Metallic Sealing Couplings target subsea applications.

Press Release Summary:

Designed to handle working pressures up to 22,500 psi and temperatures from -22 to 350°F, HMO Couplings feature floating mount design, with built-in double-stage guiding system, allowing them to fully align before engaging seal area. Floating design allows for max axial misalignment of .026° and max radial misalignment of .046 in., without additional guidance. Available in ¼, 3/8, ½, and 1 in. sizes, couplings are suited for flying leads, stab plates, control modules, or fluid injection.

Original Press Release:

Stäubli Connectors Introduces the HMO Line of Metallic Sealing Couplings for Subsea Applications

DUNCAN, SC, - Stäubli Corporation, a leading manufacturer of quick connector systems, announces the introduction of the HMO line for subsea applications. The HMO coupling is designed to handle working pressures of up to 22,500 psi and temperatures from -22°F to 350°F, making it an ideal choice for HPHT applications for flying leads, stab plates, control modules or fluid injection.

The HMO coupling has a floating mount design, with a built-in double-stage guiding system, allowing it to fully align before engaging the seal area. The floating design allows for a maximum axial misalignment of .026° and maximum radial misalignment of .046 inches, without additional guidance. This feature reduces stresses on both the coupling and seals, minimizing galling and scratching that otherwise would reduce the leak tightness and life of the coupling.

Thank to its construction, the HMO coupling allows to make and break with full residual pressure, no sealing element being positioned in the flow line.

The metallic sealing is done via a high technology seal, with an outer layer of Inconel 600 encapsulating a Nimonic spring. This innovative design creates a highly resilient sealing surface, adjusting to imperfections and compatible with axial motion between plug and socket.

The HMO subsea coupling is available in ¼", 3/8", ½", and 1" sizes. Coupling body of Nitronic 50 and 60.

For more information, stop by booth 3505 at Offshore Technology Conference to preview the HMO line and connection solutions for all types of fluids, gases and electrical power.

About Stäubli:

Stäubli is a mechatronics solutions provider with three dedicated divisions: Textile Machinery, Connectors and Robotics. With a workforce of 3700, Stäubli has a presence in 25 countries and agents in 50 countries around the world. For more information, visit

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