Miniature Circular Connectors

High-Performance Subsea Connectors & Underwater Equipment

Explore HYSF’s comprehensive range of wet-mateable electrical connectors, from Miniature (MC) Series for compact vehicles to High-Power High-Current solutions for heavy subsea machinery. Whether you need standard off-the-shelf components or fully customized interconnect systems, we deliver reliability under pressure.

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.

Custom 6-Port Watertight Enclosure & Subsea Interconnect System

Integrated Subsea Interconnect & Imaging Solutions

Custom Miniature Single-Core In-Line Watertight Connector

Custom Molded Subsea Penetrator with Integrated Multi-Core Cable

Multi-Core Split-Type Watertight Connector (Diverse Configurations)

Micro Flange 3-Pin Subsea Bulkhead Connector (IL4MF Compatible)

Custom High-Intensity Subsea LED Light & Mounting Bracket System

70MPa Ultra-High Pressure Metal 61-Pin Subsea Connector

Custom Retractable Subsea Spiral Coiled Cable (Spring Cable)

Custom Branching Subsea Cable Network (Y-Splitter & Multi-Node)

MCBH-Hybrid 4+2 Photoelectric Subsea Connector (Power & Fiber Optic)

Custom 6-Pin / 40A Medium-Power Subsea Connector

HYSF-140A-180A-high-current-underwater-power-connector-for-thrusters

PBOF Series Pressure-Balanced Oil-Filled Subsea Connectors

50MPa High-Precision Subsea Pressure Sensor

HYSF-custom-6-pin-40A-underwater-power-distribution-connector

Gigabit Ethernet 12-Pin Subsea Connector (4 Power + 8 Network)

Miniature Subsea Watertight Connector (Marine Bronze Base)

Custom Subsea Bulkhead Flange Joint Connector

60MPa High-Pressure Metal Shell Watertight Connector (4-61 Pins)

5MP High-Definition Underwater Observation Camera (40MPa)

MCPBOF2-8MF Oil-Filled Pressure Compensated Connector (8-Pin)

10-Pin Ethernet Subsea Connector (2 Power + 8 Network Cores)

Custom 1-to-3 Fan-out Subsea Splitter Cable System

RMG Series 4-Pin Subsea Engineering Cable Plug

High-Frequency Subsea Coaxial RF Connector Assembly (50-3 / 50-5)

Single-Pin High-Current (150A) Subsea Power Connector

High-Performance Photoelectric Hybrid Subsea Connector

5MP High-Definition Underwater Camera (40MPa / 316L Stainless Steel)

Custom 6-Port Watertight Enclosure & Subsea Interconnect System

HYSF-high-density-25-pin-subsea-signal-connector-for-oceanographic-sensors

High-Strength Titanium Alloy Subsea Penetrator

Right Angle Molded Micro Bulkhead Connector (LPMBH-IL12/16MF Compatible)

All-New Next-Generation Subsea IP Network Camera Series

60MPa Metal Shell Bulkhead Connector with Triple Seal (4-61 Pins)

Ultra-Miniature Subsea Watertight Connector Series (2-28 Pins)

Custom Branching Subsea Cable Network (Tree Topology)

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.