How do I install the Bulkhead (BCR) onto my housing?

Ensure the mounting surface is smooth (Ra 1.6) and clean. Install the connector with the provided O-ring and Washer. Tighten the nut to the recommended torque (e.g., 4.5 – 5.5 Nm for 7/16-20 UNF). Do not use thread locker (Loctite) on the plastic threads unless specified, as some chemicals attack the connector body.

The bulkhead interface is the most critical leak path.

Hole Prep: The through-hole should have a small chamfer (0.5mm) to help the O-ring seat.
Washer: Always place the washer between the nut and the inside wall of your housing to prevent the nut from digging into the material while turning.
Torque: Use a torque wrench. Under-tightening causes leaks; over-tightening extrudes the O-ring.
Orientation: Ensure the “Key” or Guide Pin is oriented correctly (usually facing up) before tightening the nut, so your cables hang naturally.

John Zhang

(CEO & Lead Engineer)
Email: info@hysfsubsea.com
With over 15 years of expertise in subsea interconnect technology, I lead HYSF's R&D team in designing high-pressure (60MPa) solutions. My focus is on ensuring zero-leakage reliability for ROVs, AUVs, and offshore instrumentation. I personally oversee the validation of our custom connector prototypes.

Have a complex technical question?

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.

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

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

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

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

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

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

Custom Molded Subsea Penetrator with Integrated Multi-Core Cable

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

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

Custom Subsea Bulkhead Flange Joint Connector

PBOF Series Pressure-Balanced Oil-Filled Subsea Connectors

Custom High-Intensity Subsea LED Light & Mounting Bracket System

All-New Next-Generation Subsea IP Network Camera Series

High-Strength Titanium Alloy Subsea Penetrator

Integrated Subsea Interconnect & Imaging Solutions

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

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

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

Custom Branching Subsea Cable Network (Tree Topology)

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

Custom 6-Port Watertight Enclosure & Subsea Interconnect System

High-Performance Photoelectric Hybrid Subsea Connector

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

Custom 6-Port Watertight Enclosure & Subsea Interconnect System

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

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

RMG Series 4-Pin Subsea Engineering Cable Plug

Custom Miniature Single-Core In-Line Watertight Connector

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

Custom Retractable Subsea Spiral Coiled Cable (Spring Cable)

Miniature Subsea Watertight Connector (Marine Bronze Base)

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

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

50MPa High-Precision Subsea Pressure Sensor

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

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

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

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.