The XCG Series represents the culmination of decades of specialized experience in circular connector development, combined with extensive field feedback from defense and industrial users worldwide. By integrating the latest advancements in materials science, sealing technology, and manufacturing processes, we have created a next-generation connector that sets new standards for reliability in harsh environments. The XCG's innovative dual-sealing system—featuring both a head-to-base environmental seal and an internal hermetic barrier—provides unprecedented protection against moisture, pressure differentials, and contaminants. Fully interchangeable with legacy XCG models, this series offers an immediate upgrade path for existing systems while delivering enhanced performance for tomorrow's most demanding applications.
The XCG Series Next-Generation Circular Electrical Connector embodies the evolution of decades of engineering excellence and user-centered design. Building upon the proven foundation of the original XCG platform, this new generation incorporates cutting-edge sealing technologies, advanced materials, and refined manufacturing techniques to deliver unmatched reliability in the most challenging environments. The connector's standout feature is its sophisticated dual-sealing system: a precision head-to-base seal isolates the critical contact interface from external moisture and contaminants, while an internal sealing layer provides true hermetic protection capable of withstanding 0.3 atmospheres of pressure differential. This combination ensures signal integrity and power transmission continuity whether deployed in deep-sea submersibles, high-altitude aircraft, or desert ground vehicles. The XCG Series maintains complete interchangeability with all legacy XCG installations, enabling seamless system upgrades without costly panel modifications. From military communications to industrial automation, the XCG delivers the peace of mind that comes from true next-generation engineering.
| Parameter | Value |
|---|---|
|
Shell Material |
High-strength Aluminum Alloy |
|
Insulator |
Thermosetting Material |
| Contact Material | Copper Alloy |
| Contact Plating | Silver / Gold |
| Shell-to-Shell Continuity | Aluminum Shell ≤2.5mΩ |
| Vibration | Frequency 10-2000Hz, Acceleration 196m/s² |
| Shock | Acceleration 980m/s² |
| Constant Acceleration | 980m/s² |
| Mechanical Endurance | 1,000 Cycles |
The XCG Series platform offers extensive customization while maintaining core sealing performance:

At MXTD, we don't just manufacture connectors—we engineer solutions based on real-world experience and continuous innovation. The XCG Series embodies our philosophy of "evolution through excellence," taking the proven reliability of decades-old designs and enhancing them with the latest technological advances. Every XCG connector is manufactured under strict enterprise standard 21E0.204.080JT, ensuring consistent quality that meets or exceeds GJB2889 requirements. Our team brings decades of cumulative experience in circular connector design and application engineering, providing our customers with insights that only come from years of field exposure. When you choose MXTD, you're selecting a partner committed to understanding your unique challenges and delivering solutions that perform—first time, every time, in any environment.


Q: What makes the XCG Series "next generation" compared to standard XCG connectors?
A: The XCG Series incorporates advanced sealing technologies, refined materials, and manufacturing improvements developed over decades of production experience and extensive user feedback. The result is enhanced environmental protection, improved reliability, and maintained interchangeability with legacy systems.
Q: What is the significance of the dual-sealing system?
A: The dual-sealing system provides two levels of protection: an external head-to-base seal that prevents moisture and contaminants from reaching the contacts, and an internal hermetic seal that maintains integrity under pressure differentials up to 0.3 atm—critical for altitude changes, underwater operation, or pressurized equipment.
Q: Can I replace my existing XCG connectors with XCG Series without panel modifications?
A: Yes. The XCG Series maintains 100% interchangeability with all legacy XCG connectors, ensuring direct drop-in replacement without any panel or mounting changes.
Q: What pressure rating does the hermetic seal provide?
A: The internal sealing layer withstands 35.5kPa pressure differential at normal temperatures (0-35℃), equivalent to approximately 0.35 atmospheres. For applications requiring sealing under extreme temperature variations, we recommend our XC-F-M glass sintered products.
Q: What plating options are best for marine environments?
A: For marine applications, we recommend electroless nickel plating (96-hour salt spray resistance) for standard requirements, or stainless steel passivated versions (1,000-hour salt spray resistance) for extended exposure.
Q: Is the XCG Series suitable for high-vibration environments?
A: Absolutely. The XCG Series is tested to withstand vibration from 10-2000Hz at 196m/s² acceleration, as well as shock and constant acceleration up to 980m/s², making it ideal for aircraft, vehicles, and heavy machinery.
Q: What contact sizes and ratings are available?
A: The standard offering includes Φ1.0mm contacts rated at 5A with 5mΩ contact resistance. Additional contact sizes and configurations are available for custom requirements—please contact our engineering team for specific needs.

Ready to elevate your system reliability with our XCG Series next-generation circular connectors? Our technical experts are standing by to discuss your specific application requirements and recommend the optimal configuration. Whether you need standard units for immediate deployment or custom-designed sealing solutions for specialized programs, we're here to help you achieve your performance objectives.
Reach out to our team today: manager04@mxtdinfo.com
Let us show you how decades of engineering experience and advanced sealing technology can protect your critical connections in even the most demanding environments.
Our customers’ satisfaction speaks for our quality — contact us to experience the same reliable service.