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FOSCYN5 Dome Type Heat Shrinkable Fiber Optic Splice Closure

$27
★★★★★
* Ref. Price

Description

FOSCYN5 Dome Type Heat Shrinkable Fiber Optic Splice Closure (FOSC) is heat shrinkable sealing and suitable for uncut cables.

Specification:

ModelFOSCYN5
TypeDome type
Sealing StructureHeat shrinkable
Number of Inlet/Outlet ports5 ports
Cable Diameter1 port×38mm, 4 port×20mm
Maximum CapacityBunchy: 144 fibers;Ribbon:432 fibers
Capacity per Splice TrayBunchy: single layer: 12 fibers; dual layers: 24 fibers;Ribbon: standard: 6pcs; max.: 12pcs
Quantity of Splice Tray6pcs
Body MaterialPC
Sealing MaterialThermoplastic rubber
Assembling methodAerial, direct buried, pipelined, wall mounting, manhole
Dimension470(H)×210(D)mm
Net Weight2.5~3.3KG
Temperature-40℃~65℃

Main Components:

ItemNameUsageQuantity
1Housing (Cover)To protect splices of fiber optic cables1pc
2Splice TrayTo fix Fiber Splice Protective SleevesMax. 6pcs
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
13Hanging HoopTo install on wall and pole1 set
14Heat Shrinkable Fixing Tube (Mass)To seal fiber cablesoptional
15Aluminum-foil PaperTo protect cable ports when heated1pc

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 application and structural design of the FOSCYN5 Dome Type Splice Closure?

A: The FOSCYN5 is a dome-type Fiber Optic Splice Closure (FOSC) featuring reliable heat-shrinkable sealing engineered to protect fiber splices, including uncut mid-span cables. It is built for multi-environment deployments, including aerial, direct buried, underground pipeline, wall-mounting, and manhole installations.

Q2: What are the primary cable entry port and fiber capacity specifications for the FOSCYN5?

A: Port and capacity specifications include:

  • Entry/Exit Ports: 5 total ports (1 oval port × 38 mm diameter; 4 round ports × 20 mm diameter).
  • Bunchy Fiber Capacity: Up to 144 fibers across a maximum of 6 splice trays (12 fibers per single-layer tray / 24 fibers per dual-layer tray).
  • Ribbon Fiber Capacity: Up to 432 fibers.

Q3: What are the material construction, physical dimensions, and operating conditions of the FOSCYN5 closure?

A: Technical specifications include:

  • Body & Sealing Materials: Polycarbonate (PC) outer body with thermoplastic rubber sealing.
  • Dimensions & Weight: 470 (H) × 210 (D) mm body | 2.5 kg to 3.3 kg net weight.
  • Temperature Rating: Designed to withstand severe outdoor environments from -40°C to +65°C.
  • Included Components: Features 1 fiber holding tray, heat shrink protective tubes, grounding wire, hanging hoop set, and aluminum-foil heat protection.

Q4: Who manufactures the FOSCYN5 splice closure and what is its reference price?

A: Manufactured by FirstFiber Technologies, the FOSCYN5 Dome Type Heat Shrinkable Fiber Optic Splice Closure carries a reference price starting at $27 USD.

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

A: Select your required capacity option (ranging from 24 Cores to 144 Cores) on the product page and click “Add to Quote” for a volume quotation or “Request a Demo” to submit an evaluation inquiry.

Customer Reviews

4.7 / 5.0 ★★★★★ Based on 61 customer reviews
Sean O'Brien
March 14, 2026

Deploying the FOSCYN5 dome closure across our regional network expansion solved several mid-span cable protection issues. Featuring heat-shrinkable sealing designed specifically for uncut cables, it allows our field crews to splice branch lines cleanly without cutting main feeder lines. The 5 entry ports—comprising 1 main oval port (38 mm) and 4 round branch ports (20 mm)—provide ample routing flexibility for multi-directional branching. Constructed with a durable polycarbonate body and rated for temperatures from -40°C to +65°C, it performs flawlessly in both aerial and manhole environments.

Hannah Schmidt
December 5, 2025

At a reference price starting at just $27 USD, FirstFiber's FOSCYN5 offers exceptional durability and high fiber density for commercial distribution runs. The compact 470 × 210 mm chassis fits easily inside tight underground pipelines, manholes, and wall-mount enclosures. Its internal tray architecture supports up to 6 splice trays, accommodating up to 144 bunchy fibers or 432 ribbon fibers. The included fiber holding tray, grounding wire, and hanging hoop set made out-of-the-box installation straightforward for our field technicians.

Carlos Mendoza
July 18, 2026

We selected the FOSCYN5 for direct buried and duct fiber splicing projects due to its tough polycarbonate housing and thermoplastic rubber sealing structure. Weighing between 2.5 kg and 3.3 kg, the unit is lightweight enough for easy aerial mounting while remaining sturdy under heavy soil pressure. Each dual-layer splice tray cleanly holds 24 bunchy fibers, keeping loose buffer tubes safe and organized in the dedicated storage tray. It is a thoroughly dependable, cost-effective splice closure for long-term outdoor cable management.

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