Trusted by Global Leaders in Subsea Technology & Marine Engineering
ENGINEERING CAPABILITY
Built for Demanding Subsea Applications
11+
Years of Subsea Expertise
60 MPa
In-house Pressure Testing
1-61 Pins
Connector Configurations
180 A
High-current Capability
10 Gbps
High-speed Data Solutions
7–15days
Standard Lead Time
Comprehensive Subsea Connectivity Solutions
Engineered for reliability in the most extreme environments. Explore our range of high-performance underwater connectors designed for ROVs, sensors, and offshore energy systems.
Miniature Circular Series
- Compact design for space-constrained subsea uses. Perfect for micro-sensors and portable ROVs.
- Wet-mateable with zero-leakage deep-sea seals. Built tough to withstand extreme high pressure.
- Fully interchangeable with SubConn and SeaCon. Highly compatible with Impulse standard plugs
Ultra Compact Series
- Smallest and lightest style for tight spaces. Dry-mate connection only for miniature devices
- Premium dry-plug design built to last underwater. Reliable watertight performance under deep sea.
- Perfect substitute for SubConn Nano series. Ideal interface choice for your micro sensors.
Gigabit Ethernet Series
- High-speed data transmission up to 10Gbps. Custom pin configurations to fit your systems.
- Premium gigabit and 10-gigabit speed options. Stable real-time video and massive data sync.
- Highly shielded structure blocks interference. Perfect choice for advanced HD camera setups.
Coaxial Series
- High-frequency transmission with low signal loss. Supports 50-3, 50-5, and 75-3 cable options.
- Rugged 50Ω and 75Ω impedance matching design. Available in 6 power + 1 coaxial hybrid layouts.
- Engineered to endure deep-sea high-pressure up to 50MPa. Ideal interface choice for radar and sonar systems.
High-Current High-Power Series
- Continuous high-load power delivery for deep sea. Single-core models support a maximum current up to 180A.
- Customizable current and voltage configuration options. Advanced Neoprene body molded via high vulcanization.
- Perfect energy transmission for heavy subsea thrusters. Ideal connection choice for large-scale work-class ROVs
Metal Optoelectronic Series
- High-bandwidth transmission with zero interference. Supports single-mode (SM) and multi-mode (MM) fibers.
- Available configurations scale from 1-core to 8-core optical. Hybrid layouts offer synchronous 4-fiber + 4-power pins.
- Premium machined metal housing stands up to 60MPa pressure. Ideal network solution for modern deep-sea ROV and IoT nodes.
High-Pressure Sealed Housings and Junction Boxes Series
- Rugged subsea fortress protecting delicate electronics. Supports custom housing materials like titanium and 316L.
- Bespoke enclosure sizing designed for your precise layout. Flexible integration with standard or custom connectors.
- High-precision molding ensures a dry internal environment. Reliable engineering optimized for deep-sea operations.
Underwater Network Cameras and Searchlights Series
- High-brightness LED searchlights serve as the eyes for deep-sea visual operations. Robust network cameras integrate HD imaging and digital signal processing.
- Rugged shells are crafted from corrosion-resistant aluminum or 316L stainless steel. Engineered with pressure-resistant optical glass and robust sealed cavities.
- Flexible integration with standard subsea watertight connectors. Delivers clear, real-time visual data for critical marine inspections and ROV missions.
WHY CHOOSE HYSF
Your Reliable Partner in Extreme Subsea Environments
With 11+ years of dedicated manufacturing expertise, HYSF delivers high-performance underwater interconnect solutions that bridge the gap between complex engineering and deep-sea reliability. We don’t just sell connectors; we provide the lifeline for your subsea missions.
- 6,000m Depth Rated Integrity Every HYSF connector undergoes rigorous pressure testing in our advanced facilities. Designed to withstand up to 600bar, ensuring zero-leak performance for ROVs, AUVs, and deep-sea sensors.
- 100% Industry Compatibility Our products are engineered to be fully interchangeable with mainstream global brands (like SubConn). This allows for seamless integration into your existing systems without the need for costly redesigns.
- Rapid Customization & OEM/ODM From unique pin configurations to specialized cable vulcanization, our engineering team provides fast-track prototyping and custom solutions tailored to your specific project timelines.
- Corrosion-Resistant Durability Utilizing premium materials—from high-grade Neoprene to Stainless Steel and Titanium—HYSF connectors are built to thrive in high-salinity and harsh offshore conditions.
Engineering Support & Technical Integrity
We empower marine engineers with full technical transparency. Access our comprehensive resource library to ensure seamless integration into your mission-critical subsea systems.
3D Models & STEP Files
Accelerate your design cycle with precision. We provide 2D drawings and 3D STEP files for our entire product range, allowing for immediate integration into your CAD assemblies.
Technical Datasheets
Access in-depth electrical and mechanical specifications, including detailed pin-out diagrams, current ratings, and pressure-tolerance curves for accurate component selection.
Certified Quality
HYSF operates under strict ISO 9001 management. All connectors are CE and RoHS compliant. Material Traceability Reports (MTR) are available upon request for your quality audits.
6,000m Depth Rated
Validated in our in-house hyperbaric chambers up to 600bar. Every batch undergoes 100% insulation and continuity testing to guarantee zero-leak performance at extreme depths.
Engineered for Diverse Subsea Missions
HYSF connectors are the trusted choice across multiple industries, providing reliable connectivity from shallow waters to the deepest ocean trenches.
ROV / AUV & Marine Robotics
Delivering high-speed data and stable power links for navigation, propulsion, and HD imaging systems in modern marine robotics.
Offshore Oil & Gas
Rugged, high-pressure connectors designed for subsea wellheads, pipeline monitoring, and platform power distribution in harsh environments.
Marine Research & Sensing
Precision interconnect solutions for oceanographic sensors, sonar arrays, and environmental monitoring instruments at extreme depths.
Defense & Subsea Security
High-security, tactical-grade connectors for submarine systems, naval sensors, and autonomous underwater defense vehicles.
what makes us different
The values we live by
Excellent Compatibility
HYSF subsea connectors are fully compatible with major international brands including Subconn, Seacon, and Impulse. They match existing mounting hole dimensions and mating interfaces, enabling easy replacement and seamless integration into your current systems
Superior Quality Assurance
Every HYSF watertight connector undergoes rigorous 4-step factory testing: 60MPa hydrostatic pressure test, dielectric withstand voltage test, 1000V insulation resistance test, and contact resistance test. This ensures outstanding reliability in harsh underwater environments.
Competitive Pricing
We offer premium-quality underwater connectors at significantly lower prices — typically only 1/2 to 1/3 of international brands — delivering excellent value without compromising performance.
Fast Delivery
Standard lead time is just 7–15 days, with most custom orders completed within 30 days. Much faster than the 2–3 months typical of other major brands.
Proven Solutions in the Field
A showcase of our successful collaborations with global marine robotics, energy, and research partners. Every project reflects our commitment to zero-leak integrity and operational reliability.
60MPa Metal Shell Bulkhead Connector with Triple Seal (4-61 Pins)
PBOF Series Pressure-Balanced Oil-Filled Subsea Connectors
Custom High-Intensity Subsea LED Light & Mounting Bracket System
RMG Series 4-Pin Subsea Engineering Cable Plug
Multi-Core Split-Type Watertight Connector (Diverse Configurations)
Custom Retractable Subsea Spiral Coiled Cable (Spring Cable)
HYSF-custom-6-pin-40A-underwater-power-distribution-connector
5MP High-Definition Underwater Camera (40MPa / 316L Stainless Steel)
10-Pin Ethernet Subsea Connector (2 Power + 8 Network Cores)
70MPa Ultra-High Pressure Metal 61-Pin Subsea Connector
Gigabit Ethernet 12-Pin Subsea Connector (4 Power + 8 Network)
Custom 6-Port Watertight Enclosure & Subsea Interconnect System
High-Performance Photoelectric Hybrid Subsea Connector
Custom 6-Port Watertight Enclosure & Subsea Interconnect System
Custom Subsea Bulkhead Flange Joint Connector
60MPa High-Pressure Metal Shell Watertight Connector (4-61 Pins)
MCPBOF2-8MF Oil-Filled Pressure Compensated Connector (8-Pin)
Custom 1-to-3 Fan-out Subsea Splitter Cable System
Micro Flange 3-Pin Subsea Bulkhead Connector (IL4MF Compatible)
Custom 6-Pin / 40A Medium-Power Subsea Connector
Custom Branching Subsea Cable Network (Tree Topology)
50MPa High-Precision Subsea Pressure Sensor
Single-Pin High-Current (150A) Subsea Power Connector
HYSF-high-density-25-pin-subsea-signal-connector-for-oceanographic-sensors
Miniature Subsea Watertight Connector (Marine Bronze Base)
Custom Branching Subsea Cable Network (Y-Splitter & Multi-Node)
5MP High-Definition Underwater Observation Camera (40MPa)
MCBH-Hybrid 4+2 Photoelectric Subsea Connector (Power & Fiber Optic)
Integrated Subsea Interconnect & Imaging Solutions
Custom Miniature Single-Core In-Line Watertight Connector
Custom Molded Subsea Penetrator with Integrated Multi-Core Cable
Right Angle Molded Micro Bulkhead Connector (LPMBH-IL12/16MF Compatible)
HYSF-140A-180A-high-current-underwater-power-connector-for-thrusters
All-New Next-Generation Subsea IP Network Camera Series
High-Frequency Subsea Coaxial RF Connector Assembly (50-3 / 50-5)
Ultra-Miniature Subsea Watertight Connector Series (2-28 Pins)
High-Strength Titanium Alloy Subsea Penetrator
Start Your Subsea Project with HYSF
Whether you need a quick quote for standard connectors or a complex custom cable assembly, our engineering team is ready to assist. Expect a technical response within 12 hours.
- Our team will answer your inquiries within 12 hours.
- Your information will be kept strictly confidential.