HYSF RMG4FSD Underwater Female Dummy Plug – RM Series 4 Contacts Subsea Sealed Protective Cap

Plug Color Configuration Standard matte black Chloroprene rubber body with precision-molded sealing interface for superior underwater visibility and corrosion resistance. Designed to perfectly mate with HYSF RM Series male connectors (RMG4MP / RMG4MPD), the RMG4FSD features a high-contrast black finish optimized for ROV/AUV identification in low-light deep-sea conditions while maintaining full compatibility with the complete HYSF RM Series ecosystem.

Main Parameters

• Depth Rating: 6000 meters
• Mating Cycles: >500
• Temperature Range: -4°C to +60°C
• Electrical Protection: Fully sealed dummy configuration prevents water ingress and protects male pins
• Pressure Resistance: Extreme subsea pressure protection
• IP Rating: IP68 / full underwater submersion protection
• Cable Specification: Not applicable (dummy plug) – pure sealing function Engineered specifically for reliable protection of unused or stored RM Series male connectors during deployment, storage, transport, and maintenance in harsh marine environments.

Material Parameters

• Connector Body: High-performance Chloroprene rubber for exceptional flexibility and watertight sealing
• O-Rings: Nitrile (NBR) for reliable long-term watertight performance
• Nuts & Washers: Stainless steel (optional 316L upgrades available)
• BH Body Option: 316L stainless steel or titanium for maximum corrosion resistance
• Locking Sleeve Compatibility: Premium POM (Polyoxymethylene) All materials are rigorously chosen for extended exposure to saltwater, UV, and high pressure, ensuring zero water ingress and maximum durability in offshore, ROV, AUV, and oceanographic applications.

Dimension & Thread Specifications RMG4FSD Female Dummy Plug:

• Overall Length: 56 mm
• Maximum Diameter: Ø18.5 mm
• Compact, robust design engineered for secure mating with RM Series 4-contact male connectors
• Thread Compatibility: Metric threads (compatible with HYSF standard mounting holes and locking sleeves G-FLS-D / G-MLS-D)
• Dimensions in mm (1 inch = 25.4 mm)

Precision-engineered to HYSF’s exacting standards, the RMG4FSD offers perfect drop-in compatibility with the full RM Series (2-4 contacts) including inline, bulkhead, and high-pressure variants.

underwater dummy plug, HYSF RMG4FSD, subsea female dummy cap, RM Series sealed protective plug, 6000m depth rated dummy connector, ROV AUV connector protection, marine subsea sealing cap, Chloroprene rubber dummy plug, deep sea male pin protector, RMG4MP compatible dummy.

The HYSF RMG4FSD is the ultimate protective solution for your RM Series 4-contact male underwater connectors in offshore oil & gas, renewable energy, scientific research, and underwater robotics applications. Fully compatible with HYSF RMG4MP, RMG4FS, and the entire RM Series lineup. Custom thread lengths, shell materials, and complete connector kits available. Contact HYSF for your subsea connector protection needs.