Inverted Flare Plug - 1/ 2-20

The Inverted Flare Plug 1/2-20 is a precision hydraulic and pneumatic fitting designed to seal male inverted flare connections. This hex head plug delivers reliable containment in fluid systems where pressure integrity and leak-free performance are non-negotiable. Steel construction with zinc oxide plating provides corrosion resistance in demanding industrial, mobile equipment, and high-pressure applications where standard plugs cannot tolerate exposure to moisture or chemical environments.

The 1/2-20 thread specification conforms to standard SAE inverted flare port sizing, ensuring compatibility with OEM and aftermarket hydraulic systems. The hex head design allows secure installation and removal using standard wrenches without risk of rounding or stripping. Zinc oxide plating extends service life in outdoor and salt-air environments by preventing rust and surface degradation. The steel body withstands the pressure cycles and thermal stress inherent in hydraulic lines, brake systems, and fuel delivery applications where vibration and temperature fluctuation are constant factors.

This fitting serves technicians, fleet maintenance crews, and equipment operators who need a dependable closure for unused ports on manifolds, junction blocks, and pressure accumulators. Off-road vehicle owners, marine equipment handlers, and industrial maintenance teams rely on this style of plug to prevent fluid contamination and system failure. Sold as a single unit, it provides cost-effective backup stock for repair kits and emergency repairs where a missing or damaged port cap would otherwise compromise system safety and function.

Inverted flare fittings remain the industry standard in automotive brake systems, transmission coolers, and mobile hydraulic equipment because they deliver consistent, vibration-resistant seals without thread sealant compounds. This plug is a direct-fit solution for OEM applications and also serves as a universal replacement for generic 1/2-20 inverted flare ports across manufacturers and equipment generations.