Polished Alum Fill Cap w/ Alum Welld Bung 2.75i

The Polished Alum Fill Cap w/ Alum Welld Bung 2.75in is a complete bung and cap kit designed for secure fluid containment and access on 2.75-inch openings. This aluminum assembly serves industrial, automotive, and equipment maintenance applications where reliable sealing and easy refueling or fluid transfer is essential. The weld-on construction ensures permanent, leak-free installation on tanks, reservoirs, and custom vessels that demand durability and professional-grade performance.

Constructed entirely from aluminum, both the welded bung and threaded cap offer corrosion resistance and lightweight functionality ideal for fuel systems, water storage, and hydraulic reservoirs. The polished finish not only enhances aesthetics but also provides a protective oxide layer that resists oxidation and environmental degradation. The threaded aluminum cap design allows tool-free removal for quick access, while the weld-on bung provides structural integrity and prevents vibration-related loosening—critical for mobile or high-vibration applications. At 0.41 lbs and compact dimensions of 3.8 x 1.5 x 5.15 inches, this kit integrates seamlessly into space-constrained installations.

Technicians, fabricators, and equipment specialists benefit most from this assembly when retrofitting or maintaining aluminum tanks and reservoirs. The 2.75-inch opening specification suits a wide range of standard tank configurations used in agriculture, construction equipment, RVs, and custom automotive builds. Installation requires welding the bung directly to the tank opening, making it ideal for permanent installations where longevity and sealed performance are non-negotiable. This kit eliminates the need for sourcing matching components separately, delivering a complete solution for professional-grade fluid management systems.