When you need a reliable connection solution for critical applications, the XC158 Series High-Reliability Sealed Spring Connectors stands out as the industry's most robust choice. Our advanced connector series combines military-grade sealing with exceptional shock resistance, making it perfect for marine, aerospace, and harsh-environment industrial applications. With our deep expertise in high-performance interconnection systems, MXTD delivers proven solutions that meet the most demanding requirements for waterproof, corrosion-resistant, and vibration-stable equipment installations.
MXTD, authorized distributor of JONHON’s high-performance connectors, proudly presents the XC158 Series High-Reliability Sealed Spring Connectors—engineered to redefine durability and stability in extreme operating conditions. Designed in strict adherence to GJB2889 military standards, this series is built for critical applications where uncompromising electrical connectivity is non-negotiable.
The XC158 Series stands out with its double-curved wire spring contact structure and bayonet quick-connect system, ensuring instant, secure mating and resistance to intense shock and vibration. Its industry-leading IP68 waterproof rating (1m immersion) and anti-slip design make it the top choice for underwater, damp, or outdoor harsh environments. Available in high-strength aluminum alloy (with hard anodizing/electroplating) and stainless steel (passivation) housings, the series delivers exceptional corrosion resistance—up to 1000 hours for stainless steel variants.
With 10 contact sizes ranging from Φ0.635mm to Φ12mm (rated current 1A–250A) and flexible installation options (panel, bulkhead, soldering), the XC158 Series is fully customizable to match the unique demands of military, aerospace, marine, and industrial automation projects. Backed by MXTD’s global logistics network and technical support, we ensure on-time delivery and professional integration guidance for every order.
The XC158 Series High-Reliability Sealed Spring Connectors are precision-engineered military-grade components designed to deliver uninterrupted electrical performance in the most challenging environments. Built to meet the stringent requirements of GJB2889, this series integrates a double-curved wire spring contact system and a bayonet quick-locking mechanism—a combination that ensures low contact resistance, high mating stability, and resistance to extreme shock (980m/s²) and vibration (28.4G RMS).
Engineered for maximum environmental resilience, the XC158 Series features a fully sealed structure that achieves IP68 waterproof protection (1m water immersion for 1 hour after mating) and dust-tight performance. Its anti-slip design prevents accidental disconnection under dynamic loads, while five-position orientation pins eliminate misplugging risks in complex systems.
The series offers two premium housing materials: high-strength aluminum alloy (with hard anodizing, electroplating, or nickel plating) and stainless steel (passivation treatment for conductivity). This material diversity ensures superior corrosion resistance—aluminum alloy variants withstand 200–500 hours of salt spray, while stainless steel models endure up to 1000 hours. With 10 contact sizes (Φ0.635–Φ12mm) covering rated currents from 1A to 250A, the XC158 Series supports both low-power signal transmission and high-power power supply in a single connector.
Flexible installation is a core advantage: the connectors support panel mounting, bulkhead mounting, and direct soldering, with "waist-shaped" mounting holes that accommodate alignment variations for enhanced compatibility. Whether deployed in deep-sea detection equipment, military communication systems, industrial automation robots, or aerospace avionics, the XC158 Series guarantees long-term reliability with a mechanical life of 1000 mating cycles.
| Mechanical Performance | Specifications |
| Housing (Aluminum Alloy) | Shielded plating: nickel plating; Unshielded plating: hard anodization |
| Housing (Stainless Steel) | Passivation treatment, conductive |
| Insulator | Special engineering plastic |
| Sealing Line & Sealing Ring | High tear-resistant, high-temperature-resistant silicone rubber |
| Contacts | Copper alloy gold-plated; Iron-nickel alloy gold-plated |
| Sine Vibration | Frequency: 10–2000 Hz; Acceleration: 196 m/s² |
| Random Vibration | Power spectral density: 0.6G²/Hz; Root mean square acceleration: 28.4G |
| Shock | Acceleration: 980 m/s² |
| Constant Acceleration | 980 m/s² |
| Mechanical Life | 10000 mating cycles |
Your projects benefit from these connectors in numerous demanding environments:
Military & Aerospace: Avionics, missile systems, military communication, field command equipment
Marine Engineering: Underwater detectors, shipborne electrical systems, offshore oil platform equipment
Industrial Automation: Harsh-environment robots, process control systems, outdoor sensors
Test & Measurement: High-vibration test equipment, extreme-environment data acquisition systems
Energy & Power: Offshore wind turbines, subsea power cables, mining electrical equipment
Emergency Rescue: Underwater rescue gear, flood-control monitoring systems
The XC158 Series High-Reliability Sealed Spring Connectors delivers outstanding electrical performance across multiple parameters:
Bayonet Quick-Locking: Instant mating/unmating with a secure lock to prevent accidental disconnection.
Double-Curved Wire Spring Contacts: Ensures low contact resistance and stable connectivity under vibration/shock.
IP68 Sealing: Full protection against dust and 1m water immersion for long-term underwater operation.
Anti-Misplug Orientation: 5-position positioning pins eliminate incorrect mating and component damage.
Corrosion Resistance: Special surface treatment (anodizing/passivation) for long-term use in salt spray environments.
Flexible Installation: Supports panel, bulkhead, and soldering mounting; waist-shaped holes for alignment tolerance.
Current Diversity: 10 contact sizes cover 1A–250A, adapting to signal and power transmission needs.
Your equipment benefits from these advanced design elements:
Military-Grade Reliability: Complies with GJB2889, engineered for extreme battlefield and industrial environments.
Superior Environmental Resistance: IP68 waterproof, -55°C to +200°C temperature range, and up to 1000h salt spray resistance.
Shock & Vibration Proof: Withstands 980m/s² shock and 28.4G RMS random vibration for dynamic stability.
Low Contact Resistance: Gold-plated copper alloy contacts ensure minimal signal loss and long service life.
Error-Proof Design: 5-position orientation and anti-slip structure prevent misplugging and disconnection.
Broad Current Range: Φ0.635–Φ12mm contacts support 1A–250A, meeting diverse power/signal needs.
Versatile Mounting: Panel, bulkhead, and soldering options with waist-shaped holes for easy installation.
We understand that your applications may require specific modifications. Our experienced engineering team provides comprehensive OEM/ODM customization services to meet your unique requirements.
Our customization capabilities include:

Xi'an Mingxi Taida Information Technology Co., Ltd. brings over 12 years of specialized experience to every project. Our comprehensive approach ensures you receive complete solutions backed by expert support.
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Q: What standards do the XC158 Series connectors comply with?
A: They strictly comply with the national military standard GJB2889 and JONHON’s enterprise standard Q/21EJ1070.
Q: What is the waterproof rating of the XC158 Series?
A: The connectors achieve IP68 waterproof performance, withstanding 1m deep water immersion for 1 hour after proper mating.
Q: Can aluminum alloy connectors be used outdoors?
A: Aluminum alloy connectors are recommended for indoor use. For outdoor/salt spray environments, we suggest stainless steel variants or aluminum alloy models with enhanced electroplating.
Q: What is the maximum rated current of the XC158 Series?
A: The largest contact size (Φ12mm) supports a rated current of 250A, suitable for high-power applications.
Q: How to prevent misplugging of the connectors?
A: The series is equipped with 5-position orientation pins, and we only recommend matching with JONHON’s original XC158 Series accessories.
Q: What is the mechanical life of these connectors?
A: They support up to 1000 mating cycles, ensuring long-term reliable use in frequent connection scenarios.
Q: Can I customize the contact configuration of the connector?
A: Yes, MXTD offers custom contact size combinations, layouts, and current ratings to meet your specific system needs.
Ready to discuss your connector requirements? Our technical team is here to help you find the perfect solution for your application.
When you choose our XC158 Series High-Reliability Sealed Spring Connectors, you're investing in proven technology backed by comprehensive support. Contact us today to learn how we can enhance your next project.
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