• Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND
  • Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND

Rubber Moulded Bulkhead Pin Connector -RMG-4-BCL-SS ROUND

RMG-4-BCL-SS ROUND Marsh Marine style rubber moulded diving connector (RMG/RMK series), 600 V DC, up to 20,000 psi mated, gold plated contacts per ASTM-B-488, for diver umbilical comms, helmets, cameras and diving systems.
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RMG-4-BCL-SS ROUND — 4-Pin Rubber Moulded Bulkhead Connector

The RMG-4-BCL-SS ROUND is a 4-pin male rubber-moulded bulkhead connector for panel and housing installation on dive bells, dive baskets and diving-spread control vans. The body is made from glass-reinforced epoxy with hard gold-plated copper-alloy contacts, mounts in a circular panel cutout with a jam nut, and mates directly with the RMG/RMK in-line female connector family. IMCA D 035 compliant for commercial offshore diving operations.

RMG-4-BCL-SS ROUND 4 Pin Male Bulkhead IMCA D 035 300 m (30 bar) Marsh Marine Style

Key Design Features

  • Panel feedthrough without extra hardware: standard circular cutout plus jam-nut — no brackets or adapters required.
  • Direct mating with the RMG/RMK in-line family: fixed panel half of the complete diver umbilical connector system.
  • Rubber-moulded body absorbs vibration: reduces stress fatigue at the panel cutout edge compared with rigid-shell bulkheads.
  • Gold-plated contacts: contact resistance < 0.01 Ω, insulation resistance > 100 MΩ (500 V DC).
  • IMCA D 035 compliant: 300 m (30 bar) depth rating, > 500 wet-mate cycles, IP68.
  • Full accessory range: G/K locking sleeves and matching dummy plugs available.

Electrical & Mechanical Specifications

ParameterSpecification
Model numberRMG-4-BCL-SS ROUND
VersionRound-body variant of the RMG-4-BCL-SS 4-pin bulkhead pin connector with stainless-steel hardware
Body materialGlass-reinforced epoxy (rubber-moulded bulkhead)
ContactsCopper alloy, hard gold plated
Rated voltage250 V DC/AC rms (600 V DC class per series catalogue — contact factory)
Rated current10 A per contact
Contact resistance< 0.01 Ω
Insulation resistance> 100 MΩ (500 V DC)
Depth rating300 m (30 bar)
Wet-mate cycles> 500
IP ratingIP68
StandardIMCA D 035 compliant
O-ring materialNBR standard; EPDM / FKM on request
Operating temperature−40 °C to +60 °C
Storage temperature−40 °C to +80 °C
MountingCircular panel cutout with jam-nut retention
Number of contacts4 male pins

Mating & Compatibility

ParameterSpecification
Mates withRMG-4-FS in-line female connector
Dummy connectorRMG-4-FSD-LP dummy connector
Locking sleeveG-FLS-D / G-MLS-D (2–4 pin) or K-FLS-D / K-MLS-D (5–6 pin), as applicable
InterchangeabilityMarsh Marine style — inter-mateable between brands in this RMG/RMK category

Typical Applications

Dive bell electrical panel feedthroughs, dive basket and stage panel bulkheads, topside control van panels, saturation system umbilical handling panels, subsea equipment housing feedthroughs, diver video and comms panel ports, and IMCA-compliant DSV diving spread installations.

Notes for Selection

Mating and maintenance. Inspect contacts and O-rings, apply silicone grease, align and push straight until fully seated, then fit the locking sleeve immediately; carry out an insulation-resistance test before energising. Install dummy plugs before water entry, rinse with fresh water after seawater exposure, store dry and UV-shaded, and replace O-rings every two years or on visible damage. Panel cutout drawings are available on request with the model number.

Custom configurations available Thread lengths, harness pigtails, stainless-steel and round-body versions, and factory-terminated cable assemblies can be specified to order. Panel cutout drawings on request. Send us your requirement for a quotation.