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FOSCYL5 Dome Type Heat Shrinkable Fiber Optic Splice Closure

$18
★★★★★
* Ref. Price

Description

FOSCYL5 Dome Type Heat Shrinkable Fiber Optic Splice Closure (FOSC) is heat shrinkable sealing and suitable for uncut cables.

Specification:

ModelFOSCYL5
TypeDome type
Sealing StructureHeat shrinkable
Number of Inlet/Outlet ports5 ports
Cable Diameter1 port×36mm
Maximum CapacityBunchy: 96 fibers;Ribbon: 288 fibers
Capacity per Splice TrayBunchy: single layer: 12 fibers; dual layers: 24 fibers;Ribbon: standard: 6pcs; max.: 12pcs
Quantity of Splice Tray4pcs
Body MaterialPC
Sealing MaterialThermoplastic rubber
Assembling methodAerial, direct buried, pipelined, wall mounting, manhole
Dimension450(H)×205(D)mm
Net Weight3.1~3.4KG
Temperature-40℃~65℃

Main Components:

ItemNameUsageQuantity
1Housing (Cover)To protect splices of fiber optic cables1pc
2Splice TrayTo fix Fiber Splice Protective SleevesMax. 4pcs
3Fiber Holding TrayTo store loose tube fibers1pc
4Housing (Base)To fix internal and external structure1pc
5Plastic HoopTo fix Housing Cover and Base1pc
6Sealing GrommetTo seal Cover and Base1 set

Standard Accessories:

ItemNameUsageQuantity
7Heat Shrinkable Protective Tubes and Branching ClipTo seal fiber optic splice closureAs per capacity
8Fiber Splice Protective SleevesTo protect fiber splicesSame as capacity
9Nylon TieTo fix buffer tubes with fibers inside8pcs
10Grounding WireTo connect with grounding device1pc
11Abrasive ClothTo polish fiber optic cable1pc
12Labelling PaperTo label fibers1 set
13M10 WrenchTo screw nuts for strength member1pc
14Hanging HoopTo install on wall and pole1 set
15Heat Shrinkable Fixing Tube (Mass)To seal fiber cablesoptional
16Aluminum-foil PaperTo protect cable ports when heated1pc
17User ManualTo instruct installation1pc

Optional Accessories:

ItemNameUsageQuantity
1ValveTo perform pressure and sealing testing1pc
2Grounding DeviceTo derive metallic components of fiber cable1 set
3Buffer TubeTo protect fibers and be fixed on splice traysspecified
4DesiccantTo desiccate air in FOSC after sealing1 bag

FAQ

Q1: What is the main purpose and deployment flexibility of the FOSCYL5 Dome Type Fiber Optic Splice Closure?

A: The FOSCYL5 is a compact dome-type Fiber Optic Splice Closure (FOSC) utilizing heat-shrinkable sealing to protect optical fiber cable splices, including uncut mid-span cables. It is engineered for multi-environment outdoor deployments, including aerial, direct buried, underground pipeline, wall mounting, and manhole installations.

Q2: What cable port configurations and fiber capacities are available on the FOSCYL5 closure?

A: Port configurations and splicing capacities include:

  • Cable Entry Ports: Features 5 entry/exit ports, including 1 primary oval port (36 mm diameter) designed for uncut feeder cables.
  • Bunchy Fiber Capacity: Supports up to 96 bunchy fibers across a maximum of 4 splice trays.
  • Ribbon Fiber Capacity: Accommodates up to 288 ribbon fibers.
  • Splice Tray Capacity: Each tray supports 12 single-layer or 24 dual-layer bunchy splices, or 6 to 12 ribbon splices.

Q3: What are the physical dimensions, materials, and hardware included with the FOSCYL5?

A: Key technical specifications include:

  • Material Construction: Durable Polycarbonate (PC) outer body with thermoplastic rubber sealing grommets.
  • Dimensions & Net Weight: Measures 450 (H) × 205 (D) mm with a net weight between 3.1 kg and 3.4 kg.
  • Operating Temperature: All-weather rating operating reliably from -40°C to +65°C.
  • Included Standard Accessories: Comes equipped with up to 4 splice trays, 1 loose tube storage tray, heat-shrink protective tubes, grounding wire, hanging hoops, M10 wrench, abrasive cloth, labeling paper, and aluminum foil protection paper.

Q4: Who manufactures the FOSCYL5 splice closure and what is its reference price?

A: Manufactured by FirstFiber Technologies, the FOSCYL5 Dome Type Heat Shrinkable Fiber Optic Splice Closure carries a reference price starting at $18 USD.

Q5: How can I select capacity options and submit a quote request?

A: Select your target core capacity (24 Cores, 48 Cores, 72 Cores, or 96 Cores) on the product page and click “Add to Quote” for custom volume pricing or “Request a Demo” to submit an evaluation inquiry.

Customer Reviews

4.7 / 5.0 ★★★★★ Based on 53 customer reviews
Ciaran Gallagher
February 10, 2026

Deploying the FOSCYL5 dome closure across our municipal FTTx network expansion solved our mid-span feeder cable splicing requirements. The closure features a primary 36 mm oval cable entry port along with 4 round ports, enabling our field technicians to perform clean, uncut mid-span cable loops without severing active fibers. The 4 dual-layer splice trays efficiently organize up to 96 bunchy fibers (24 fibers per dual-layer tray), while the dedicated fiber holding tray neatly stores loose buffer tubes. Rated for extreme operating temperatures from -40°C to +65°C, its heat-shrinkable sealing system has kept internal splices bone-dry across both aerial pole-mounts and flooded manholes.

Anika Hansen
November 19, 2025

At a reference price starting at just $18 USD, FirstFiber's FOSCYL5 provides utility-grade protection at a fraction of the cost of legacy closures. Despite its compact 450 × 205 mm physical footprint, the closure accommodates up to 288 ribbon fibers, making it a future-proof choice for high-density subscriber backhaul lines. The included standard accessories—such as hanging hoops, an M10 wrench, grounding wire, nylon ties, and protective aluminum-foil paper—allowed our installation crews to mount and seal each dome quickly. It is an economical, high-quality solution for regional telecom infrastructure.

Tariq Al-Mansoor
May 25, 2026

We standardized on the FOSCYL5 for underground duct and direct-buried splicing contracts due to its tough Polycarbonate (PC) outer body and thermoplastic rubber sealing grommets. Weighing between 3.1 kg and 3.4 kg, the enclosure resists heavy soil impact and mechanical compression. We opted for the optional testing valve to perform pressure integrity checks before burying each unit. Whether configured for 24-core branch taps or fully loaded 96-core splice points, the FOSCYL5 provides exceptional cable organization and long-term environmental protection.

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