Fiber Optic Splice Closure Heat Shrink Type Dome Closure


The OYI-FOSC-H8 dome fiber optic splice closure is used in aerial, wall-mounting, and underground applications for the straight-through and branching splice of the fiber cable. Dome splicing closures are excellent protection of fiber optic joints from outdoor environments such as UV, water, and weather, with leak-proof sealing and IP68 protection.

Product Detail


Product Tags

The closure has 5 entrance ports on the end (6 round ports and 1 oval port). The shell of the product is made from PP+ABS material. The shell and the base are sealed by pressing the silicone rubber with the allocated clamp. The entry ports are sealed by heat-shrinkable tubes. The closures can be opened again after being sealed and reused without changing the sealing material.

The closure's main construction includes the box, splicing, and it can be configured with adapters and optical splitters.

Product Features

High-quality PP+ABS materials are optional, which can ensure harsh conditions such as vibration and impact.

Structural parts are made of high-quality stainless steel, providing high strength and corrosion resistance, making them suitable for various environments.

The structure is strong and reasonable, with a heat shrinkable sealing structure that can be opened and reused after sealing.

It is well water and dust-proof, with a unique grounding device to ensure sealing performance and convenient installation.The protection grade reaches IP68.

The splice closure has a wide application range, with good sealing performance and easy installation.  It is produced with high-strength engineering plastic housing that is anti-aging, corrosion-resistant, high-temperature resistant, and has high mechanical strength.

The box has multiple reuse and expansion functions, allowing it to accommodate various core cables.

The splice trays inside the closure are turn-able like booklets and have adequate curvature radius and space for winding optical fiber, ensuring a curvature radius of 40mm for optical winding.

Each optical cable and fiber can be operated individually.

Sealed silicone rubber and sealing clay are used for reliable sealing and convenient operation during the opening of the pressure seal.

The closure is of small volume, big capacity, and convenient maintenance. The elastic rubber seal rings inside the closure have good sealing and sweat-proof performance. The casing can be opened repeatedly without any air leakage. No special tools are required. The operation is easy and simple. An air valve is provided for the closure and is used to check the sealing performance.

Designed for FTTH with adapter if needed.

Technical Specifications

Item No. OYI-FOSC-H8
Size (mm) Φ220*470
Weight (kg) 2.5
Cable Diameter (mm) Φ7~Φ21
Cable Ports 1 in (40*70mm), 4 out (21mm)
Max Capacity Of Fiber 144
Max Capacity Of Splice 24
Max Capacity Of Splice Tray 6
Cable Entry Sealing Heat-Shrinkable Sealing
Life Span More Than 25 Years


Telecommunications, railway, fiber repair, CATV, CCTV, LAN, FTTX.

Using communication cable lines overhead, underground, direct-buried, and so on.

Aerial Mounting

Aerial Mounting

Pole Mounting

Pole Mounting

Product Picture


Packaging Information

Quantity: 6pcs/Outer box.

Carton Size: 60*47*50cm.

N.Weight: 17kg/Outer Carton.

G.Weight: 18kg/Outer Carton.

OEM service available for mass quantity, can print logo on cartons.

Inner Box

Inner Packaging

Outer Carton

Outer Carton

Packaging Information
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