Drain Plugs, Tubes & Accessories

Everything You Need to Keep Water Where It Belongs

Whether you're hauling out for the season, draining a livewell, or maintaining your RV plumbing system, drain plugs, tubes, and accessories are some of the most critical — and most overlooked — components aboard any vessel or recreational vehicle. A failed or missing drain plug can mean a flooded bilge, a swamped hull, or costly water damage. Getting the right hardware for the job is essential to keeping your investment dry and your time on the water trouble-free.

What's in This Category?

This category covers a broad range of plumbing hardware designed to control water drainage in marine and RV applications. Key product types include:

• Garboard drain plugs — installed at the lowest point of a hull to drain bilge water when the boat is out of the water. Available in nylon, brass, bronze, and stainless steel.
• Drain tubes — rigid or flexible conduits that channel water from cockpit scuppers, livewells, baitwells, or deck drains overboard.
• Baitwell and deck plugs — smaller plugs designed for baitwells, livewell sumps, and deck recesses to retain or release water on demand.
• Flanging tools and installation accessories — specialty tools used to properly seat and seal drain tubes in fiberglass or aluminum hulls.
• Replacement plugs and O-rings — wear items that should be inspected and replaced regularly to maintain a watertight seal.

For RV owners, drain accessories extend to fresh-water and gray-water system fittings, ensuring clean and reliable water management throughout the vehicle.

What to Consider When Shopping

Material matters more than most boaters realize. Nylon plugs are lightweight and corrosion-resistant, making them a popular choice for freshwater use, while bronze and stainless steel plugs are better suited to saltwater environments where long-term durability is paramount. Always match thread size and plug diameter to your existing drain fitting — an improper fit can compromise the watertight seal. For garboard drains especially, look for designs that incorporate a recessed base or O-ring groove to trap sealant and prevent leaks.

Top Brands in Drain Plugs, Tubes & Accessories

Flow Rite is the standout performer in this category, offering innovative battery watering and fluid management solutions that have earned a loyal following among serious boaters and RV enthusiasts alike. Their focused engineering approach means their drain and fluid-management products are purpose-built for reliability in demanding marine environments.

Moeller is a long-established name in marine plumbing, offering a comprehensive lineup that spans air chamber plugs, automatic flapper drain plug sets, deck and baitwell plugs, drain tubes, and flanging tools — making them a true one-stop solution for boat plumbing projects large and small.

Sea-Dog Line brings decades of marine hardware expertise to this category, with garboard drains, nylon and brass drain plugs, captive drain assemblies, and drain tube installation tools. Their nylon garboard plug features a molded-in recess in the base to trap sealant and deliver a more reliable watertight seal — a detail that reflects the brand's attention to practical design.