RMG/RMK Series

Description
PDF
Downloads

RMG/RMK Series — Marsh Marine Style Rubber Moulded Diving Connectors

The RMG/RMK Series is a family of Marsh Marine style rubber-moulded subsea connectors for commercial diving. Special-neoprene bodies are moulded directly onto SOOW pigtails, with copper-alloy contacts hard gold plated per ASTM-B-488, rated 600 V DC and up to 20,000 psi mated with high-pressure locking sleeves. The range covers 1–6 contact in-line pairs (RMG 2–4, RMK 5–6), glass-reinforced-epoxy bulkheads (XSG/XSK-BCL), G/K locking sleeves, HP/LP dummy plugs, hi-use helmet connectors, Y-splices, OEM assemblies and E/O cords. Marsh Marine style faces are inter-mateable between brands in this category.

RMG/RMK Series Marsh Marine Style 600 V DC Up to 20,000 psi Mated 1–6 Contacts Diver Umbilical Comms

Series Specifications

Parameter	Specification
Body material	Special neoprene rubber, moulded
Contacts	Copper alloy / brass, hard gold plated per ASTM-B-488
Voltage rating	600 V DC (contact factory for higher voltage requirements)
Pressure rating, mated	Up to 20,000 psi with high-pressure locking sleeve (approx. 13,000 m); 4,000 psi with low-pressure sleeve
Visual index	In-line with contact #1
Applications	Diver umbilical comms, helmets and masks, underwater cameras, lighting and instrumentation, ROV and defence systems, oceanographic equipment, ocean bottom cable and seismic systems, slip ring assemblies

Family Overview

Model	Description / Cable
RMG-2-MP / RMG-2-FS	In-line 2-contact pair (diver umbilical comms) — 18/2 AWG SOOW
RMG-3-MP / RMG-3-FS	In-line 3-contact pair — 18/3 AWG SOOW
RMG-4-MP / RMG-4-FS	In-line 4-contact pair (Kirby Morgan helmets / masks) — 18/4 AWG SJOOW
RMK-5-MP / RMK-5-FS	In-line 5-contact pair — 18/5 AWG SOOW
RMK-6-MP / RMK-6-FS	In-line 6-contact pair — 18/6 AWG SOOW
G-FLS-D / G-MLS-D	Locking sleeves, 2/3/4-contact (Delrin; SS = -S; HP/LP)
K-FLS-D / K-MLS-D	Locking sleeves, 5/6-contact (Delrin; SS = -S; HP/LP)
XSG-1/2/3/4/5/6-BCL	Bulkhead connectors, 1–6 pin male, glass-reinforced epoxy
RMG-4-BCL-SS (-ROUND)	Bulkhead pin connector, 4 pin, stainless hardware
XSK-5-BCL-SC	Bulkhead connector, 5 pin male, round body
RMG-x-FSD / RMG-x-MPD	Dummy connectors, 2–5 contact (HP / LP)
HI-USE-2M2F (+SLEEVE)	Hi-Use diver helmet connector, 2 pins + 2 sockets
TERM-Y	Termination Y-splice: SCIL8M to MCIL3F + RMG3F
OEM-DIVING	Custom OEM underwater connectors and cables
EO-CABLE	E/O cable, wet E/O connector, E/O cord

Mechanical Dimensions (in-line)

Parameter	Specification
Overall length (male plug)	2.6 in (66 mm), excluding pigtail
Overall length (female, sleeve engaged)	2.9 in (74 mm); rear section 1.13 in (29 mm)
Mating face diameter	0.75 in (19 mm)
Right-angle female option	RMG FS R/A, 2.06 in (52 mm) height

How to Select

Parameter	Specification
2/3/4-contact in-line pair	RMG-2/3/4-MP + RMG-2/3/4-FS (18/x AWG SOOW pigtail)
5/6-contact in-line pair	RMK-5/6-MP + RMK-5/6-FS
Panel bulkhead 1–6 pin	XSG-1/2/3/4/5/6-BCL; round-body XSK-5-BCL-SC and RMG-4-BCL-SS ROUND
Locking sleeves	G-FLS-D / G-MLS-D for 2–4 contact; K-FLS-D / K-MLS-D for 5–6 contact; -S for stainless; HP/LP by depth
Dummy plugs	RMG-2/3/4-FSD / -MPD and RMK-5-FSD / -MPD, HP or LP
Diver helmet combination	HI-USE 2 pins + 2 sockets, with potting sleeve option
Signal distribution	TERM-Y splice: SCIL8M to MCIL3F + RMG3F
Custom systems	OEM connectors and cables, E/O cords — contact sales

Typical Applications

Commercial diver umbilical communications, Kirby Morgan style helmets and masks, bell and saturation diving systems, dive bell / basket panel feedthroughs, underwater cameras, lighting and instrumentation, hot-water suit umbilicals, ROV and defence systems, and IMCA-compliant DSV diving spreads.

Custom configurations available Contact counts, cable types and lengths, right-angle versions, Gripper-style ruggedised bodies, stainless hardware and factory-terminated assemblies can be specified to order. Send us your drawing or mating requirement for a quotation.

Diving-Connector-RMGRMK_www_uwconn_com.pdf View / Download PDF

Diving-Connector-RMGRMK_www_uwconn_com.pdf

RV POWER GROUP is a professional manufacturer and system integrator focusing on interconnection products for deep-sea, underwater and diving equipment, with over 20 years of R&D and manufacturing experience.

About Us

Overview: Products; Applications; Services; Resources; News; About us; Contact Us

Contact Us: [email protected]; +8618501648956; www.uwconn.com; Building 1, No. 5601 Yanqian Road, Fengxian District, Shanghai China

Product Classification: Micro Circular Underwater Connector

Subsea Circular Connector

Underwater Ethernet Series

Subsea Coaxial Connectors

Subsea Photoelectric Hybrid Connectors

55 Series Underwater Connectors

Subsea Power Connectors

Subsea Splitters & Y-Connectors

Subsea Low Profile Connectors

Subsea Metal Shell Connectors

Subsea Connector Accessories

Diving Connector-RMG/RMK

Follow Us

Copyright © 2026 RV POWER GROUP LIMITED All Rights Reserved.
SubConn®, Seacon®, and Burton® are registered trademarks of their respective owners. Our products are compatible alternatives, not original brand parts.

Description

PDF

Downloads