347-1100-4GSE is a specialized aviation ground support equipment (GSE) component, compliant with AS9100D aerospace quality standards and FAA/EASA ground operation regulations, designed for large commercial aircraft ground power and conditioning operations.

It acts as a ground conditioned air (GCA) hose quick-connect seal adapter, creating a tight, pressure-stable seal between the GCA unit hose and the aircraft's air conditioning inlet. This seal ensures a steady flow of temperature-controlled air into the aircraft's cabin and avionics compartments during ground operations, avoiding air leakage that would cause inconsistent cabin temperature, insufficient avionics cooling, or energy waste.

Made from fuel-resistant, anti-static nitrile rubber and corrosion-resistant aluminum alloy, it operates stably at -40°C to 180°C, and resists abrasion and aviation fuel contamination. Weighing 0.18kg, it allows fast connection and disconnection, a key component for efficient ground aircraft conditioning.