RMK-5-FSD 5-Socket Female Rubber Molded Dummy Underwater Connector

Product Overview

The HYSF SUBSEA RMK-5-FSD 5-Socket Female Rubber Molded Dummy Underwater Connector is a protective underwater connector accessory designed for commercial diving operations, diver communication systems, ROV equipment, subsea electrical systems, and marine applications.Featuring a five-position female mating configuration and a special molded neoprene rubber body, the RMK-5-FSD provides a protective dummy connection for compatible five-contact male underwater connectors.As part of the RMK Rubber Molded Connector Series, the RMK-5-FSD is designed to mate with the corresponding RMK-5-MP male in-line connector. Its primary function is to protect the exposed male connector interface when the functional electrical connection is not in use.The RMK-5-FSD features a molded neoprene rubber construction designed for demanding marine and subsea environments. Its protective female mating interface helps reduce exposure of the male connector contacts and mating surfaces to environmental contamination, foreign particles, and mechanical damage.Unlike a functional electrical cable connector, the RMK-5-FSD is a dummy connector without an external electrical cable. It is designed for connector protection rather than electrical power or signal transmission.According to the SEACON RMK Rubber Molded Connector Series specifications, the RMK-FSD dummy connector has a mated pressure rating of up to 20,000 psi (approximately 1,379 bar).The five-contact RMK-5-FSD configuration is designed for the corresponding five-contact RMK-5-MP male connector. The number of conductors must be specified when ordering to ensure the correct dummy connector configuration.The RMK-5-FSD is particularly suitable for commercial diving communication systems, diver umbilical cable assemblies, offshore diving equipment, ROV systems, underwater instruments, and subsea electrical equipment requiring protection of unused male connector interfaces.HYSF SUBSEA provides rubber molded underwater connectors, male and female dummy plugs, protective connector accessories, and customized subsea electrical connection solutions for commercial diving equipment manufacturers, offshore contractors, ROV integrators, and marine instrumentation suppliers.

Key Features and Benefits

1. Five-Position Female Dummy Configuration

The RMK-5-FSD features a five-position female mating configuration designed for compatible five-contact RMK male connectors.Its female dummy interface allows it to mate with the corresponding male connector and provide protection when the functional electrical cable connection is not in use.The five-contact RMK connector family uses the following reference electrical contact arrangement:

• Contact Position 1: #10
• Contact Position 2: #14
• Contact Position 3: #14
• Contact Position 4: #14
• Contact Position 5: #14

This arrangement corresponds to the five-contact RMK-5 connector family.The dummy connector is designed to match the compatible male connector interface rather than provide an independent electrical circuit.Key characteristics include:

• Five-position female dummy configuration
• RMK Size K connector interface
• Compatible five-contact male mating arrangement
• Special molded neoprene body
• Protective dummy connector construction
• Cable-free design
• Suitable for RMK subsea connector protection

2. Protective Dummy Plug for Male Connectors

The primary function of the RMK-5-FSD is to protect compatible male connector interfaces.When an RMK-5-MP male connector is disconnected from its normal female electrical connector, the exposed male contacts and mating surfaces may be affected by seawater, salt deposits, dust, debris, and accidental mechanical contact.The RMK-5-FSD provides a compatible female protective interface for the unused male connector.Key benefits include:

• Protection of exposed male connector contacts
• Reduced exposure to environmental contamination
• Protection against dust and debris
• Reduced risk of mechanical contact damage
• Protection during equipment storage
• Protection during transportation
• Convenient subsea connector maintenance
• Improved connector protection practices

Using a compatible female dummy plug helps maintain the condition of underwater connector interfaces between operations.

3. Compatible RMK-5-MP Male Connector

The RMK-5-FSD is specifically designed to mate with the corresponding RMK-5-MP male in-line connector.The RMK-5-MP is a five-pin male rubber molded electrical connector designed for compatible RMK five-contact underwater cable assemblies.The RMK-5-FSD provides a protective mating interface for this male connector when it is not connected to a functional female cable connector.Key compatibility characteristics include:

• Compatible connector: RMK-5-MP
• Connector family: RMK Rubber Molded
• Connector size: K
• Mating configuration: Five-position
• Dummy connector gender: Female
• Male connector protection: Yes
• Electrical transmission: Not applicable

Mechanical dimensions, contact arrangement, indexing, and mating compatibility should be verified against the approved connector drawings.

4. Special Neoprene Rubber Molded Construction

The RMK-5-FSD features a special molded neoprene rubber body.Neoprene, also known as chloroprene rubber, is widely used in marine electrical connector applications because of its flexibility and suitability for demanding underwater environments.Key characteristics include:

• Special molded neoprene construction
• Flexible rubber body
• Protective connector structure
• Marine environment suitability
• Compact dummy connector design
• Mechanical protection
• Suitable for commercial diving applications
• Designed for subsea connector protection

The molded rubber construction provides a protective structure around the female mating interface.

5. High Hydrostatic Pressure Protection

The SEACON RMK Rubber Molded Connector Series specifies a mated pressure rating of up to 20,000 psi for the RMK-FSD dummy connector.This is approximately 1,379 bar.The pressure-rated design makes the RMK-5-FSD suitable for demanding commercial diving and subsea applications when correctly configured and mated with its compatible male connector.Typical applications include:

• Commercial diving systems
• Surface-supplied diving equipment
• Diver umbilical connections
• Offshore diving operations
• Underwater communication systems
• Subsea electrical equipment
• Marine instrumentation
• Underwater camera systems
• ROV equipment

The published pressure rating applies to the correctly configured and mated connector assembly. It should not be interpreted as an open-face pressure rating.Actual pressure performance depends on the complete mating configuration, sealing arrangement, connector condition, and qualification conditions.

6. Five-Contact RMK Size K Interface

The RMK-5-FSD belongs to the RMK Size K connector family.The RMK series is a larger rubber molded connector configuration compared with the RMG and VMG series.Its five-position female mating interface is designed for the corresponding RMK-5-MP male connector.Key characteristics include:

• RMK Size K configuration
• Five-position female mating interface
• Compatible RMK-5-MP male connector
• Dedicated RMK connector dimensions
• Series-specific mating arrangement
• Suitable for five-contact underwater connector systems

When replacing existing underwater connector accessories, users should verify the connector series, contact configuration, physical dimensions, and mating interface rather than selecting products based on contact count alone.

7. Cable-Free Protective Design

The RMK-5-FSD is a dummy connector rather than a functional electrical cable connector.Unlike the RMK-5-FS female in-line connector, the RMK-5-FSD does not require an external electrical cable.Key characteristics include:

• No external electrical cable
• No cable termination required
• Five-position female protective interface
• Special molded neoprene body
• Compact construction
• Convenient installation and removal
• Suitable for underwater connector maintenance

This distinguishes the RMK-5-FSD from functional RMK electrical connectors.The RMK-5-FS and RMK-5-MP are used for electrical power and signal connections, while the RMK-5-FSD is used for male connector protection.

8. Protection During Equipment Storage

Underwater connectors are frequently disconnected during equipment storage, inspection, transportation, and maintenance.Leaving male connector interfaces exposed may allow dust, salt deposits, foreign particles, and other contaminants to accumulate.The RMK-5-FSD provides a protective accessory for compatible male connectors during periods when the electrical connection is not required.It helps maintain the condition of connector mating surfaces and supports routine subsea equipment maintenance.Typical applications include:

• ROV cable storage
• Diver umbilical storage
• Commercial diving equipment maintenance
• Subsea cable transportation
• Marine electrical equipment storage
• Spare connector protection

9. Protection During Transportation

Marine electrical equipment may experience repeated handling and movement during transportation.Exposed male connector pins can be damaged by accidental contact with tools, surrounding equipment, or packaging materials.The RMK-5-FSD provides a compatible female protective interface during transportation and equipment handling.Its molded rubber construction provides a protective structure around the male mating interface.

10. Designed for Diver Umbilical Communication Systems

The RMK connector family is used in commercial diving communication and electrical equipment.Diver umbilicals connect divers with surface support systems through communication, power, video, and other equipment connections.The RMK-5-FSD protects compatible male connector interfaces when communication cables are disconnected.Typical applications include:

• Commercial diver communication equipment
• Diver helmet communication systems
• Commercial diving umbilicals
• Surface-supplied diving equipment
• Offshore diving support systems
• Underwater communication cable assemblies
• Diving control equipment

11. Protection for ROV and Subsea Electrical Equipment

ROV and subsea equipment frequently use detachable electrical connectors for power, communication, control, and auxiliary systems.The RMK-5-FSD can be used to protect compatible male connector interfaces when external cables or equipment are disconnected.Typical applications include:

• ROV electrical systems
• Subsea power connections
• Underwater camera systems
• Underwater lighting equipment
• Marine monitoring instruments
• Subsea sensor packages
• Oceanographic research equipment
• Offshore electrical systems

12. Protection for Underwater Cameras and Lighting Systems

Underwater cameras and lighting equipment often require electrical connections for power, video, and auxiliary functions.During equipment maintenance and transportation, the external male connector interface may remain disconnected.The RMK-5-FSD provides a protective dummy connection for compatible RMK-5-MP male interfaces.

13. Compatible RMK Connector Accessories

The RMK connector family includes functional electrical connectors, bulkhead connectors, locking sleeves, and protective dummy connectors.Related RMK products include:

• RMK-5-FS Female In-Line Connector
• RMK-5-MP Male In-Line Connector
• RMK-5-FSD Female Dummy Connector
• RMK-5-MPD Male Dummy Connector
• RMK-5-BCL Male Bulkhead Connector
• XSK-5-BCL Male Bulkhead Connector

The RMK-5-FSD is intended for protecting compatible male connector interfaces.The correct dummy connector should always be selected according to the mating connector gender and series.

14. OEM and Project-Specific Connector Solutions

HYSF SUBSEA provides rubber molded underwater connectors, subsea electrical accessories, and customized marine electrical connection solutions.We support commercial diving equipment manufacturers, ROV integrators, offshore engineering contractors, underwater communication equipment suppliers, and subsea system integrators.Our engineering team can assist with connector selection, mating compatibility, contact configuration, pressure requirements, technical drawings, and customized underwater connector solutions.

RMK-5-FSD Technical Specifications

• Brand: HYSF SUBSEA
• Model: RMK-5-FSD
• Connector Series: RMK Rubber Molded
• Connector Size: K
• Product Type: Female Dummy Connector
• Product Category: Underwater Protective Dummy Plug
• Connector Configuration: 5-Position Female
• Number of Contact Positions: 5
• Connector Gender: Female
• Mating Connector: RMK-5-MP
• Compatible Series: RMK Size K
• Connector Body Material: Special Neoprene, Molded
• Construction: Rubber Molded Dummy Connector
• Mated Pressure Rating: Up to 20,000 psi / Approximately 1,379 bar
• Cable Assembly: Not Required
• External Electrical Cable: None
• Electrical Transmission: Not Applicable
• Voltage Rating: Not Applicable to Protective Dummy
• Current Rating: Not Applicable to Protective Dummy
• Number of Conductors: Must Be Specified When Ordering
• Main Function: Protection of Unused Male Connector Interfaces
• Typical Applications: Diver Umbilical Communications, Commercial Diving Equipment, ROV Systems, Subsea Instrumentation, and Marine Electrical Systems

Typical Applications of RMK-5-FSD

1. Commercial Diving Umbilicals

The RMK-5-FSD is suitable for protecting compatible male electrical connector interfaces used in commercial diving umbilical systems.It helps cover unused male connectors during cable disconnection, maintenance, and equipment storage.

2. Diver Communication Systems

Commercial divers rely on communication equipment to maintain contact with surface support teams.The RMK-5-FSD protects compatible male connector interfaces used in diver communication cable systems when they are not connected to functional female connectors.

3. Diving Helmets and Communication Equipment

Commercial diving helmets and communication systems may incorporate specialized electrical connectors.The RMK-5-FSD can protect compatible male RMK connector interfaces when communication cables are disconnected.

4. Surface-Supplied Diving Equipment

Surface-supplied diving systems use electrical connections for communication and other equipment functions.The RMK-5-FSD provides a protective female dummy connector option for compatible male interfaces.

5. Offshore Diving Operations

Offshore diving contractors require connector protection accessories for electrical equipment used in demanding marine environments.The RMK-5-FSD can be included in suitable diving equipment maintenance and spare-part kits.

6. Diver Umbilical Storage

Diving umbilicals may be disconnected and stored between operations.The RMK-5-FSD can protect compatible male connector interfaces against contamination and mechanical damage during storage.

7. ROV Electrical Equipment

ROV systems use multiple underwater electrical connectors for power, communication, and control.The RMK-5-FSD can protect compatible RMK male connector interfaces during equipment maintenance and transportation.

8. Underwater Camera Systems

Underwater camera equipment may incorporate RMK-compatible male electrical connectors.The RMK-5-FSD provides a protective female interface when the camera cable is disconnected.

9. Subsea Monitoring Instruments

Marine monitoring equipment may use male electrical connectors for external cable connections.The RMK-5-FSD can protect compatible male connectors when external equipment is disconnected.

10. Underwater Lighting Equipment

Underwater lighting systems may require protective accessories for unused male electrical interfaces.The RMK-5-FSD can be used where the connector configuration is compatible.

11. Marine Research Equipment

Marine research instruments often require temporary disconnection of electrical cables for maintenance and transportation.The RMK-5-FSD provides a protective solution for compatible male underwater connector interfaces.

12. Offshore Equipment Maintenance

The RMK-5-FSD can be included in maintenance inventories for compatible offshore and subsea electrical equipment.Its protective function helps maintain connector cleanliness and reduce environmental exposure during equipment downtime.

RMK-5-FSD vs RMK-5-MPD vs RMK-5-FS vs RMK-5-MP

The RMK connector family includes functional electrical connectors and protective dummy connectors.

RMK-5-FSD

• Female Dummy Connector
• Five-Position Female Mating Interface
• Mates with RMK-5-MP
• Protects Compatible Male Connector Interfaces
• No External Electrical Cable
• Mated Pressure Rating: Up to 20,000 psi

RMK-5-MPD

• Male Dummy Connector
• Five-Position Male Mating Interface
• Mates with RMK-5-FS and RMK-5-FS-R/A
• Protects Compatible Female Connector Interfaces
• No External Electrical Cable
• Pressure Configuration Depends on Selected Version

RMK-5-FS

• Five-Socket Female In-Line Electrical Connector
• Five Female Socket Contacts
• Integrated Electrical Cable
• Used for Power and Signal Transmission
• Mates with RMK-5-MP

RMK-5-MP

• Five-Pin Male In-Line Electrical Connector
• Five Male Pin Contacts
• Integrated Electrical Cable
• Used for Power and Signal Transmission
• Mates with RMK-5-FS

Selecting the correct dummy connector is essential.Use the RMK-5-FSD to protect compatible male connectors and the RMK-5-MPD to protect compatible female connectors.

Customization and Ordering Options

HYSF SUBSEA provides customized rubber molded underwater connectors and protective dummy connector solutions according to project requirements.Available configuration options include:

• Five-position female dummy configuration
• RMK Size K mating interface
• Compatible RMK-5-MP male connector
• Specified number of contact positions
• Special neoprene molded construction
• Mating compatibility evaluation
• Dimensional inspection
• Hydrostatic pressure testing
• OEM protective connector configurations

Customers should specify the following information when requesting a quotation:

• Required connector model
• Number of contact positions
• Mating male connector model
• Required operating pressure
• Required quantity
• Special project requirements

The number of conductors must be specified when ordering to ensure the correct RMK-FSD configuration.Providing the mating connector model and operating pressure helps ensure the correct dummy connector is selected.

Installation and Maintenance Guidelines

Step 1: Verify Connector Compatibility

Confirm that the connector to be protected is a compatible five-contact RMK male connector, such as RMK-5-MP.

Step 2: Inspect the Male Connector

Inspect the male contacts and mating surfaces for contamination, corrosion, or mechanical damage.

Step 3: Inspect the Dummy Connector

Check the neoprene rubber body and female mating interface for cuts, cracks, deformation, or contamination.

Step 4: Verify Contact Configuration

Confirm that the RMK-5-FSD configuration matches the contact arrangement and indexing of the male connector.

Step 5: Clean the Mating Surfaces

Follow the approved connector cleaning and maintenance procedure.Remove debris and foreign particles from the mating interface.

Step 6: Align the Connector Interfaces

Align the dummy connector with the compatible male interface.Ensure that the contact arrangement and indexing features are correctly positioned.

Step 7: Install the Dummy Connector

Gently install the RMK-5-FSD onto the compatible male connector according to the approved mating procedure.Do not force the connector.

Step 8: Verify the Protective Connection

Verify that the dummy connector is correctly seated and that the protective interface is fully engaged.

Step 9: Check the Mated Assembly

Before subsea deployment, verify that the dummy connector and male connector are correctly configured for the intended operating pressure.

Step 10: Remove Before Normal Electrical Connection

Remove the dummy connector before installing the functional female electrical connector.Inspect the mating interface before returning the equipment to service.Important: Always follow the manufacturer’s approved mating and maintenance procedures. Never force the connector or exceed its qualified pressure rating.

Quality Control and Testing

Depending on the approved HYSF configuration and project requirements, quality-control procedures may include:

• Visual inspection
• Dimensional inspection
• Rubber molding inspection
• Connector interface inspection
• Contact configuration verification
• Mating compatibility testing
• Protective fit inspection
• Surface defect inspection
• Mechanical engagement inspection
• Hydrostatic pressure testing
• Post-pressure inspection
• Final product inspection

Pressure test documentation and dimensional inspection reports can be provided according to agreed project requirements.

Frequently Asked Questions

Q1: What is the RMK-5-FSD connector?

The RMK-5-FSD is a five-position female rubber molded dummy connector designed to protect compatible male underwater electrical connector interfaces.

Q2: Is the RMK-5-FSD an electrical connector?

It is a protective dummy connector rather than a functional electrical cable connector.Its primary purpose is to protect unused male connector interfaces.

Q3: How many contact positions does the RMK-5-FSD have?

The RMK-5-FSD is the five-position female dummy configuration for the RMK Size K connector family.

Q4: Is the RMK-5-FSD male or female?

The RMK-5-FSD is a female dummy connector designed to mate with compatible male connectors.

Q5: Which connector mates with the RMK-5-FSD?

According to the SEACON reference datasheet, the RMK-FSD mates with the RMK-MP male connector.The RMK-5-FSD is therefore the compatible five-position female dummy for the RMK-5-MP.

Q6: What is the pressure rating?

The reference SEACON specification lists a mated pressure rating of up to 20,000 psi, approximately 1,379 bar.

Q7: What material is used?

The reference RMK-FSD configuration uses special molded neoprene rubber.

Q8: Does the RMK-5-FSD include a cable?

No. The RMK-5-FSD is a protective dummy connector and does not require an external electrical cable.

Q9: Can the RMK-5-FSD transmit electrical signals?

No. It is intended for connector protection rather than electrical power or signal transmission.

Q10: Is it suitable for diver umbilical communication systems?

Yes. The RMK-5-FSD can protect compatible male connector interfaces used in diver umbilical communication equipment.

Q11: Can it be used with the RMK-5-MP?

Yes. The RMK-5-FSD is designed to mate with the corresponding RMK-5-MP male in-line connector.

Q12: Does the RMK-5-FSD protect female connectors?

No. The RMK-5-FSD mates with RMK-5-MP male connectors and protects their exposed male interfaces.The RMK-5-MPD is the male dummy connector used to protect compatible female connectors.

Q13: Is the RMK-5-FSD suitable for underwater equipment storage?

Yes. It provides a protective interface for compatible male connectors during equipment storage, transportation, and maintenance.

Q14: Does the number of contacts need to be specified when ordering?

Yes. The SEACON reference documentation specifically instructs customers to specify the number of conductors when ordering RMK dummy connectors.

Q15: Can the RMK-5-FSD be used for high-pressure subsea applications?

The reference mated pressure rating is up to 20,000 psi. The complete mating configuration and operating conditions must meet the applicable pressure qualification requirements.

Q16: Can hydrostatic pressure test reports be supplied?

Hydrostatic pressure testing and corresponding documentation can be arranged according to agreed project requirements.

Why Choose HYSF SUBSEA RMK-5-FSD?

The HYSF SUBSEA RMK-5-FSD 5-Socket Female Rubber Molded Dummy Connector provides a practical protective accessory for commercial diving, diver umbilical communication systems, ROV equipment, and subsea electrical connections.Its principal features include:

• Five-position female dummy configuration
• RMK Size K connector interface
• Special molded neoprene rubber body
• Compatible with RMK-5-MP male connectors
• Up to 20,000 psi mated pressure rating
• Cable-free protective construction
• Protection of exposed male connector interfaces
• Suitable for commercial diving equipment
• Diver umbilical communication applications
• ROV and subsea equipment protection
• Underwater connector storage protection
• Offshore equipment maintenance applications
• OEM connector compatibility support

For commercial diving contractors, offshore engineering companies, underwater communication system manufacturers, ROV integrators, and subsea equipment suppliers, the RMK-5-FSD provides a practical five-position female rubber molded dummy connector solution for protecting unused male electrical interfaces.Contact HYSF SUBSEA for technical drawings, mating compatibility details, pressure specifications, and quotations for the RMK-5-FSD five-socket female rubber molded dummy underwater connector.