Weld Bung 1/2in NPT Female - Aluminum

The Weld Bung 1/2in NPT Female - Aluminum from JOES RACING PRODUCTS is a precision fluid management fitting designed for serious boaters and marine technicians who demand reliable, corrosion-resistant connections. Whether you're fabricating a custom fuel, coolant, or hydraulic system on your vessel, this weld-in bung provides a permanent, sealed entry point that won't fail under the vibration and saltwater exposure that comes with years on the water. Built for applications where temporary fittings or standard couplings simply won't hold up, this aluminum bung is the choice of professional boat builders and restoration specialists.

Constructed from lightweight yet durable aluminum, the Weld Bung features a 1/2 inch NPT (National Pipe Thread) female connection that accepts standard hydraulic and fluid system hoses with proven thread engagement. The weld-in design eliminates the need for threaded mounting holes—you simply position the bung on your tank, hull, or manifold and weld it in place for a leak-proof, permanent installation that handles high-pressure cycles and thermal cycling without loosening. The natural aluminum finish resists corrosion better than steel in marine environments, and the compact 3 x 0.75 x 3.6 inch footprint fits tight fabrication spaces without compromising structural integrity. At just 0.05 lbs, it adds negligible weight while delivering industrial-grade reliability.

Boat builders, marine engineers, and DIY enthusiasts restoring classic vessels or building custom fuel and cooling systems trust this fitting for fuel tanks, bilge systems, hydraulic manifolds, and ballast tank installations. Installation requires basic welding capability and familiarity with NPT thread standards; once welded, the bung provides a permanent connection that outlasts the vessel in many cases. Compatible with any fluid system operating at pressures and temperatures within marine industry standards, this JOES RACING PRODUCTS bung is a critical component for custom fabrication work where factory fittings don't exist or won't fit your design.