Sea-Dog Line 520740-1 Thru-Hull Fitting 5/8 Inch Polypropylene

The Sea-Dog Line 520740-1 is a 5/8-inch thru-hull fitting designed for above-waterline drainage applications on boats and marine vessels. Constructed of injection-molded polypropylene, this fitting is ideal for salt water use as it is completely impervious to electrolysis and corrosion, providing long-lasting durability in harsh marine environments.

Key Features:

• 5/8-inch hose barb size for secure hose connection
• Injection-molded polypropylene construction resists corrosion and electrolysis
• Designed for above-waterline drainage applications
• Allows water to pass in or out of the vessel safely
• Non-metallic material eliminates galvanic corrosion concerns
• Suitable for saltwater and freshwater marine use

This thru-hull fitting provides a reliable connection point for drainage hoses, cockpit drains, livewell systems, and other above-waterline plumbing applications. The polypropylene material offers excellent chemical resistance and UV stability, making it a dependable choice for marine installations where metal fittings would be prone to corrosion failure.