MCBH2M 2 0-Ring Micro Circular Double O-ring Male Bulkhead Underwater Connector

MCBH2M Micro Circular Bulkhead Connector — Overview

The MCBH2M is a 2-contact Micro Circular bulkhead subsea connector, male (pins) face, wet-mateable and rated to 10 A per contact (20 A per connector) at 7,000 m working depth. It mounts through a standard 7/16-20 UNF-2A hull penetration and is supplied with colour-coded PTFE leads for direct splicing inside the housing.

2 Contacts 600 V AC/DC 10 A per Contact 7,000 m Depth 500+ Wet Matings IP68 Double O-Ring

Key Design Features

• Wet-mateable: mate and demate in seawater; each contact carries its own moulded O-ring seal, so a single seal failure does not flood the connector.
• SubConn Compatible: identical face geometry, contact pitch and 7/16-20 UNF-2A thread, so it retrofits existing SubConn panels and harnesses without re-machining.
• Gold-plated contacts: brass UNS-C36000 contacts hold contact resistance below 0.01 Ω across the full 500-cycle life.
• 10 A per contact: rated current with a 20 A connector limit for the 2-contact shell.
• Pressure qualified: 1,400 bar mated design depth, 800 bar open face, so the face survives handling and storage unmated.
• Brass body: matched to the housing material to avoid galvanic couples; brass, 316L stainless, titanium, anodised aluminium and PEEK are available across the range.
• Double O-ring: two nitrile seals in series give redundant sealing for penetrations that cannot be serviced at sea.

Technical Specifications

Materials

Leads & Termination

Mating & Compatibility

Typical Applications

Critical power penetrations, unmanned deployments, long-duration moorings where a single seal is not acceptable.

Notes for Selection

Double O-ring version: two independent nitrile seals in series, so a nick on one ring does not flood the housing. Same 10 A contacts and 7/16-20 UNF thread as the standard part.