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FOSCYH7 Dome Type Heat Shrinkable Fiber Optic Splice Closure 

$29
★★★★★
* Ref. Price

Description

FOSCYH7 Dome Type Heat Shrinkable Fiber Optic Splice Closure (FOSC) is heat shrinkable sealing and suitable for uncut cables.

Specification:

ModelFOSCYH7
TypeDome type
Sealing StructureHeat shrinkable
Number of Inlet/Outlet ports7 ports
Cable Diameter1 port×38mm; 6 ports×25mm
Maximum CapacityBunchy: 288 fibers;Ribbon: 864 fibers
Capacity per Splice TrayBunchy: single layer: 12 fibers; dual layers: 24 fibers;Ribbon: standard: 3pcs; max.: 6pcs
Quantity of Splice Tray12pcs
Body MaterialPC
Sealing MaterialThermoplastic rubber
Assembling methodAerial, direct buried, pipelined, wall mounting, manhole
Dimension515(H)×310(D)mm
Net Weight3.2~4.0KG
Temperature-40℃~65℃

Main Components:

ItemNameUsageQuantity
1Housing (Cover)To protect splices of fiber optic cables1pc
2Splice TrayTo fix Fiber Splice Protective SleevesMax. 12pcs
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 primary application and design of the FOSCYH7 Dome Type Fiber Optic Splice Closure?

A: The FOSCYH7 is a dome-type Fiber Optic Splice Closure (FOSC) featuring heat-shrinkable sealing specifically designed to protect fiber optic cable splices, including uncut cables. It supports a wide range of deployment methods, including aerial, direct buried, pipelined, wall mounting, and manhole installations.

Q2: What cable entry ports and fiber capacities does the FOSCYH7 closure support?

A: Port and splicing capacity specifications include:

  • Inlet/Outlet Ports: 7 total cable entry ports (1 main oval port × 38 mm diameter; 6 branch ports × 25 mm diameter).
  • Bunchy Fiber Capacity: Up to 288 fibers using a maximum of 12 splice trays (12 fibers per single-layer tray / 24 fibers per dual-layer tray).
  • Ribbon Fiber Capacity: Up to 864 fibers.

Q3: What are the material construction and physical specifications of this dome closure?

A: Technical specifications include:

  • Body & Sealing Materials: High-impact Polycarbonate (PC) body with thermoplastic rubber sealing.
  • Dimensions & Weight: 515 (H) × 310 (D) mm body | 3.2 kg to 4.0 kg net weight.
  • Environmental Rating: Operating temperature range of -40°C to +65°C.

Q4: Who manufactures the FOSCYH7 splice closure and what is its reference price?

A: Manufactured by FirstFiber Technologies, the FOSCYH7 Dome Type Heat Shrinkable Fiber Optic Splice Closure carries a reference price starting at $29 USD.

Q5: How can I select capacity options and request a volume quotation?

A: Select your required core capacity (ranging from 24 Cores to 288 Cores) on the product page, then click “Add to Quote” for volume pricing or “Request a Demo” for evaluation inquiries.

Customer Reviews

4.7 / 5.0 ★★★★★ Based on 15 customer reviews
Callum MacIntyre
February 5, 2026

Deploying the FOSCYH7 dome closure across our municipal underground network solved several sealing and cable-routing challenges. Designed specifically with heat-shrinkable sealing that accommodates uncut cables, this unit allows our splicing crews to execute mid-span cable loops cleanly without cutting main feeder lines. The 7 entry ports—comprising 1 main oval port (38 mm) and 6 branch ports (25 mm)—provide ample flexibility for multi-directional branching. Internal cable management is top-tier: the 12 dual-layer splice trays effortlessly organized our 288 bunchy fibers (24 fibers per dual-layer tray). Constructed with a high-impact polycarbonate body and rated for -40°C to +65°C operating temperatures, it has proven completely weatherproof in flooded manholes and direct buried installations.

Mateusz Kowalski
November 14, 2025

At a reference price starting at just $29 USD, FirstFiber’s FOSCYH7 delivers commercial-grade protection that rivals closures five times its cost. We deployed dozens of these closures on aerial pole mounts and wall-mounted distribution points during our regional FTTx expansion. The closure’s thermoplastic rubber gasket and heat-shrink sleeves ensure an airtight seal, protecting critical splices from moisture and UV exposure. For high-density backhaul links, its ability to support up to 864 ribbon fibers makes it future-proof for ongoing network upgrades. The included hanging hoops and installation accessories allowed our field crews to mount each 515 × 310 mm dome efficiently.

Isabelle Roche
May 20, 2026

We standardized on the FOSCYH7 for pipeline and duct fiber splicing contracts due to its rigid physical construction and high-capacity tray layout. Weighing between 3.2 kg and 4.0 kg, the high-impact PC housing stands up to severe mechanical compression and soil pressure during direct burial. The internal structure includes a dedicated fiber holding tray for loose buffer tube storage, keeping un-spliced fibers organized and stress-free. Whether configured for 24-core drop points or fully populated 288-core trunk splices, the FOSCYH7 is a dependable, cost-effective enclosure for utility-grade fiber cable management.

Showing 3 of 15 top reviews.

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