{"id":9381,"date":"2026-10-25T05:37:38","date_gmt":"2026-10-25T05:37:38","guid":{"rendered":"https:\/\/hysfsubsea.com\/?post_type=product&p=9381"},"modified":"2026-10-25T06:04:45","modified_gmt":"2026-10-25T06:04:45","slug":"bh25m-25-pin-male-bulkhead-subconn-compatible-underwater-connector","status":"publish","type":"product","link":"https:\/\/hysfsubsea.com\/es\/product\/bh25m-25-pin-male-bulkhead-subconn-compatible-underwater-connector\/","title":{"rendered":"BH25M 25-Pin Male Bulkhead Underwater Connector \u2013 SubConn Compatible | HYSF SUBSEA"},"content":{"rendered":"

BH25M 25-Pin Male Bulkhead Underwater Connector \u2013 SubConn Compatible Standard Circular Series<\/h1>\n

Product Overview<\/h2>\n

The HYSF SUBSEA BH25M 25-Pin Male Bulkhead Underwater Connector<\/strong> is a high-density, pressure-resistant subsea electrical connector designed to provide reliable multi-channel power, signal, and control connections through underwater equipment housings.<\/p>\n

As part of the HYSF Standard Circular Connector Series, the BH25M features twenty-five male electrical contacts, a corrosion-resistant 316L stainless steel housing<\/strong>, and a threaded bulkhead mounting arrangement designed for demanding marine environments.<\/p>\n

The connector provides a fixed electrical interface between the internal electronics of a sealed underwater enclosure and an external subsea cable assembly.<\/p>\n

The Standard Circular series is designed for underwater applications at depths of up to 6,000 meters (60 MPa)<\/strong>, subject to the qualification of the complete connector installation.<\/p>\n

The BH25M belongs to the 25-pin Standard Circular configuration, which has a nominal rated current of 5A per contact<\/strong> and a series rated voltage of 550V AC\/DC<\/strong>.<\/p>\n

Selected higher-current contact configurations may support up to 10A, depending on the approved connector design. These higher ratings should not be applied automatically to every contact.<\/p>\n

The standard BH25M features a 3\/4-16 UNF-2A mounting thread<\/strong>, a nominal 25 mm thread length<\/strong>, and approximately 0.3 meters of internal wire leads<\/strong> for integration into subsea equipment.<\/p>\n

The BH25M is designed to mate with the IL25F 25-Pin Female Inline Underwater Connector<\/strong>.<\/p>\n

Its mating interface is designed for compatibility with corresponding SubConn and SEACON Standard Circular underwater connectors.<\/p>\n

Typical applications include remotely operated vehicles (ROVs), autonomous underwater vehicles (AUVs), sonar systems, hydrophone arrays, oceanographic instruments, offshore monitoring equipment, subsea electronic modules, and marine scientific research platforms.<\/p>\n

Key Features and Benefits<\/h2>\n

1. High-Density 25-Pin Male Electrical Interface<\/h3>\n

The BH25M incorporates twenty-five electrical contact positions within a single circular bulkhead connector.<\/p>\n

Its high-density configuration provides an efficient solution for underwater equipment requiring numerous independent electrical channels through one pressure housing penetration.<\/p>\n

The twenty-five contacts can be allocated to appropriately designed circuits involving:<\/p>\n

    \n
  • Underwater sensor signals<\/li>\n
  • Marine instrumentation<\/li>\n
  • Electrical control functions<\/li>\n
  • Low-power distribution<\/li>\n
  • Acoustic measurement circuits<\/li>\n
  • Environmental monitoring<\/li>\n
  • Auxiliary equipment connections<\/li>\n
  • Multi-channel data acquisition<\/li>\n
  • Subsea electronic systems<\/li>\n<\/ul>\n

    Compared with multiple low-pin-count bulkhead connectors, a single 25-pin interface may reduce the number of openings required in an underwater enclosure.<\/p>\n

    This can simplify mechanical design, internal cable routing, external cable management, and equipment maintenance.<\/p>\n

    The actual electrical circuit allocation must be determined using the approved pin assignment and wiring documentation.<\/p>\n

    2. Nominal Current Rating of 5A per Contact<\/h3>\n

    The BH25M belongs to the HYSF Standard Circular 12\/16\/25 Pin connector family.<\/p>\n

    The 25-pin configuration has a nominal current rating of 5A per contact<\/strong>.<\/p>\n

    This differs from the Standard 12-pin and 16-pin configurations, which have a catalog current rating of 10A per contact.<\/p>\n

    The manufacturer’s 25-pin series documentation also identifies selected higher-current configurations that may support up to 10A.<\/p>\n

    However, the exact contact positions and conditions associated with these ratings must be verified against the approved connector specifications.<\/p>\n

    The permissible electrical loading of a completed assembly depends on:<\/p>\n

      \n
    • Individual contact ratings<\/li>\n
    • Internal wire cross-sectional area<\/li>\n
    • Number of simultaneously energized circuits<\/li>\n
    • Cable termination quality<\/li>\n
    • Operating temperature<\/li>\n
    • Heat dissipation<\/li>\n
    • Voltage drop<\/li>\n
    • Installation conditions<\/li>\n<\/ul>\n

      For equipment requiring continuous operation near the maximum electrical rating, the complete connector and wiring system should be evaluated for thermal and electrical performance.<\/p>\n

      3. 550V AC\/DC Rated Voltage<\/h3>\n

      The HYSF Standard Circular connector family supports a rated voltage of 550V AC\/DC<\/strong>.<\/p>\n

      The BH25M can be integrated into suitable underwater electrical systems operating within the approved voltage limits of the connector and complete assembly.<\/p>\n

      When designing a multi-channel subsea connection, engineers should consider conductor insulation, circuit separation, connected equipment, and environmental conditions.<\/p>\n

      The permitted operating voltage must not exceed the rating of the lowest-rated component in the completed electrical system.<\/p>\n

      4. SubConn and SEACON Compatible Standard Circular Interface<\/h3>\n

      The HYSF BH25M is designed for mating compatibility with corresponding SubConn and SEACON Standard Circular 25-pin connector interfaces<\/strong>.<\/p>\n

      This makes the BH25M suitable for consideration in compatible replacement projects and newly developed subsea equipment.<\/p>\n

      Applications may include:<\/p>\n

        \n
      • Replacement underwater bulkhead connectors<\/li>\n
      • ROV electrical system upgrades<\/li>\n
      • Marine instrumentation maintenance<\/li>\n
      • Offshore subsea equipment<\/li>\n
      • OEM underwater electrical systems<\/li>\n
      • Custom subsea cable integration<\/li>\n<\/ul>\n

        The primary corresponding cable connector is the IL25F female inline underwater connector<\/strong>.<\/p>\n

        Before using a BH25M with another manufacturer’s connector, verify the exact product series, contact arrangement, mating geometry, retention system, and installation requirements.<\/p>\n

        Matching contact count alone does not guarantee compatibility.<\/p>\n

        5. Deep-Sea Design Capability up to 6,000 Meters<\/h3>\n

        The HYSF Standard Circular connector family is designed for subsea environments involving high external hydrostatic pressure.<\/p>\n

        The series supports a design depth capability of up to 6,000 meters<\/strong>, equivalent to approximately 60 MPa<\/strong>.<\/p>\n

        This makes the BH25M suitable for consideration in:<\/p>\n

          \n
        • Deep-sea exploration<\/li>\n
        • Seabed scientific research<\/li>\n
        • Offshore underwater monitoring<\/li>\n
        • Subsea robotic systems<\/li>\n
        • Oceanographic instruments<\/li>\n
        • Deep-water sensor networks<\/li>\n
        • Underwater electronic enclosures<\/li>\n<\/ul>\n

          The BH25M provides a sealed electrical passage through an equipment housing when installed using the approved mounting and sealing arrangement.<\/p>\n

          Actual operating depth depends on the complete installation, including:<\/p>\n

            \n
          • Connector housing<\/li>\n
          • Bulkhead mounting interface<\/li>\n
          • O-ring sealing system<\/li>\n
          • Equipment enclosure<\/li>\n
          • Internal electrical terminations<\/li>\n
          • External mating cable connector<\/li>\n
          • Complete assembly qualification<\/li>\n<\/ul>\n

            For critical deep-water applications, the installed connector assembly should be verified for the intended operating pressure.<\/p>\n

            6. Marine-Grade 316L Stainless Steel Housing<\/h3>\n

            The standard BH25M uses a 316L stainless steel housing<\/strong>.<\/p>\n

            316L stainless steel is widely used in marine engineering because of its combination of corrosion resistance and mechanical strength.<\/p>\n

            The material provides a durable housing for the electrical contacts and threaded bulkhead mounting arrangement.<\/p>\n

            Its advantages include:<\/p>\n

              \n
            • Good corrosion resistance in marine environments<\/li>\n
            • Mechanical strength<\/li>\n
            • Dimensional stability<\/li>\n
            • Durable threaded mounting<\/li>\n
            • Resistance to routine equipment handling<\/li>\n
            • Suitability for demanding subsea installations<\/li>\n<\/ul>\n

              Alternative housing materials may be considered for specific engineering projects.<\/p>\n

              When stainless steel connectors are installed in aluminum pressure housings, the potential for galvanic corrosion should be evaluated.<\/p>\n

              Appropriate material selection, protective coatings, and electrical isolation may be necessary.<\/p>\n

              7. Precision 3\/4-16 UNF-2A Bulkhead Mounting Thread<\/h3>\n

              The BH25M is designed for threaded installation through underwater equipment enclosures.<\/p>\n

              The Standard Circular 12\/16\/25 Pin technical documentation specifies:<\/p>\n

                \n
              • Mounting Thread:<\/strong> 3\/4-16 UNF-2A<\/li>\n
              • Nominal Thread Length:<\/strong> 25 mm<\/li>\n
              • Base Mounting Radius:<\/strong> 32.4 mm<\/li>\n
              • Recommended Mounting Surface Roughness:<\/strong> Ra 1.6<\/li>\n
              • Mounting Type:<\/strong> Threaded Bulkhead<\/li>\n<\/ul>\n

                The threaded design allows the connector to be secured through a compatible pressure housing wall.<\/p>\n

                The standard mounting arrangement includes the specified locking nut, with POM as the standard nut material and 316L stainless steel available as an alternative.<\/p>\n

                Before machining the equipment enclosure, the exact installation dimensions should be checked against the approved BH25M mechanical drawing.<\/p>\n

                Thread size alone is not sufficient to determine the required hole geometry, sealing dimensions, and panel thickness.<\/p>\n

                8. Watertight O-Ring Sealing System<\/h3>\n

                The BH25M uses an O-ring sealing arrangement designed to help prevent seawater ingress through the bulkhead mounting interface.<\/p>\n

                The sealing performance depends on several installation factors:<\/p>\n

                  \n
                • Correct O-ring dimensions<\/li>\n
                • Suitable elastomer material<\/li>\n
                • Accurate mounting geometry<\/li>\n
                • Proper sealing surface finish<\/li>\n
                • Appropriate O-ring compression<\/li>\n
                • Correct installation procedure<\/li>\n
                • Housing wall thickness<\/li>\n
                • Mechanical loading conditions<\/li>\n<\/ul>\n

                  The sealing components should be inspected before installation.<\/p>\n

                  For equipment operating at high hydrostatic pressure, the complete bulkhead installation should be included in the pressure qualification process.<\/p>\n

                  9. Standard 0.3-Meter Internal Wire Leads<\/h3>\n

                  The BH25M is normally supplied with approximately 0.3 meters of internal wire leads<\/strong>.<\/p>\n

                  These leads extend from the rear of the connector into the underwater equipment housing.<\/p>\n

                  They provide electrical integration with:<\/p>\n

                    \n
                  • Electronic control boards<\/li>\n
                  • Sensor electronics<\/li>\n
                  • Power distribution terminals<\/li>\n
                  • Marine instrumentation<\/li>\n
                  • Internal wiring harnesses<\/li>\n
                  • Data acquisition systems<\/li>\n
                  • Subsea monitoring modules<\/li>\n<\/ul>\n

                    Custom lead lengths and specialized termination configurations can be specified according to project requirements.<\/p>\n

                    The actual wire identification and pin-to-wire assignment must be verified using the approved production drawing.<\/p>\n

                    10. Gold-Plated Electrical Contacts<\/h3>\n

                    The BH25M incorporates gold-plated electrical contact surfaces.<\/p>\n

                    Gold plating provides a stable conductive surface and helps reduce oxidation that can affect electrical contact performance.<\/p>\n

                    This is especially important for underwater instruments and monitoring systems requiring dependable electrical continuity.<\/p>\n

                    Before mating the connector, the contact interface should be inspected for contamination, foreign particles, or visible mechanical damage.<\/p>\n

                    Correct handling and appropriate maintenance can help preserve reliable connector performance.<\/p>\n

                    11. Wet-Mateable Underwater Connector Design<\/h3>\n

                    The BH25M belongs to HYSF SUBSEA’s wet-mateable Standard Circular connector family.<\/p>\n

                    The mating interface is designed to support underwater connection and disconnection according to the applicable operating procedures.<\/p>\n

                    Wet-mateable technology is useful for underwater systems requiring:<\/p>\n

                      \n
                    • Periodic sensor replacement<\/li>\n
                    • Modular instrument installation<\/li>\n
                    • Underwater cable servicing<\/li>\n
                    • Equipment maintenance<\/li>\n
                    • Subsea component reconfiguration<\/li>\n<\/ul>\n

                      Importante:<\/strong> Wet-mateable does not automatically mean live-mateable.<\/p>\n

                      Electrical power should be isolated before mating or unmating unless the complete connector assembly has been specifically qualified for energized operation.<\/p>\n

                      BH25M Technical Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                      Par\u00e1metro<\/th>\nSpecification<\/th>\n<\/tr>\n
                      Brand<\/td>\nHYSF SUBSEA<\/td>\n<\/tr>\n
                      Model Number<\/td>\nBH25M<\/td>\n<\/tr>\n
                      Serie de productos<\/td>\nStandard Circular<\/td>\n<\/tr>\n
                      Tipo de conector<\/td>\nMale Bulkhead Underwater Connector<\/td>\n<\/tr>\n
                      N\u00famero de contactos<\/td>\n25<\/td>\n<\/tr>\n
                      Contact Gender<\/td>\nMale<\/td>\n<\/tr>\n
                      Contact Finish<\/td>\nGold-Plated<\/td>\n<\/tr>\n
                      Standard Housing Material<\/td>\nAcero inoxidable 316L<\/td>\n<\/tr>\n
                      Optional Housing Materials<\/td>\nSubject to Engineering Configuration<\/td>\n<\/tr>\n
                      Rated Voltage<\/td>\n550V AC\/DC<\/td>\n<\/tr>\n
                      Nominal Rated Current<\/td>\n5A per Contact<\/td>\n<\/tr>\n
                      Selected Higher-Current Configurations<\/td>\nUp to 10A, Subject to Confirmation<\/td>\n<\/tr>\n
                      Design Depth Capability<\/td>\nUp to 6,000 Meters<\/td>\n<\/tr>\n
                      Pressure Capability<\/td>\nUp to 60 MPa<\/td>\n<\/tr>\n
                      Mating Type<\/td>\nWet-Mateable<\/td>\n<\/tr>\n
                      Mounting Type<\/td>\nThreaded Bulkhead<\/td>\n<\/tr>\n
                      Rosca de montaje<\/td>\n3\/4-16 UNF-2A<\/td>\n<\/tr>\n
                      Nominal Thread Length<\/td>\n25 mm<\/td>\n<\/tr>\n
                      Base Mounting Radius<\/td>\n32.4 mm<\/td>\n<\/tr>\n
                      Mounting Surface Roughness<\/td>\nRa 1.6<\/td>\n<\/tr>\n
                      Standard Internal Wire Length<\/td>\n0.3 Meter<\/td>\n<\/tr>\n
                      Sealing System<\/td>\nO-Ring Sealing<\/td>\n<\/tr>\n
                      Primary Mating Connector<\/td>\nIL25F<\/td>\n<\/tr>\n
                      Protective Dummy Plug<\/td>\nDC25F<\/td>\n<\/tr>\n
                      Compatibility<\/td>\nCorresponding SubConn and SEACON Standard Circular Interfaces<\/td>\n<\/tr>\n
                      Garant\u00eda<\/td>\n12 Months<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      Engineering Note:<\/strong> The nominal current rating is 5A per contact. Higher-current configurations require verification of the specific contact arrangement, internal wiring, and complete assembly.<\/p>\n

                      25-Pin Wiring and Conductor Identification<\/h2>\n

                      The BH25M provides twenty-five contact positions for multiple electrical circuits.<\/p>\n

                      Depending on the selected configuration, the rear wire leads may use different conductor colors, numbered sleeves, or customized identification systems.<\/p>\n

                      The Standard Circular 25-pin inline cable family includes wiring arrangements that use individual conductors and twisted-pair constructions.<\/p>\n

                      However, the inline cable color sequence should not automatically be applied to the BH25M internal leads.<\/p>\n

                      The actual bulkhead wiring depends on the approved production configuration.<\/p>\n

                      Recommended Wiring Verification<\/h3>\n

                      Before connecting the BH25M to internal electronics:<\/p>\n

                        \n
                      1. Confirm the connector contact numbering using the correct mating-face view.<\/li>\n
                      2. Identify every internal conductor.<\/li>\n
                      3. Review the approved pin-to-wire drawing.<\/li>\n
                      4. Verify each circuit using electrical continuity testing.<\/li>\n
                      5. Confirm the required power, ground, signal, and control assignments.<\/li>\n
                      6. Record customized wiring arrangements for future maintenance.<\/li>\n<\/ol>\n

                        The actual conductor color mapping should be verified against the wiring documentation supplied with the completed connector.<\/p>\n

                        Compatible Connectors and Accessories<\/h2>\n

                        IL25F \u2013 25-Pin Female Inline Underwater Connector<\/h3>\n

                        The IL25F<\/strong> is the primary female cable connector designed to mate with the BH25M male bulkhead.<\/p>\n

                        The IL25F features twenty-five female electrical contacts and an integrated underwater cable.<\/p>\n

                        The standard IL25F is normally supplied with approximately one meter of cable.<\/p>\n

                        Normal electrical configuration:<\/strong><\/p>\n

                        BH25M Male Bulkhead + IL25F Female Inline Connector<\/p>\n

                        This combination provides a detachable electrical connection between the equipment’s internal electronics and an external underwater cable assembly.<\/p>\n

                        DC25F \u2013 25-Pin Female Dummy Plug<\/h3>\n

                        The DC25F<\/strong> is the corresponding female protective dummy plug for the BH25M male bulkhead.<\/p>\n

                        When the operational IL25F cable connector is disconnected, the DC25F can be installed to help protect the exposed male connector interface.<\/p>\n

                        Protective configuration:<\/strong><\/p>\n

                        BH25M Male Bulkhead + DC25F Female Dummy Plug<\/p>\n

                        The dummy plug is a protective accessory and does not transmit electrical power or signals.<\/p>\n

                        Its pressure suitability must be verified for the complete capped connector assembly.<\/p>\n

                        BH25F \u2013 25-Pin Female Bulkhead Underwater Connector<\/h3>\n

                        The BH25F<\/strong> is the corresponding female bulkhead model within the same Standard Circular 25-pin family.<\/p>\n

                        Its primary mating cable connector is the IL25M male inline connector.<\/p>\n

                        The corresponding protective accessory is the DC25M male dummy plug.<\/p>\n

                        BH25M vs. BH25F<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                        Feature<\/th>\nBH25M<\/th>\nBH25F<\/th>\n<\/tr>\n
                        Tipo de producto<\/td>\nMale Bulkhead<\/td>\nFemale Bulkhead<\/td>\n<\/tr>\n
                        Contact Count<\/td>\n25<\/td>\n25<\/td>\n<\/tr>\n
                        Contact Gender<\/td>\nMale<\/td>\nFemale<\/td>\n<\/tr>\n
                        Standard Housing<\/td>\nAcero inoxidable 316L<\/td>\nAcero inoxidable 316L<\/td>\n<\/tr>\n
                        Rated Voltage<\/td>\n550V AC\/DC<\/td>\n550V AC\/DC<\/td>\n<\/tr>\n
                        Nominal Current<\/td>\n5A per Contact<\/td>\n5A per Contact<\/td>\n<\/tr>\n
                        Standard Wire Leads<\/td>\n0.3 m<\/td>\n0.3 m<\/td>\n<\/tr>\n
                        Rosca de montaje<\/td>\n3\/4-16 UNF-2A<\/td>\n3\/4-16 UNF-2A<\/td>\n<\/tr>\n
                        Primary Mating Connector<\/td>\nIL25F<\/td>\nIL25M<\/td>\n<\/tr>\n
                        Protective Dummy Plug<\/td>\nDC25F<\/td>\nDC25M<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                        The two bulkhead connectors have opposite contact genders and should be selected according to the required mating cable configuration.<\/p>\n

                        Typical Applications of BH25M Underwater Connectors<\/h2>\n

                        1. Remotely Operated Vehicles (ROVs)<\/h3>\n

                        ROVs often require multiple electrical connections between sealed pressure housings and external underwater equipment.<\/p>\n

                        The BH25M can provide a high-density interface for appropriate ROV sensor, instrumentation, and control circuits.<\/p>\n

                        Its twenty-five-contact arrangement may reduce the number of separate enclosure penetrations required.<\/p>\n

                        2. Autonomous Underwater Vehicles (AUVs)<\/h3>\n

                        AUVs frequently use modular electronic equipment and external scientific instruments.<\/p>\n

                        The BH25M can provide a fixed bulkhead electrical connection for appropriate AUV sensor and monitoring systems.<\/p>\n

                        The detachable mating configuration supports equipment maintenance and cable replacement.<\/p>\n

                        3. Sonar and Hydrophone Systems<\/h3>\n

                        Underwater acoustic systems may require numerous electrical channels for measurement, sensor excitation, control, and monitoring.<\/p>\n

                        The BH25M offers twenty-five contact positions for suitable acoustic instrumentation.<\/p>\n

                        For low-level analog signals, appropriate shielding, grounding, and electromagnetic interference control should be considered.<\/p>\n

                        4. Oceanographic Research Instruments<\/h3>\n

                        Marine scientific instruments often require high-density electrical connections through watertight enclosures.<\/p>\n

                        The BH25M can be integrated into suitable:<\/p>\n

                          \n
                        • Oceanographic data acquisition systems<\/li>\n
                        • Environmental monitoring equipment<\/li>\n
                        • Marine sensor arrays<\/li>\n
                        • Underwater acoustic instruments<\/li>\n
                        • Seabed observation systems<\/li>\n
                        • Deep-water scientific instrumentation<\/li>\n<\/ul>\n

                          5. Underwater Cameras and Imaging Equipment<\/h3>\n

                          Subsea imaging systems may require multiple electrical circuits for camera power, control, and auxiliary sensors.<\/p>\n

                          The BH25M provides a fixed electrical interface through a properly designed underwater housing.<\/p>\n

                          High-speed data compatibility must be verified based on the complete cable design and signal requirements.<\/p>\n

                          6. Offshore Monitoring Equipment<\/h3>\n

                          Offshore subsea monitoring systems frequently operate under high hydrostatic pressure and prolonged seawater exposure.<\/p>\n

                          The BH25M can provide a durable high-density electrical connection for suitably designed instrumentation and monitoring equipment.<\/p>\n

                          7. Marine Research and Testing Systems<\/h3>\n

                          Underwater equipment manufacturers and research laboratories may require customizable electrical interfaces for specialized instruments.<\/p>\n

                          The BH25M provides a Standard Circular bulkhead configuration for appropriate prototype, testing, and scientific equipment.<\/p>\n

                          BH25M Installation Guidelines<\/h2>\n

                          Step 1: Verify the Installation Drawing<\/h3>\n

                          Confirm the 3\/4-16 UNF-2A mounting thread, nominal 25 mm thread length, and all sealing dimensions.<\/p>\n

                          Use the approved BH25M drawing before machining the enclosure.<\/p>\n

                          Step 2: Inspect the Connector<\/h3>\n

                          Check the stainless steel housing, mounting thread, electrical contacts, and sealing surfaces for damage.<\/p>\n

                          Step 3: Prepare the Equipment Housing<\/h3>\n

                          Machine the installation opening according to the approved drawing.<\/p>\n

                          Ensure the sealing surface is clean and free from burrs, scratches, and contamination.<\/p>\n

                          Step 4: Inspect and Install the O-Ring<\/h3>\n

                          Verify the correct O-ring specification.<\/p>\n

                          Inspect it for damage and follow the approved installation procedure.<\/p>\n

                          Step 5: Mount the BH25M<\/h3>\n

                          Position the connector through the enclosure wall.<\/p>\n

                          Secure it using the specified mounting hardware and tightening procedure.<\/p>\n

                          Step 6: Connect the Internal Wires<\/h3>\n

                          Route the standard internal wire leads to the equipment electronics.<\/p>\n

                          Verify the actual contact assignments before making the electrical connections.<\/p>\n

                          Step 7: Mate the IL25F Connector<\/h3>\n

                          Check both connector mating interfaces for contamination or damage.<\/p>\n

                          Align the IL25F correctly and complete the mating operation using the appropriate retention arrangement.<\/p>\n

                          Step 8: Verify Electrical and Sealing Performance<\/h3>\n

                          Perform the required electrical tests and verify the completed enclosure sealing system.<\/p>\n

                          For critical subsea equipment, the complete installation should meet the required pressure qualification.<\/p>\n

                          Quality Control and Testing<\/h2>\n

                          HYSF SUBSEA manufactures underwater electrical connectors and customized subsea interconnection assemblies.<\/p>\n

                          Depending on the product configuration and project requirements, quality-control procedures may include:<\/p>\n

                            \n
                          • Hydrostatic pressure testing<\/li>\n
                          • Electrical continuity testing<\/li>\n
                          • Insulation resistance measurement<\/li>\n
                          • Dielectric withstand testing<\/li>\n
                          • Contact inspection<\/li>\n
                          • Dimensional verification<\/li>\n
                          • O-ring sealing inspection<\/li>\n
                          • Internal wiring verification<\/li>\n
                          • Mechanical integrity evaluation<\/li>\n<\/ul>\n

                            Testing requirements and acceptance criteria should be defined according to the approved product configuration.<\/p>\n

                            Frequently Asked Questions<\/h2>\n

                            Q1: What is the BH25M underwater connector?<\/h3>\n

                            The BH25M is a 25-pin male bulkhead underwater electrical connector belonging to the HYSF Standard Circular Series.<\/p>\n

                            It is designed to provide multiple electrical connections through sealed subsea equipment housings.<\/p>\n

                            Q2: Which connector mates with BH25M?<\/h3>\n

                            The primary mating connector is the IL25F 25-Pin Female Inline Underwater Connector<\/strong>.<\/p>\n

                            Q3: Is BH25M compatible with SubConn?<\/h3>\n

                            The BH25M is designed for compatibility with corresponding SubConn Standard Circular 25-pin interfaces.<\/p>\n

                            Exact mechanical compatibility should be verified against the relevant product drawings.<\/p>\n

                            Q4: What is the rated current?<\/h3>\n

                            The nominal current rating is 5A per contact<\/strong>.<\/p>\n

                            Selected higher-current configurations may support up to 10A, subject to confirmation of the approved contact arrangement.<\/p>\n

                            Q5: What is the rated voltage?<\/h3>\n

                            The Standard Circular series is rated for 550V AC\/DC<\/strong>.<\/p>\n

                            Q6: What is the maximum operating depth?<\/h3>\n

                            The connector family is designed for applications up to 6,000 meters (60 MPa)<\/strong>, subject to the qualification of the complete installed assembly.<\/p>\n

                            Q7: What is the mounting thread?<\/h3>\n

                            The standard BH25M mounting thread is 3\/4-16 UNF-2A<\/strong>.<\/p>\n

                            Q8: What is the standard thread length?<\/h3>\n

                            The nominal mounting thread length is 25 mm<\/strong>.<\/p>\n

                            Q9: What is the standard housing material?<\/h3>\n

                            The standard BH25M housing is manufactured from Acero inoxidable 316L<\/strong>.<\/p>\n

                            Q10: What is the standard internal wire length?<\/h3>\n

                            The standard BH25M is normally supplied with approximately 0.3 meters of internal wire leads<\/strong>.<\/p>\n

                            Q11: Can the internal wire length be customized?<\/h3>\n

                            Yes. Customized internal wire lengths and termination arrangements can be specified according to project requirements.<\/p>\n

                            Q12: Is BH25M wet-mateable?<\/h3>\n

                            Yes. The BH25M belongs to the wet-mateable Standard Circular connector family.<\/p>\n

                            Electrical power should be isolated before mating or unmating unless energized operation has been specifically qualified.<\/p>\n

                            Q13: Which dummy plug protects BH25M?<\/h3>\n

                            The corresponding protective accessory is the DC25F 25-Pin Female Dummy Plug<\/strong>.<\/p>\n

                            Q14: What is the difference between BH25M and BH25F?<\/h3>\n

                            BH25M has twenty-five male contacts and primarily mates with IL25F.<\/p>\n

                            BH25F has twenty-five female contacts and primarily mates with IL25M.<\/p>\n

                            Q15: Can BH25M be installed in an aluminum housing?<\/h3>\n

                            Installation may be possible when the mechanical dimensions and sealing requirements are suitable.<\/p>\n

                            Potential galvanic corrosion between stainless steel and aluminum should be evaluated.<\/p>\n

                            Q16: Can BH25M be used for Ethernet?<\/h3>\n

                            The BH25M provides twenty-five electrical contacts, but contact count alone does not guarantee Ethernet compatibility.<\/p>\n

                            The complete cable construction, shielding, conductor pairing, impedance, and signal integrity must be verified.<\/p>\n

                            Why Choose HYSF SUBSEA BH25M?<\/h2>\n

                            The HYSF SUBSEA BH25M 25-Pin Male Bulkhead Underwater Connector<\/strong> provides a durable high-density electrical interface for marine and subsea equipment.<\/p>\n

                            Its main advantages include:<\/p>\n

                              \n
                            • Twenty-five male electrical contacts<\/li>\n
                            • SubConn-compatible Standard Circular mating interface<\/li>\n
                            • Wet-mateable connector design<\/li>\n
                            • Nominal 5A per contact rating<\/li>\n
                            • Selected higher-current options subject to verification<\/li>\n
                            • 550V AC\/DC rated voltage<\/li>\n
                            • Design depth capability up to 6,000 meters<\/li>\n
                            • Corrosion-resistant 316L stainless steel housing<\/li>\n
                            • 3\/4-16 UNF-2A mounting thread<\/li>\n
                            • Standard 0.3-meter internal wire leads<\/li>\n
                            • O-ring bulkhead sealing<\/li>\n
                            • Compatible IL25F female inline connector<\/li>\n
                            • Corresponding DC25F protective dummy plug<\/li>\n
                            • Customized wiring and material configurations<\/li>\n
                            • 12-month product warranty<\/li>\n<\/ul>\n

                              For underwater robotic vehicles, sonar systems, oceanographic instruments, offshore monitoring equipment, and deep-sea research platforms, the BH25M provides a practical solution for routing multiple electrical circuits through a single sealed equipment housing penetration.<\/p>\n

                              Its high-density contact configuration, durable metal housing, and compatibility with established Standard Circular connector interfaces make the BH25M suitable for demanding subsea electrical integration applications.<\/p>","protected":false},"excerpt":{"rendered":"

                              The HYSF SUBSEA BH25M 25-Pin Male Bulkhead Underwater Connector<\/strong> is a high-density, pressure-resistant subsea electrical connector designed for reliable multi-channel power, signal, and control connections through underwater equipment enclosures.<\/p>\n

                              As part of the HYSF Standard Circular Series, the BH25M features twenty-five gold-plated male electrical contacts<\/strong>, a corrosion-resistant 316L stainless steel housing<\/strong>, and an O-ring bulkhead sealing arrangement.<\/p>\n

                              The connector is designed for underwater applications at depths of up to 6,000 meters (60 MPa)<\/strong>, with a rated voltage of 550V AC\/DC<\/strong> and a nominal current rating of 5A per contact<\/strong>, subject to qualification of the complete connector assembly.<\/p>\n

                              Selected higher-current configurations may support up to 10A, depending on the approved contact arrangement and wiring specifications.<\/p>\n

                              The BH25M features a 3\/4-16 UNF-2A mounting thread<\/strong>, a nominal 25 mm thread length<\/strong>, and approximately 0.3 meters of internal wire leads<\/strong>.<\/p>\n

                              It is designed to mate with the IL25F 25-Pin Female Inline Underwater Connector<\/strong> and is compatible with corresponding SubConn and SEACON Standard Circular connector interfaces.<\/p>\n

                              Especificaciones clave<\/h3>\n
                                \n
                              • Model:<\/strong> BH25M<\/li>\n
                              • Brand:<\/strong> HYSF SUBSEA<\/li>\n
                              • Product Type:<\/strong> 25-Pin Male Bulkhead Underwater Connector<\/li>\n
                              • Series:<\/strong> Standard Circular<\/li>\n
                              • Contact Configuration:<\/strong> 25 Male Contacts<\/li>\n
                              • Contact Finish:<\/strong> Gold-Plated<\/li>\n
                              • Standard Housing:<\/strong> Acero inoxidable 316L<\/li>\n
                              • Rated Voltage:<\/strong> 550V AC\/DC<\/li>\n
                              • Nominal Rated Current:<\/strong> 5A per Contact<\/li>\n
                              • Higher-Current Configurations:<\/strong> Up to 10A, Subject to Verification<\/li>\n
                              • Design Depth:<\/strong> Up to 6,000 Meters<\/li>\n
                              • Pressure Capability:<\/strong> Up to 60 MPa<\/li>\n
                              • Mounting Thread:<\/strong> 3\/4-16 UNF-2A<\/li>\n
                              • Nominal Thread Length:<\/strong> 25 mm<\/li>\n
                              • Base Mounting Radius:<\/strong> 32.4 mm<\/li>\n
                              • Standard Internal Wire Length:<\/strong> 0.3 Meter<\/li>\n
                              • Sealing System:<\/strong> O-Ring<\/li>\n
                              • Mating Type:<\/strong> Wet-Mateable<\/li>\n
                              • Primary Mating Connector:<\/strong> IL25F<\/li>\n
                              • Protective Dummy Plug:<\/strong> DC25F<\/li>\n
                              • Compatibility:<\/strong> Corresponding SubConn and SEACON Standard Circular Interfaces<\/li>\n
                              • Personalizaci\u00f3n:<\/strong> Internal Wire Length, Housing Material, Contact Configuration, and Termination Options<\/li>\n
                              • Warranty:<\/strong> 12 Months<\/li>\n<\/ul>\n

                                Aplicaciones t\u00edpicas<\/h3>\n

                                The BH25M is suitable for:<\/p>\n

                                  \n
                                • Remotely Operated Vehicles (ROVs)<\/li>\n
                                • Autonomous Underwater Vehicles (AUVs)<\/li>\n
                                • Sonar and Hydrophone Arrays<\/li>\n
                                • Oceanographic Research Instruments<\/li>\n
                                • Underwater Sensor Networks<\/li>\n
                                • Marine Environmental Monitoring<\/li>\n
                                • Underwater Camera Systems<\/li>\n
                                • Offshore Inspection Equipment<\/li>\n
                                • Subsea Electronic Control Modules<\/li>\n
                                • Deep-Sea Scientific Equipment<\/li>\n
                                • Underwater Pressure Housings and Junction Boxes<\/li>\n<\/ul>\n

                                  Custom Bulkhead Connector Configurations<\/h3>\n

                                  HYSF SUBSEA supports customized BH25M configurations, including alternative internal wire lengths, conductor identification, housing materials, and specialized electrical terminations.<\/p>\n

                                  The standard BH25M includes approximately 0.3 meters of internal wire leads<\/strong>, while custom configurations can be evaluated according to the electrical and mechanical requirements of the equipment.<\/p>\n

                                  Importante:<\/strong> The nominal current rating of the 25-pin configuration is 5A per contact. Higher-current contact ratings require verification and should not be assumed to apply to every contact.<\/p>\n

                                  The BH25M provides a durable, high-density underwater electrical connection solution for subsea equipment requiring multiple circuits through a sealed pressure housing.<\/p>","protected":false},"featured_media":9382,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[30],"product_cat":[32],"product_tag":[],"class_list":["post-9381","product","type-product","status-publish","has-post-thumbnail","product_brand-hysf","product_cat-standard-circular-connectors","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/product\/9381","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/comments?post=9381"}],"version-history":[{"count":2,"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/product\/9381\/revisions"}],"predecessor-version":[{"id":9384,"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/product\/9381\/revisions\/9384"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/media\/9382"}],"wp:attachment":[{"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/media?parent=9381"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/product_brand?post=9381"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/product_cat?post=9381"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hysfsubsea.com\/es\/wp-json\/wp\/v2\/product_tag?post=9381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}