Ensure a permanent, leak-proof seal in your vessel's plumbing systems with this premium 1-1/4" Cast Bronze Pipe Cap. Engineered for rugged marine, industrial, and commercial fluid applications, this female-threaded cap securely plugs unutilized pipe ends, thru-hulls, or manifold ports.

Cast from high-copper marine bronze, this fitting offers superior resistance to dezincification, stress corrosion cracking, and biofouling. Unlike brass fittings which can weaken and fail when submerged, bronze remains structurally sound for decades in raw saltwater environments, making it the industry standard for below-the-waterline plumbing.

Key Features

• Maximum Corrosion Shielding: Cast from premium marine-grade bronze to prevent dezincification and galvanic corrosion, making it perfect for direct exposure to raw saltwater, bilge fluids, and brine.

• Precision-Cut 1-1/4" NPT Threads: CNC-machined female National Pipe Taper (NPT) threads ensure a tight, deep-meshing, interference fit when paired with male threaded pipes or fittings.

• Anti-Fouling Alloy: The natural high-copper composition inherently resists marine growth and barnacle attachment, keeping vital plumbing lines clear and accessible.

• Heavy-Wall Casting: Robust wall thickness handles high structural vibration and fluid pressure spikes without warping, cracking, or stripping threads.

Specifications