What are MIL-C-24217 Connectors?

Meet the Connector: Mil-C-24217 Connectors

MIL-C-24217 is the U.S. military specification for rugged, metal-shell electrical connectors.  Designed for deep submergence submarine applications.

MIL-C-24217 is the U.S. military specification for rugged, metal-shell electrical connectors designed for U.S. Navy deep submergence submarine applications. They are made to withstand hydrostatic pressures up to 10,000 psi and are used for underwater sensors, deep-sea equipment, and dry-mate applications that require high reliability.

Connector types include straight plugs and right-angle plugs, available with mating weld receptacles, flange weld receptacles, end flange bolted receptacles, mid flange bolted receptacles, locknut flange bolted receptacles, bulkhead receptacles, and in-line receptacles.

TE Connectivity’s M24217 series hermetic connectors (SEACON) are used in undersea and military applications are suitable for any operation where pressure, humidity, or temperature impact performance. A full range of receptacle mounting styles are available and contact configurations range from single coaxial to 48 size #16 conductors. All TE SEACON connectors, plugs can be supplied terminated and molded into waterproof cable assemblies or supplied in kit form.

Design Notes

Standards: MIL-C-24217

Materials: Typically made of 316/316L stainless steel, though other materials like Monel or titanium are used.

Mounting type or types: Bulkhead/flange-mounted options

Contacts: Available in various sizes (#16, #12, #8, #0) and pin counts, including coax configurations.

Environmental properties: Glass-to-metal sealed contacts in receptacles provide superior pressure barriers.

Pressure Rating: Capable of operating between 0 to 6,500 psig (450 bar), with testing capabilities up to 10,000 psi.

Markets and Applications

Military

Submarine systems, underwater sensors, and deep-sea equipment.

Suppliers

TE Connectivity, AMETEK, Teledyne DGO (Teledyne Marine), Birns

Like this article? Check out our other Meet the Connector and Connector Basics articles, our Military and Aerospace Market Page, and our 2025  and 2026 Article Archives. 

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