is reliable and has the performance of resisting wild environments and intensive climate changes and serious working environments. The protection grade reaches IP68.
③ The closures are applicable to ribbon type optical cable and common
optical cable.
④ The splice trays inside the closure are turn-able like booklets, and have adequate curvature radius and space for winding optical fiber to make sure the curvature radius for optical winding 40mm.
Each optical cable and fiber can be operated individually.
⑤ The closure is of small volume, big capacity and convenient maintenance.
The elastic rubber seal rings inside the closure are of good sealing and
sweat-proof performance.
⑥ The casing can be opened repeatedly without air leakage. No special tools are required. The operation is easy and simple. The air valve is provided for the closure and used to check the sealing performan.

2. Advantages Of Our Product

5g Splice Closure manufacturer

● High-quality PC, ABS, and PPR materials optional can ensure harsh conditions such as vibration, impact, tensile cable distortion, and strong temperature changes.
● Solid structure, perfect outline, thunder, erosion, and adding resistance.
● A strong and reasonable structure with a mechanical sealing structure can be opened after sealing and can be reused.
● Well water and dustproof, unique grounding device to ensure the sealing performance, convenient for installation.
● The splice closure has a wide application range, with good sealing performance, easy installation, produced with high-strength engineering plastic housing, with anti-aging, corrosion resistance, high temperature, and high mechanical strength, and so on.

3. Raw Materials of Splice Closure

Most splice enclosure types are made with high-strength plastic or stainless steel, with structures designed for easy installation.
Design types can vary and offer options for placement in an outside plant or indoor building, with aerial and direct-bury approaches.
A hybrid fiber enclosure is designed to suit both 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

Main components

No. Name of components Quantity Usage Remarks
1 FOSC cover 1 piece Protecting fiber cable splices in whole Dimension:
2 Fiber optic splice tray (FOST) Max.8 trays Fixing heat shrinkable protective sleeve and holding fibers Bunchy: 12 cores/tray
3 Splitter tray 4 pcs Fixing splitter
4 Fiber holding tray 1 pc Hold the fiber with loose tube
5 Base 1set Fixing internal and external structure
6 FOSC clamp 1 set Fixing between FOSC cover and base
7 Sealing rings 1 set Big O-ring is used to seal FOSC cover and base.
Small gasket ring is used to seal inlet/outlet ports
1 pc of big O-ring,
8 pcs of small sealing ring
8 Velcro tape 1 No. To fix all trays
9 Tray wedge 1 No. To support the tray If the routing block and trays are in vertical position
10 Hose clamp(small) 2 pcs Use for fixing the fiber cable
11 Plastic gasket 8 set Protect elastic seal rings from corruption
12 Pressure testing valve 1 set After inject air, it is used for  pressure testing and sealing testing Optional component
13 Earthing deriving device 1 set Deriving metallic parts of fiber cables in FOSC for earthing connection Optional component

Main accessories and special tools

No. Name of accessories Quantity Usage Remarks
1 Heat shrinkable protective sleeve 120 pcs Protecting fiber splices
2 PVC adhesive tape 1 pc Enlarging diameter of fiber  cable for easy fixing
3 Nylon tie 24 pcs Fixing fiber with protective coat
4 Fiber cleaning/Tissue paper 100 sheets To clean fiber cables
5 Labeling kit 12 sets Labeling fibers
6 Special wrench 2 pcs Installing and tightening nut of reinforced core and nut (plastic) of  inlet/outlet ports
7 Silica gel 1 packet Put into FOSC before sealing for desiccating air
8 Transport tubes 1 No. Hitched to fibers and fixed with FOST, managing buffer.
9 Sealing tape 1 roll Enlarging diameter of fiber  cable which fits in with seal fitting
10 Emery Paper 1 No. Scratching fiber cable
11 Wall mounting kit 1 set For wall mounting
12 Pole mounting kit 1 set For pole mounting
13 Earthing wire 1 pc Putting through between earthing devices Optional accessory

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.

① Horizontal Design
The horizontal design is the most common option, probably because it is so versatile. This type of box is fairly flat or cylindrical in shape. It can be mounted aerially or buried underground. A horizontal closure can have various capacities, with some much higher than others. A standard, normal-capacity closure can have several splice trays, which have their own differing capacities for the number of cables they can handle. Of course, higher-capacity closures can fit many more. Common numbers for tray capacities include 12 and 24. Though designs and dimensions can vary, most horizontal boxes will follow similar specifications.

However it looks, a horizontal box needs to be waterproof, dustproof and have good resistance to compression. If attached to a pole or hung from wiring, these closures need to be held firmly in place, to avoid damage from weather and wind.

② Vertical Design
This design has a domed shape and is intended for buried applications, though you can use many of them above-ground as well. These closures can again take on several different configurations and capacities, with high-capacity versions and variations in the number of trays. They can also vary in the number of inlet and outlet ports available, to match the cable capacity. Reentry may or may not be critical, depending on the closure’s placement, but some boxes are designed for easier re-entry than others.

Again, the vertical designs need to retain protection from the elements. Seals and waterproof technology are especially important. These are often used underground, where those dangers are prevalent and can pose serious risks to the cabling inside. Keeping insects and dirt out is particularly important for underground closures.

③ Hybrid Fiber Enclosure
The hybrid fiber enclosure is capable of securing network fiber regardless of weather, temperature, or location making it the most versatile of the enclosures. This flexibility allows for wall, aerial, or cell installations. In addition, a compact design allows for pedestal mounting and below-grade applications. Adaptability is another benefit to the hybrid enclosure with grommets to suit a 48 count feeder cable (72 count max) and up to 12 Flat, Round, ROC®, or Speedflex™ drop fibers. The unit allows for grounding and can be pressurized if required.

8. Packing, transportation and storage

① This equipment packaging is moisture-proof and earthquake-proof. The accessories are packed first plastic
bags, then into the boxes with plastic bags for sealing. There are moisture-proof and earthquake direction signs
outside the boxes.
② It can’t be inverted in the transport and be free from rolling when carrying. Please load carefully and
prevent the collision. You should prevent it from heavy rain before installation. The temperature in the
transport should be controlled between-35℃ to +55℃.
③ The excessive accumulation of goods should be stored on the cartons. The treasury should away from the
erosion of corrosive gas equipment and the temperature should be below 45℃ and higher than -5℃, and
relative temperature should not be high in long-term(generally less than 75%).

9.Why Choose Us

① Surface and structure design for the products can be provided to meet a variety of demands.
② 3D sample can be offered before the mass production
③ Third-party service of full-process video audit and inspection of factory and products can be provided.


① How can we place an order?

After the agreement is made on the product parameters, we will make a proforma invoice for you to confirm.
As soon as advance payment (deposit) is received, we will arrange the production and delivery.
If you have your ship forwarder, we will use your ship forwarder to deliver goods;
While you don’t have a shipping forwarder, we can ship them by our agent shipping company which offers a competitive freight cost.

② What is the quality of your products?

All of our products are of high quality. We promise a 100% recall policy if products are unqualified, and we can write it into our contract.

③ How do you arrange the shipping?

Solution A: Fibconet takes care of everything.
Clients only need to collect cargo in a local port or wait for cargo delivery to their office.
There are two types of shipping methods available: by sea and by air
(Express courier – FedEx/ DHL/UPS/TNT/EMS. We can ship them according to your express account or ship them by our agent company. The delivery time is about four to seven days).
Solution B: Clients assign a Shenzhen logistic company to do the shipping,
Fibconet follows the shipping company’s instructions and finishes the delivery.

④ How can you guarantee the delivery time?

To avoid the delay, we have built a complete and professional procedure system from production to delivery.
We have rich experience in production and delivery.
We can regulate the penalty clause in the contract for the late delay.

⑤ What’s your best price for your passive fiber optic product?

Based on the quality and quantity of goods, we would quote the best matching price for you all the time.Please contact me if you want to get the latest price list.

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