Fiber Optic Cable Splice Closure (Joint Box / Joint Closure)

Key Features

  • Supports single-fiber and ribbon fiber splicing

  • Fully equipped kit for quick and convenient installation

  • Overlapping splice tray design for easy fiber management

  • Maintains fiber bending radius greater than 40 mm

  • Mechanical sealing ensures reliable waterproof protection

  • Designed for multiple re-entries without performance loss

  • Resistant to moisture, vibration, and extreme temperatures

  • Suitable for harsh outdoor environments

  • Operating Temperature –40°C to +65°C

The Telexc Fiber Optic Splice Closure is a robust fiber management solution designed to protect optical fiber splicing joints in outdoor network deployments. It provides a sealed, organized, and secure environment for fiber splices, ensuring long-term network reliability in harsh conditions.

This closure supports straight-through and branching configurations and is suitable for aerial, duct, and direct-buried installations. Manufactured from high-strength engineering plastics, the TX Series ensures superior resistance to water ingress, dust, vibration, and temperature fluctuations. The modular internal design allows easy installation, re-entry, and future expansion, making it ideal for FTTH, telecom, and CATV networks.

Model Numbers

  • TX-72S – Single Fiber, up to 72 cores

  • TX-144R – Ribbon Fiber, up to 144 cores

International Standard Compliance

  • IEC 60529 (IP68) – Waterproof & dustproof

  • IEC 60068 – Environmental durability

  • GR-771-CORE – Outdoor splice closure standard

  • ISO 9001 / RoHS – Quality & material compliance

Construction & Materials

The TX Series splice closure body is manufactured from high-impact Super ABS / PPR material, providing excellent mechanical strength and UV resistance. All fastening components are made from stainless steel, ensuring corrosion resistance and long service life. Internal trays are engineered to hold fibers while maintaining optimal bend radius securely.

Components

  • Insulated waterproof rubber tape (2 rolls)

  • 12-core splice cassette (1 set)

  • Cable fixing device with stainless steel bolts

  • Internal hexagonal wrench (2 sets)

  • Heat-shrinkable tubes (1 package)

  • Stainless steel ties (1 set)

Installation Guide

  1. Prepare the optical cables and clean the outer sheath.

  2. Insert cables through the designated inlet/outlet ports.

  3. Secure cables using the internal fixing devices.

  4. Perform fiber splicing and arrange fibers in splice trays.

  5. Apply sealing tape or heat-shrink tubes as required.

  6. Close the enclosure and tighten bolts evenly.

  7. Mount the closure as per installation requirements (aerial, duct, or buried).

Technical Parameters

Parameter Specification
Product Type Fiber Optic Splice Closure
Port Configuration 4 Ports (2 In / 2 Out)
Cable Diameter Small Port: Ø8–17.5 mm / Large Port: Ø10–17.5 mm
Fiber Type Single Fiber & Ribbon Fiber
Splice Capacity Single Fiber: 1–12 cores per tray (extendable to 16)
Maximum Capacity Single Fiber: 72 cores / Ribbon Fiber: 144 cores
Splicing Tray Type Overlapping Structure
Minimum Bending Radius ≥ 40 mm
Sealing Method Mechanical Sealing / Heat-Shrink Sealing
Sealing Material Self-adhesive Waterproof Sealing Tape
Installation Methods Aerial, Direct-Buried, Duct, Wall, Pole, Handhole
Operating Temperature –40°C to +65°C
Working Environment –5°C to +40°C, RH ≤85%
Atmospheric Pressure 70 kPa – 106 kPa
Closure Material Super ABS / PPR
Fasteners Stainless Steel
Dimensions 460 × 180 × 110 mm
Weight Approx. 2.1 kg

Applications

Aerial Fiber Networks

Used in pole-mounted or strand-mounted installations for FTTH and backbone fiber distribution.

Direct-Buried Installations

Provides long-term protection for underground fiber splices in harsh soil and moisture conditions.

Duct & Underground Networks

Ideal for telecom and carrier networks requiring secure fiber joint protection inside ducts.

CATV & Access Networks

Ensures stable fiber connections in CATV systems and customer premises environments.

Product Advantages

High Environmental Protection

Designed to withstand moisture, dust, vibration, and temperature extremes.

Flexible Network Expansion

Supports multiple fiber types and capacities, allowing future scalability.

Easy Maintenance

Re-enterable design simplifies inspection, repair, and upgrades.

Long Service Life

Durable materials and secure sealing ensure dependable long-term operation.

FAQs

Q1: Can this splice closure be reopened after installation?
Yes, it supports multiple re-entries without compromising sealing performance.

Q2: Is it suitable for ribbon fiber cables?
Yes, selected TX models support ribbon fiber up to 144 cores.

Q3: What sealing methods are available?
Mechanical sealing and heat-shrink sealing options are supported.

Q4: Can it be used for direct-buried installations?
Yes, it is designed for aerial, duct, and direct-buried applications.

Q5: What material is used for the enclosure?
The enclosure is made from Super ABS / PPR with stainless steel hardware.

Q6: Does it include all installation accessories?
Yes, the closure is supplied as a complete installation kit.

Why Choose Telexc

  • Industry-focused fiber optic solutions

  • Strict quality control and material selection

  • Products designed for real-world outdoor conditions

  • OEM & bulk supply capability

  • Technical support and customization options