Plastic Accessories

The small parts that hold the network together — adapter holders, cable rings, splice frames, insulating plugs, and cable tools.

Every FDC, splice closure, ODF, and patch panel relies on a set of internal plastic and metal accessories to function. The enclosure is the shell. The accessories are the internals — the adapter holders that position fiber connectors, the cable management rings that route patch cords without crushing them, the splice tray frames that organize fusion splices, and the insulating plugs that seal cable entry points against water and dust. Order an FDC without specifying the correct adapter holders and you cannot terminate fibers. Install cable management rings in the wrong position and your patch cords exceed the 30mm minimum bend radius. These are not afterthoughts — they are the parts that determine whether your fiber installation works or does not.

Jergeo manufactures a complete range of ODN plastic accessories: adapter holders (JKT series), optical connector holders (JTC series), cable management rings and spools (JXH and JXT series), splice tray frames (JZRK series), direct splice trays (JZR series), insulating plugs (JJY series), heat-shrink splice protectors (JRS series), and fiber optic strippers (JKB series). All products are injection-molded from ABS or PC material and are compatible with Jergeo enclosures as well as standard third-party ODN cabinets.

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JKT-A 6-Position Adapter Holder

JKT-A 6-Position Adapter Holder

6-position adapter holder for SC duplex adapters

6 positions
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JKT-B 6-Position Adapter Holder

JKT-B 6-Position Adapter Holder

6-position adapter holder for LC duplex / FC adapters

6 positions
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JZRK-A 6-Position Splice Tray Frame

JZRK-A 6-Position Splice Tray Frame

6-position metal splice tray frame for ODFs and FDCs

6 splice positions
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JZRK-B 12-Position Splice Tray Frame

JZRK-B 12-Position Splice Tray Frame

12-position metal splice tray frame for large ODFs and FDCs

12 splice positions
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JXH-A Cable Management Ring

JXH-A Cable Management Ring

Open-side cable management ring for horizontal routing

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JJY-A Insulating Plug

JJY-A Insulating Plug

M6 insulating plug for cable entry seal

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JRS-A Heat-Shrink Splice Protector

JRS-A Heat-Shrink Splice Protector

Heat-shrink splice protector for fusion splice protection

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JKB-A Fiber Optic Stripper

JKB-A Fiber Optic Stripper

Precision fiber optic cable stripping tool

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JZR-A Direct Splice Tray

JZR-A Direct Splice Tray

12-core direct splice tray for splicing-only applications

12 cores
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Your Fiber Termination Is Only as Good as the Adapter Holder That Positions It

The Link Between Splice and Patch

An adapter holder (also called an adapter strip or adapter bracket) is the plastic or metal strip that snaps into the front panel of an FDB, OTB, or patch panel and holds the fiber optic adapters (SC, LC, FC) in place. Without the adapter holder, there is no way to mount the adapters — and without adapters, there is no way to connect patch cords to the spliced fibers.

JKT-A vs JKT-B — what is the difference? Both are 6-position adapter holders with identical external dimensions (L 150.1 x W 17.5 x H 17.5mm). The difference is in the adapter type they accept:

Model Adapter Type Common Application
JKT-A SC duplex Standard FDBs and OTBs — SC is the most common connector in FTTH
JKT-B LC duplex or FC Higher-density FDBs (LC) or legacy telecom (FC)

When ordering replacement adapter holders, you must specify the adapter type. An SC adapter holder cannot accept LC adapters — the cutout dimensions are different. If you mix them up, the adapters will not snap in.

48-position adapter holders: Used in high-port-count FDBs (e.g., JFDB-96A with 2 x 48 = 96 ports). These are wider strips designed to span the full width of the FDB front panel. They accept FC, SC, or LC adapters depending on the cutout configuration ordered.

A Cable Management Ring Is Not Decoration

It Prevents Macro-Bend Loss, Cable Tangle, and Maintenance Nightmare

Fiber optic cable has a minimum bend radius of 30mm for G.652D single-mode fiber. When patch cords are routed inside an ODF, FDC, or patch panel without cable management, they hang freely, cross over each other, and bend at random angles. The result: macro-bend loss at every unmanaged bend, tangled cables that make it impossible to trace a specific fiber, and a maintenance nightmare when a technician has to replace one patch cord among 96 unmanaged cables.

Ring vs Spool — two routing philosophies: A cable management ring (JXH series) routes individual patch cords or small bundles along a specific path — from adapter panel to splice tray, or along a horizontal cable channel. A cable management spool (JXT series) is a central routing point — fibers wrap around the spool to change direction or reach adapter panels on both sides of the ODF. Rings are point-to-point. Spools are centralized.

Model Dimensions Style Application
JXH-A H 48 x W 56mm Open-side, green 6-12 patch cords, horizontal routing
JXH-B H 45 x W 68mm Double-C, white Vertical cable routing
JXH-C H 41 x W 28mm With base, gray Compact horizontal routing
JXH-D H 79 x W 80mm With base, gray Large cable bundles, main entry routing
JXH-E H 30 x W 5.8mm Small C-type, white Single bare fiber routing

The sizing rule: Use the smallest ring that accommodates the cable bundle without compression. A ring that is too small causes over-compression and macro-bend loss. A ring that is too large wastes internal space and allows the cables to shift. The correct ring size is the smallest one that fits.

The Plug That Stops Water at the Cable Entry

Insulating Plugs Are the Last Line of Defense Against Environmental Ingress

Every cable entry point on an FDC, FDB, FSC, or OTB is a potential leak path for water, dust, and insects. The insulating plug (also called a cable gland seal or cable entry seal) is the component that seals around the cable at the entry point. Without it — or with the wrong size plug — the enclosure's IP rating is compromised, and water ingress causes connector corrosion and fiber degradation.

How insulating plugs work: The plug has a rubber body with a central hole that matches the cable diameter. The plug threads into the cable entry port on the enclosure (M4, M5, M6, or M8 thread). When the cable is inserted through the plug and the plug is tightened, the rubber compresses around the cable, creating a watertight and dust-tight seal. Multiple cables can pass through a single plug if the plug has multiple holes (multi-hole plugs).

Why plug size matters: The plug must match both the thread size of the cable entry port AND the cable diameter. A plug that is too large for the cable will not compress enough to seal. A plug that is too small will not fit the thread. Always measure the cable diameter at the entry point and select the matching plug.

Model Dimensions Thread Application
JJY-A H 13.5 / D 16mm M6 Standard cable entry seal
JJY-B H 10 / D 15.5mm M8 Large cable entry seal
JJY-C H 10 / D 15mm M5 Small cable entry seal
JJY-D H 10 / D 15mm M6 Cable entry seal (alternate)
JJY-E H 8 / D 12mm M4 Smallest cable entry seal
JJY-F H 15.5 / D 12mm M4 Extended seal for thick walls

All Jergeo insulating plugs are made from EPDM or NBR rubber — oil-resistant, UV-stable, and rated for continuous operation from -40 to +85 C. They are included as standard accessories with every Jergeo enclosure.

Frequently Asked Questions

What is the difference between JKT-A and JKT-B adapter holders?
Both are 6-position adapter holders with identical external dimensions (L 150.1 x W 17.5 x H 17.5mm). The JKT-A is designed for SC duplex adapters — the most common connector type in FTTH networks. The JKT-B is designed for LC duplex or FC adapters — LC for higher-density applications, FC for legacy telecom installations. The cutout dimensions on the holder are different for each adapter type, so you cannot install an LC adapter in a JKT-A holder or an SC adapter in a JKT-B holder.
What size insulating plug do I need for my cable entry?
The insulating plug must match two things: the thread size of the cable entry port on your enclosure (M4, M5, M6, or M8), and the cable diameter. Measure the cable diameter at the point where it enters the enclosure, then select the plug with the matching thread size. For example, a 10mm branch cable entering an M6 port uses JJY-A (D 16, H 13.5). If the enclosure wall is thick (15mm or more), use JJY-F (M4, H 15.5) instead of JJY-E (M4, H 8) to span the full wall thickness.
What is the difference between a cable management ring and a cable management spool?
A cable management ring (JXH series) is a small open-side or double-C ring that routes individual patch cords or small fiber bundles along a specific path inside the enclosure. A cable management spool (JXT series) is a larger cylindrical component that serves as a central routing point — fibers wrap around the spool to change direction, store slack, or reach adapter panels on both sides. Rings are for point-to-point routing. Spools are for centralized multi-fiber routing.
Can I use Jergeo plastic accessories in third-party enclosures?
It depends on the accessory type. Adapter holders (JKT) and insulating plugs (JJY) follow standard dimensions and thread sizes, so they are compatible with most third-party FDBs, OTBs, and cable entries that use the same adapter types and thread sizes. Cable management rings (JXH) and spools (JXT) are universal. Splice tray frames (JZRK) are designed for Jergeo ODFs and FDCs and may not fit the mounting rails in third-party cabinets — check the internal dimensions before ordering.
What does the JRS-A heat-shrink splice protector do?
The JRS-A is a heat-shrinkable tube with an internal stainless steel rod that protects a fusion splice point. After fusion splicing, the splice protector slides over the bare splice point and is heated with a splice heater. The tube shrinks around the splice, and the stainless steel rod provides mechanical strength. The JRS-A is available in three lengths — 60mm (for ribbon splices and larger splicers), 45mm (standard), and 40mm (compact splicers).
What is a splice tray frame (JZRK) and how is it different from a splice tray (JZR)?
A splice tray frame (JZRK) is a metal frame that holds multiple splice trays and mounts inside an ODF or FDC. Think of it as a rack that the splice trays slide into. The JZRK-A holds 6 splice positions and the JZRK-B holds 12 splice positions. A direct splice tray (JZR-A, 160x100x12mm) is a standalone plastic tray that holds splice sleeves and fiber slack — it does not need a frame.
What is the JKB-A fiber optic stripper used for?
The JKB-A is a hand tool for stripping the outer jacket, buffer tubes, and coating layers from fiber optic cables before splicing or termination. It has precision-ground openings calibrated to common fiber diameters (250um coating, 900um buffer, 2.0-3.0mm jacket). It is not a splicing tool — it is a cable preparation tool.
Why does Jergeo offer five different sizes of cable management rings?
Because fiber routing inside enclosures is not one-size-fits-all. A large FDC with 96 patch cords needs a different routing solution than a small OTB with 4 patch cords. The JXH-E (H 30 x W 5.8mm) routes a single bare fiber between adjacent ports. The JXH-A (H 48 x W 56mm) routes 6-12 patch cords along a horizontal channel. The JXH-D (H 79 x W 80mm) routes the main fiber bundle from the cable entry to the splice trays. The correct ring size is the smallest one that accommodates the cable bundle without compression.