Marinco 500R 50A Threaded Locking Sealing Ring for Shore Power Inlets

The Marinco 500R is a 50-amp threaded locking sealing ring designed to provide maximum moisture protection at the connection point between a shore power cordset and a marine vessel's shore power inlet. Built from durable black Lexan® polycarbonate, this replacement ring is engineered to withstand the harsh conditions of the marine environment.

The 500R threads directly onto the female connector of a 50-amp shore power cordset, creating a weatherproof, watertight seal when connected to the vessel's inlet. It is also compatible for use when combining a 30A EEL cordset with another cordset. Compatible with all Marinco 50-amp inlets — both new and legacy threaded models — and designed to work with most other manufacturers' standard 50-amp inlets.

Key Features:

• Provides maximum moisture and weatherproof protection for 50-amp shore power connections
• Threads onto the female connector of a 50A shore power cordset to seal against the vessel's inlet
• Compatible with all Marinco 50-amp inlets (new and legacy threaded)
• Also designed for use when combining a 30A EEL cordset with another cordset
• Constructed from rugged black Lexan® polycarbonate for long-lasting marine durability
• RoHS Compliant (Restriction of Hazardous Substances Directive)
• Weatherproof boots and sealing collars sold separately

The Marinco 500R is the standard replacement sealing ring for 50-amp shore power systems, ensuring a secure, weathertight connection every time you plug in. Five-year warranty.