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Dome Type Fiber Optic Splice Closure – IP68 Outdoor Enclosure with Mechanical Sealing, Up to 96 Splices
Durable polypropylene dome shell provides unmatched environmental resistance and longevity.
Modular splice tray design supports up to four trays, accommodating up to 96 fiber splices.
Mechanical (gel-free) sealing enables easy re-entry and repeated use without compromising protection.
Multiple cable ports—including six Ø18 mm and two Ø12 mm spares—offer flexible fiber entry and routing.
Compact and robust structure designed for long-lasting reliability even in challenging outdoor condition
What is a Dome Type Fiber Optic Splice Closure?
A Dome Type Fiber Optic Splice Closure is an outdoor protective enclosure used to splice, store and protect optical fibers in FTTH, FTTx trunk and backbone networks. Its dome structure, IP68 sealing and modular splice trays make it suitable for harsh outdoor fiber cable environments.
Dome Type Fiber Optic Splice Closure Specification parameters
- Specification parameters
- OPTICAL CHARACTERISTICS
Product Structure & Composition
Dome Shell: The UV-resistant polypropylene shell protects internal fiber splices from sunlight, water, dust, impact and outdoor aging.
Mechanical Sealing System: The gel-free sealing design allows the closure to be opened and reused during maintenance without reducing protection performance.
Splice Trays: The modular tray design supports up to four trays and can accommodate 12F, 24F, 48F or 96F splice capacity depending on configuration.
Cable Entry Ports: Multiple ports, including six Ø18 mm ports and two Ø12 mm spare ports, provide flexible cable routing for different network layouts.
Benefits of Dome Type Fiber Optic Splice Closure
IP68 Outdoor Protection
The IP68-rated enclosure provides reliable protection against dust and water, making it suitable for demanding outdoor fiber optic cable networks.
High Splice Capacity up to 96 Fibers
The modular splice tray structure supports flexible capacity options from 12F to 96F, meeting different FTTH, FTTx and backbone network requirements.
Easy Re-Entry Mechanical Sealing
The mechanical gel-free sealing design allows technicians to reopen, inspect and maintain the closure more conveniently during network expansion or repair.
Reliable Performance in Harsh Environments
The closure is designed to resist impact, vibration, chemical stress and temperatures from –35 °C to +70 °C, supporting stable long-term outdoor operation.
Engineering Applications Dome Type Fiber Optic Splice Closure
FTTH and FTTx Networks
Used in FTTH and FTTx access networks to protect fiber splices between feeder cables, distribution cables and branch cables.
Aerial and Pole-Mounted Fiber Routes
The closure can be installed on aerial cable routes or poles to protect outdoor splice points in telecom access networks.
Buried and Manhole Installation
With IP68 protection and rugged sealing, the closure is suitable for buried cable routes, manholes and other demanding underground environments.
Backbone and Emergency Repair Networks
It can be used in backbone fiber routes, high-density nodes and emergency outdoor repair projects where reliable splice protection is required.
Shipping & Packaging
Product Comparison：
Dome Type Splice Closure vs Inline Fiber Splice Closure
| Feature / Dimension | Dome Type Fiber Optic Splice Closure | Inline Fiber Splice Closure |
|---|---|---|
| Structure | Vertical dome design with modular splice trays. | Horizontal inline design for straight-through cable routes. |
| Capacity | Can support up to 96 fiber splices depending on tray configuration. | Capacity varies by model, often used for linear cable splicing. |
| Installation | Suitable for aerial, buried, wall, pole and manhole installation. | Commonly used for duct, aerial and direct cable route connections. |
| Maintenance | Mechanical sealing supports convenient re-entry. | Maintenance depends on sealing structure and installation method. |
| Best Use | Good for outdoor branch points, FTTH nodes and high-density splice protection. | Good for straight cable jointing and line extension. |
Dome Type Fiber Optic Splice Closure Selection Guide
Choose Dome Type Closure for Outdoor Branch Nodes
Choose this dome type splice closure when the network requires reliable outdoor splice protection, flexible cable entry and high splice capacity in FTTH, FTTx or backbone routes.
Choose Based on Splice Capacity
Select 12F, 24F, 48F or 96F configuration according to the number of fiber splices, tray quantity and future expansion requirements.
Confirm Installation Environment
Before selection, confirm whether the closure will be installed aerially, underground, on a wall, on a pole or inside a manhole. Cable diameter, port quantity and sealing requirements should also be checked.
Installation Instructions
Prepare the Closure and Cable
Check the closure body, splice trays, sealing parts and cable ports. Prepare the fiber cable according to the installation plan.
Introduce and Fix the Cables
Insert the cables through the correct cable ports and secure them firmly. Make sure the cable sealing parts are installed properly.
Splice and Store the Fibers
Perform fiber fusion splicing, place splice sleeves into the trays and route the spare fibers neatly while maintaining the required bending radius.
Close and Test the Closure
Close the dome cover securely, check the sealing structure and test the optical link before putting the closure into service.
Download YRTFIBER Product Catalog
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Frequently Asked Questions & Quick Inquiry
Dome Type Fiber Optic Splice Closure FAQ
Q1: What is the splice capacity of this dome closure?
A: The closure supports up to 96 fiber splices using 4 trays (24 splices each).
Q2: Is the dome closure suitable for outdoor use?
A: Yes—its polypropylene shell and sealing meet IP68 standards, and it withstands temperatures from −35 °C to +70 °C.
Q3: What sealing method is used? Gel or mechanical?
A: It utilizes mechanical sealing, simplifying maintenance and providing sturdy environmental protection without messy gels.
Q4: What mounting options are available?
A: Compatible with wall, pole, strand, aerial, buried, and manhole installations—highly flexible for various deployment needs.
Q5: Does it protect against mechanical stress like vibration or stretching?
A: Absolutely—its design resists impact, vibration, chemical exposure, and physical stress ensuring reliable protection in challenging environments.
What is the maximum splice capacity?
The closure can support up to 96 fiber splices depending on the number and type of splice trays used.
Is this dome splice closure waterproof?
Yes. It is designed for IP68 protection, providing strong resistance against dust and water in outdoor environments.
Can it be reopened for maintenance?
Yes. The mechanical gel-free sealing design supports easy re-entry and repeated maintenance.
Where can this closure be installed?
It can be used for aerial, buried, wall-mounted, pole-mounted and manhole installation.
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