SKU: 

HYSF-MCIL-4M

HYSF MCIL4M Miniature Circular 4-Pin Male Inline Underwater Connector

Optional: Anodized Aluminum Bulkhead with Dual O-Ring Sealing

The HYSF MCIL4M is a compact, high-reliability 4-core male inline watertight connector engineered for demanding subsea and deep-sea applications. Ideal for multi-channel power and signal transmission in space-constrained systems such as micro-ROVs, AUVs, underwater sensors, marine robotics, and oceanographic instrumentation requiring absolute waterproof performance. Built with marine-grade neoprene, gold-plated contacts, and precision machining, it delivers IP68-rated sealing and pressure resistance up to 60 MPa (6000-meter depth). Low contact resistance, excellent corrosion resistance, and over 500 mating cycles make it a trusted choice for offshore exploration, deep-water equipment, and reliable subsea electrical connections.

Series

Miniature Series

Number of Contacts

Mounting Thread

Electrical Rating

Connector Type

Body Material

Series

  • Cable Length (Standard): 1.0m (Inline) / 0.3m (Bulkhead)

  • Customization: Cable length, mounting threads, and electrical ratings available upon request.

  • ROVs & AUVs: Thruster connections and tether management.

  • Underwater Cameras: Video signal transmission.

  • Sensors & Instrumentation: CTD, Sonar, and Hydrophones.

  • Diving Equipment: Diver communication systems.

  • Offshore Energy: Oil & Gas subsea control modules.

Contact

Jason Liu

Chief Technical Officer

HYSF Subsea

jason@hysfsubsea.com

Manufacturing Showcase & Details

Explore high-resolution photos of actual production units. These images highlight our precision machining, quality overmolding, and attention to detail in every connector we ship.

Request a Quote or Custom Solution

Looking for bulk pricing or specific cable lengths (e.g., 0.3m, 1m, or custom)? Fill out the form below, and our sales team will send you a formal quotation within 12 hours.

John Zhang

CEO

Jason Liu
Kevin Wang
Cindy Chen
Lily Li
Contact Form Demo