RMG-3-FSD 3-Socket Female Rubber Molded Dummy Underwater Connector

Product Overview

The HYSF SUBSEA RMG-3-FSD 3-Socket Female Rubber Molded Dummy Underwater Connector is a protective underwater connector accessory designed for commercial diving operations, diver communication systems, subsea electrical equipment, and marine applications.Featuring a three-socket female mating configuration and a special molded neoprene rubber body, the RMG-3-FSD is designed to protect compatible male underwater connector interfaces when the electrical connection is not in use.As part of the RMG Rubber Molded Connector Series, the RMG-3-FSD provides a protective dummy plug solution for RMG three-contact male connectors and compatible XSG male bulkhead connectors.The RMG-3-FSD is specifically designed to mate with the RMG-3-MP male in-line connector and compatible XSG-3-BCL male bulkhead connector. It provides a protective mating interface for unused male connectors during equipment storage, transportation, maintenance, and subsea operations.Unlike a functional electrical cable connector, the RMG-3-FSD is a protective dummy connector without an external electrical cable. Its primary function is to protect exposed male connector interfaces against environmental contamination, foreign particles, and mechanical damage.The reference design uses special molded neoprene rubber, providing a flexible protective construction suitable for commercial diving and marine environments.The RMG-3-FSD is available in different pressure configurations. The reference specifications indicate a mated pressure capability of up to 20,000 psi when the required male pin contacts are fitted, while configurations without the required male pin contacts are rated below 4,000 psi.The correct pressure configuration should be selected according to the intended operating depth, mating connector, and complete assembly requirements.The RMG-3-FSD is particularly suitable for commercial diving communication systems, diver umbilical cable assemblies, underwater cameras, marine instrumentation, and offshore 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 cable assemblies for commercial diving equipment manufacturers, offshore contractors, and underwater system integrators.

Key Features and Benefits

1. Three-Socket Female Dummy Configuration

The RMG-3-FSD features a three-socket female mating configuration designed for compatible RMG three-pin male connectors.Its female dummy interface allows it to cover and protect the male connector mating surface when the functional electrical cable connector is disconnected.The three-contact configuration corresponds to the RMG-3 connector family.The reference RMG-3 electrical contact arrangement includes:

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

The dummy connector provides a compatible protective interface for the corresponding male connector arrangement.Key characteristics include:

• Three-socket female configuration
• RMG rubber molded connector interface
• Compatible three-pin male mating arrangement
• Protective dummy connector design
• Cable-free construction
• Suitable for RMG connector protection
• Available in different pressure configurations

2. Protective Dummy Plug for Male Connectors

The primary function of the RMG-3-FSD is to protect exposed male connector interfaces.When an RMG male connector is disconnected from its normal female cable connector, its mating interface may be exposed to seawater, dust, debris, and mechanical damage.The RMG-3-FSD provides a compatible female protective interface for the unused male connector.Key benefits include:

• Protection of exposed male connector pins
• 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 electrical connector interfaces between operations.

3. Compatible RMG and XSG Male Connector Interfaces

The RMG-3-FSD is designed around the RMG Rubber Molded Connector mating interface.According to the SEACON reference specifications, RMG-FSD dummy connectors are compatible with RMG-MP male in-line connectors and selected male bulkhead connector configurations.Reference compatible connectors include:

• RMG-3-MP Male In-Line Connector
• RMG-3-BCL Male Bulkhead Connector
• XSG-3-BCL Male Bulkhead Connector
• Compatible XSG-3-PBC Configurations
• Compatible XSG-3-PBCL Configurations
• Compatible XSG-3-PBCLM Configurations

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

4. Special Neoprene Rubber Molded Construction

The RMG-3-FSD features a special molded neoprene rubber body.Neoprene rubber is widely used in marine electrical connector applications because of its flexibility and suitability for underwater environments.Key characteristics include:

• Special molded neoprene construction
• Flexible rubber body
• Mechanical protection
• Marine environment suitability
• Compact protective connector design
• 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 RMG-3-FSD reference configuration supports different mated pressure conditions depending on the selected dummy configuration.The published reference specifications include:

• High-pressure configuration: Up to 20,000 psi
• Low-pressure configuration without the required male pin contacts: Below 4,000 psi

The high-pressure configuration requires the appropriate male pin contacts according to the manufacturer’s specifications.The pressure-rated design makes the RMG-3-FSD suitable for demanding commercial diving and subsea applications when correctly configured and mated with compatible pressure-rated connectors.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

The pressure rating applies to the correctly configured and mated assembly. Actual operating pressure must also consider the mating connector, cable assembly, sealing arrangement, and qualification conditions.

6. Low-Pressure and High-Pressure Configurations

The RMG-3-FSD reference series includes low-pressure and high-pressure dummy connector configurations.The correct version should be selected according to the application requirements.Low-Pressure Configuration:

• Pressure Classification: Low Pressure
• Reference Pressure: Below 4,000 psi
• Male Pin Contacts: Not Required
• Main Function: Male Connector Protection
• Connector Body: Special Molded Neoprene

High-Pressure Configuration:

• Pressure Classification: High Pressure
• Reference Pressure: Up to 20,000 psi
• Male Pin Contacts: Required
• Main Function: High-Pressure Male Connector Protection
• Connector Body: Special Molded Neoprene

The exact product suffix and contact configuration should be confirmed when ordering.

7. Three-Contact Mating Interface

The RMG-3-FSD is designed for the three-contact RMG male connector family.The corresponding RMG-3-MP male connector features three electrical contact positions:

• One #10 contact
• Two #14 contacts

The female dummy configuration is designed to match the corresponding male connector interface.This three-contact arrangement makes the RMG-3-FSD suitable for compatible RMG three-contact connector systems.

8. Cable-Free Protective Design

The RMG-3-FSD is a dummy connector rather than a functional electrical cable connector.Unlike the RMG-3-FS female in-line connector, the RMG-3-FSD does not require an external electrical cable.Key characteristics include:

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

This distinguishes the RMG-3-FSD from the RMG-3-FS functional female electrical connector.

9. 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 RMG-3-FSD provides a protective accessory for compatible male connectors during periods when the electrical connection is not required.

10. Protection During Transportation

Marine electrical equipment may experience repeated handling and movement during transportation.Exposed connector pins can be damaged by accidental contact with tools, surrounding equipment, or packaging materials.The RMG-3-FSD provides a compatible female protective interface during transportation and equipment handling.

11. Designed for Diver Umbilical Communication Systems

The RMG connector family is widely associated with commercial diving communication equipment.Diver umbilicals connect divers with surface support systems through communication, electrical, and other service connections.The RMG-3-FSD protects compatible male connector interfaces when communication cables are disconnected.Typical applications include:

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

12. Protection for Underwater Electrical Equipment

The RMG-3-FSD can be used to protect compatible male connectors installed on underwater instruments, cameras, lighting equipment, and marine electronic systems.Its protective function helps reduce unnecessary exposure of unused connector interfaces.Typical applications include:

• Underwater camera systems
• Underwater lighting equipment
• Subsea monitoring instruments
• Marine research equipment
• ROV electrical systems
• Commercial diving equipment
• Offshore instrumentation

13. Compatible Locking Sleeve

The reference RMG-FSD product configuration supports a compatible female locking sleeve.The G-FLS-D Delrin female locking sleeve is listed as an associated accessory for the RMG-3-FSD.Key benefits include:

• Compatible female locking sleeve
• Additional mechanical retention
• Secure connector engagement
• Convenient installation
• Suitable for compatible RMG connector assemblies

The appropriate locking sleeve should be selected according to the approved connector configuration.

14. OEM and Project-Specific Connector Solutions

HYSF SUBSEA provides rubber molded underwater connectors, subsea electrical accessories, and customized marine cable assemblies.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, pressure configuration, mating compatibility, technical drawings, and customized underwater electrical connection solutions.

RMG-3-FSD Technical Specifications

• Brand: HYSF SUBSEA
• Model: RMG-3-FSD
• Connector Series: RMG Rubber Molded
• Product Type: Female Dummy Connector
• Product Category: Underwater Protective Dummy Plug
• Connector Configuration: 3-Socket Female
• Number of Contact Positions: 3
• Contact Gender: Female Socket Interface
• Reference Contact Arrangement: 1 × #10 and 2 × #14
• Connector Function: Protective Dummy
• Mating Connector: RMG-3-MP
• Additional Compatible Connector: XSG-3-BCL
• Connector Body Material: Special Molded Neoprene
• Locking Sleeve: G-FLS-D Delrin
• High-Pressure Reference Rating: Up to 20,000 psi / Approximately 1,379 bar
• High-Pressure Contact Requirement: Male Pin Contacts Required
• Low-Pressure Reference Rating: Below 4,000 psi
• Low-Pressure Contact Requirement: Male Pin Contacts Not Required
• 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
• Main Function: Protection of Unused Male Connector Interfaces
• Typical Applications: Diver Umbilical Communications, Commercial Diving Equipment, Subsea Instrumentation, and Marine Electrical Systems

Typical Applications of RMG-3-FSD

1. Diver Umbilical Communication Systems

The RMG-3-FSD is suitable for protecting compatible male electrical connector interfaces used in commercial diver communication systems.It helps cover unused connector interfaces during cable disconnection, maintenance, and equipment storage.

2. Commercial Diving Helmets

Commercial diving helmets may incorporate RMG-compatible electrical connectors for communication and auxiliary equipment.The RMG-3-FSD can protect compatible male connector interfaces when communication cables are disconnected.

3. Surface-Supplied Diving Equipment

Surface-supplied diving systems use underwater electrical connections for communication and other equipment functions.The RMG-3-FSD provides a protective female dummy connector option for compatible male interfaces.

4. Offshore Diving Operations

Offshore diving contractors require connector protection accessories for electrical equipment used in demanding marine environments.The RMG-3-FSD can be included in suitable diving equipment maintenance and spare-part kits.

5. Diver Umbilical Storage

Diving umbilicals may be disconnected and stored between operations.The RMG-3-FSD can protect compatible male connector interfaces against contamination and mechanical damage during storage.

6. Underwater Camera Systems

Underwater camera equipment may incorporate RMG-compatible male electrical connectors.The RMG-3-FSD provides a protective female interface when the camera cable is disconnected.

7. Subsea Monitoring Instruments

Marine monitoring equipment may use male electrical connectors for external cable connections.The RMG-3-FSD can protect compatible male connectors when external equipment is disconnected.

8. Underwater Lighting Equipment

Underwater lighting systems may require protective accessories for unused male electrical interfaces.The RMG-3-FSD can be used where the connector configuration is compatible.

9. Marine Research Equipment

Marine research instruments often require temporary disconnection of electrical cables for maintenance and transportation.The RMG-3-FSD provides a protective solution for compatible male underwater connector interfaces.

10. Offshore Equipment Maintenance

The RMG-3-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.

RMG-3-FSD vs RMG-3-MPD vs RMG-3-FS

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

RMG-3-FSD

• Female Dummy Connector
• Three-Socket Female Protective Interface
• Protects Male Connector Interfaces
• No External Electrical Cable
• Compatible with RMG-3-MP and XSG-3-BCL
• High-Pressure and Low-Pressure Configurations

RMG-3-MPD

• Male Dummy Connector
• Three-Pin Male Protective Interface
• Protects Female Connector Interfaces
• No External Electrical Cable
• Compatible with RMG-3-FS
• Available in Different Pressure Configurations

RMG-3-FS

• Female In-Line Electrical Connector
• Three Female Socket Contacts
• Integrated Electrical Cable
• Used for Power and Signal Transmission
• Compatible with RMG-3-MP

Selecting the correct dummy connector is essential.Use the RMG-3-FSD to protect compatible male connectors and the RMG-3-MPD to protect compatible female connectors.

Customization Options

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

• Three-socket female dummy configuration
• Compatible RMG three-contact mating interface
• Low-pressure dummy configuration
• High-pressure dummy configuration
• Required contact configuration for high-pressure applications
• Special neoprene molded construction
• Compatible G-FLS-D female locking sleeve
• Mating compatibility evaluation
• Dimensional inspection
• Hydrostatic pressure testing
• OEM protective connector configurations

Customers can provide connector drawings, required operating pressure, mating connector model, and installation requirements for engineering evaluation.

Installation and Maintenance Guidelines

Step 1: Verify Connector Compatibility

Confirm that the connector to be protected is a compatible three-contact RMG male connector, such as RMG-3-MP, or an approved XSG-3-BCL interface.

Step 2: Select the Correct Pressure Configuration

Confirm whether the application requires the low-pressure or high-pressure dummy configuration.For high-pressure applications, ensure that the required male pin contacts are installed according to the approved product configuration.

Step 3: Disconnect Electrical Power

Ensure that the equipment is electrically isolated according to the approved maintenance procedure before installing or removing the protective dummy.

Step 4: Inspect the Male Connector

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

Step 5: Inspect the Dummy Connector

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

Step 6: Clean the Mating Surfaces

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

Step 7: 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 8: Install the Dummy Connector

Gently install the RMG-3-FSD onto the compatible male connector according to the approved mating procedure.Do not force the connector.

Step 9: Secure the Assembly

Install the compatible G-FLS-D female locking sleeve where required by the selected configuration.

Step 10: Verify the Protective Connection

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

Step 11: 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. Do not use a low-pressure dummy configuration beyond its qualified pressure range.

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 arrangement verification
• Mating compatibility testing
• Protective fit inspection
• Surface defect inspection
• Mechanical engagement inspection
• Locking sleeve 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 RMG-3-FSD connector?

The RMG-3-FSD is a three-socket female rubber molded dummy connector designed to protect compatible male underwater electrical connector interfaces.

Q2: Is the RMG-3-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 sockets does the RMG-3-FSD have?

The RMG-3-FSD features a three-socket female mating configuration.

Q4: Is the RMG-3-FSD male or female?

The RMG-3-FSD is a female dummy connector designed to mate with compatible male connectors.

Q5: Which connectors are compatible with the RMG-3-FSD?

The RMG-3-FSD is designed to mate with the RMG-3-MP male in-line connector and compatible XSG-3-BCL male bulkhead connector configurations.

Q6: What is the pressure rating?

The reference pressure specification is up to 20,000 psi when the required male pin contacts are fitted.Configurations without the required male pin contacts are rated below 4,000 psi.

Q7: What material is used?

The reference RMG-3-FSD configuration uses special molded neoprene rubber.

Q8: Does the RMG-3-FSD include a cable?

No. The RMG-3-FSD is a protective dummy connector and does not require an external electrical cable.

Q9: Can the RMG-3-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 RMG-3-FSD can protect compatible male connector interfaces used in diver umbilical communication equipment.

Q11: Can it be used with the RMG-3-MP?

Yes. The RMG-3-FSD is designed to mate with the compatible RMG-3-MP male in-line connector.

Q12: Can it protect male bulkhead connectors?

Yes. It is compatible with selected male bulkhead configurations, including XSG-3-BCL, subject to mechanical and pressure compatibility.

Q13: What is the difference between RMG-3-FSD and RMG-3-MPD?

The RMG-3-FSD is a female dummy that protects male connectors, while the RMG-3-MPD is a male dummy that protects female connectors.

Q14: Is a locking sleeve available?

Yes. The G-FLS-D Delrin female locking sleeve is listed as an associated accessory for the RMG-3-FSD.

Q15: Can it be used for underwater equipment storage?

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

Q16: Can HYSF SUBSEA supply different pressure versions?

HYSF SUBSEA can evaluate the required pressure configuration according to the project requirements and approved product design.

Q17: Are hydrostatic pressure test reports available?

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

Why Choose HYSF SUBSEA RMG-3-FSD?

The HYSF SUBSEA RMG-3-FSD 3-Socket Female Rubber Molded Dummy Connector provides a practical protective accessory for commercial diving, diver umbilical communication systems, underwater equipment, and subsea electrical connections.Its principal features include:

• Three-socket female dummy configuration
• RMG rubber molded connector interface
• Special molded neoprene rubber body
• Compatible with RMG-3-MP male connectors
• Compatible with XSG-3-BCL male bulkhead connectors
• High-pressure configuration up to 20,000 psi
• Low-pressure configuration below 4,000 psi
• Required male pin contacts for high-pressure configuration
• Cable-free protective construction
• Compatible G-FLS-D female locking sleeve
• Protection of exposed male connector interfaces
• Suitable for commercial diving equipment
• Diver umbilical communication applications
• Underwater connector storage protection
• Offshore equipment maintenance applications
• OEM connector compatibility support

For commercial diving contractors, offshore engineering companies, underwater communication system manufacturers, and subsea equipment integrators, the RMG-3-FSD provides a practical three-socket female rubber molded dummy connector solution for protecting unused male electrical interfaces.Contact HYSF SUBSEA for technical drawings, mating compatibility details, pressure configuration selection, and quotations for the RMG-3-FSD three-socket female rubber molded dummy underwater connector.