Wholesale Fiber Optic Dome Closure from Yuanyi in China

Yuanyi factory's Fiber Optic Dome Closure (also known as a butt closure) is a single-ended protective enclosure used in outdoor fiber networks to house and protect splices. Unlike inline closures where cables enter from both ends, all cables go in and out through the same base plate. This design provides better fiber management, more reliable sealing, and greater flexibility for aerial, underground, or pedestal installations.

Key Features

1. Sealing System

Most dome closures use either gel or heat-shrink technology to achieve IP68 water and dust protection. Gel-based seals, such as those used in many Yuanyi models, are re-enterable and allow technicians to add or remove cables without special tools.

2. Internal Fiber Management

Inside the closure, fibers are routed into stackable splice trays that provide bend radius protection (typically 40mm). Yuanyi dome closures support splice capacities ranging from 24 to 288 splices, with modular trays that make installation and maintenance straightforward.

3. Material and Durability

The housing of Fiber Optic Dome Closure is made from impact-resistant polymer or polypropylene, offering UV protection and IK10 impact resistance for harsh outdoor environments.

Typical Applications

FTTH (Fiber to the Home): Connecting feeder cables to distribution cables.

Long-Haul Networks: Splicing two large cables on a backbone route.

Mid-Span Access: Extracting a few fibers to a branch line without cutting the main cable.

Selection Guide

Factor	Consideration
Splice capacity	24–288 splices typical (e.g., Yuanyi YY-D series)
Cable diameter	Ports should fit 2mm micro-cables up to 30mm main cables
Environment	IP68 required for flooded manholes; UV protection for aerial use
Re-entry needs	Gel sealing is best for frequent access

Yuanyi offers cost-effective dome closures that meet IP68 standards and are widely used in FTTH and outside plant (OSP) projects.

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Fiber Optic Dome Mechanical Seal Closure

Yuanyi factory's Fiber Optic Dome Mechanical Seal Closure (FOSC) – also widely searched as FTTH DOME CLOSURE – is designed for outdoor fiber splicing in FTTx, CATV, and access networks. It supports 24 to 144 cores using up to 6 splice trays (24 cores/tray). Suitable for aerial, pole-mount, wall-mount, underground, and direct burial installations.

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288Core Fiber Optic Dome Splice Closure

As a professional manufacturer in China, Yuanyi factory would like to provide you quality 288Core Fiber Optic Dome Splice Closure, which is a high-density solution designed for backbone networks, FTTH distribution, and CATV systems. It supports fiber counts from 144 to 288 cores with up to 12 splice trays (24 cores/tray).

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96Core Fiber Optic Dome Splice Closure

The 96Core Fiber Optic Dome Splice Closure made by leading China manufacturer Yuanyi, is designed for large-scale fiber management in FTTx, backbone, and access networks. This dome-type closure supports fiber counts ranging from 24 to 144 cores, making it an ideal solution for high-density splicing scenarios. It can be deployed in aerial, pole-mount, wall-mount, underground, and duct environments, offering unmatched flexibility for field engineers.

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24Core Fiber Optic Dome Splice Closure

Yuanyi is a professional Fiber Optic Dome Closure manufacturer and supplier in China. Our 24Core Fiber Optic Dome Splice Closure is a rugged, high-performance solution for protecting and managing optical fiber splices in outdoor environments. Designed for 12 to 24 cores, this dome-style closure supports aerial, pole-mount, wall-mount, underground, and duct installations, offering exceptional flexibility for FTTH, backbone, and access network deployments.

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12Core Fiber Optic Dome Splice Closure

As a professional Fiber Optic Dome Closure manufacturer in China, Yuanyi ensures high-quality construction and reliable performance in diverse environmental conditions. Our 12Core Fiber Optic Dome Splice Closure is designed for outdoor optical cable splicing, distribution, and storage. It supports both direct and branch connection methods, making it ideal for aerial, pole-mount, and underground installations.

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Yuanyi as a professional manufacturer and supplier of high-quality Fiber Optic Dome Closure in China. With our own factory, we provide customized services and look forward to partnering with you.

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