The Carrier 99CC409372 Flare Cap is a critical component for technicians performing system pressure tests or sealing off unused ports in HVACR refrigeration circuits. Specifically engineered for a leak-proof seal, this brass flare cap features precision-machined threads and a 45-degree seating surface to ensure metal-to-metal contact with SAE flare fittings. As a genuine OEM Carrier replacement part, it is designed to withstand the high vibration and pressure cycles typical of R-410A refrigerant systems, providing a more reliable barrier than generic alternatives. This industrial-grade refrigerant cap is vital for maintaining system integrity during AC maintenance or long-term equipment storage. By utilizing high-tensile brass, it resists mechanical deformation and corrosion, even in demanding rooftop or coastal environmental conditions. This part is a staple for HVAC contractors looking to prevent moisture ingress and refrigerant loss in residential and commercial split systems.

• Ensures a high-pressure seal on standard HVAC flare ports to prevent refrigerant leaks.
• Manufactured from heavy-duty brass to maintain structural integrity under repeat tightening and vibration.
• Compatible with a wide range of Carrier HVAC systems and standard SAE flare connections.
• Essential for system evacuation and pressure testing during new installations or repairs.
• Precision-formed 45-degree flare face provides a superior metal-to-metal seal without the need for additional washers.

Is this flare cap compatible with R-410A systems?
Yes, the robust brass construction of the 99CC409372 is rated for the high operating pressures associated with modern R-410A HVAC units and refrigeration cycles.

Does this part require a gasket or thread sealant?
No, this is a mechanical flare fitting that seals via the flared mating surfaces. To ensure the best leak-proof connection, apply a drop of compatible refrigeration oil to the flare face before torquing to specification.

Can this be used to cap off copper tubing?
This cap is designed to screw onto a male flare fitting. If capping bare copper tubing, the tube must first be flared to the correct angle and used with a flare nut to provide a matching male seat for this cap.

Item is Non Cancelable / Non Returnable

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.