#20 Female ORB Alum Weld Bung

The #20 Female ORB Aluminum Weld Bung is a precision-engineered weld-on adapter designed for high-pressure hydraulic and fluid systems where reliable AN-standard connections are critical. This aluminum bung accepts a #20 AN female O-ring port (also called an ORB or O-ring boss fitting), making it the ideal solution for custom fuel system fabrication, hydraulic line routing, and specialized automotive applications where permanent mounting is required.

Constructed from aluminum alloy in its natural finish, this weld bung delivers lightweight performance while maintaining the strength necessary to handle system pressures safely. The weld-on design allows technicians to permanently mount the fitting directly onto fuel tanks, manifolds, or custom fabricated reservoirs, eliminating the need for threaded bosses or temporary couplings. At 0.19 lbs and compact dimensions (3.7 × 1.55 × 5.2 inches), it integrates seamlessly into space-constrained installations typical of race car fuel systems, off-road vehicle setups, and marine engine compartments.

This bung is specified for professional fabricators, automotive engineers, and serious enthusiasts building custom hydraulic circuits where AN standard connections provide superior performance and safety margins. The O-ring port design ensures leak-free connections when mated with matching AN female fittings and hoses, eliminating potential fuel or fluid loss under vibration and thermal cycling. Whether you're constructing a race fuel cell, upgrading a vintage restoration, or engineering a specialized industrial system, this aluminum ORB weld bung provides the precision interface required to meet modern fluid system standards.