JB N5-5 5/16" SAE Fitting Cap

The JB N5-5 5/16" SAE Flare Fitting Cap is a critical component for technicians requiring a reliable, leak-proof seal in high-pressure refrigeration and HVAC systems. Manufactured in Aurora, Illinois, this heavy-duty brass fitting is machined from premium C360/C370 American-made brass, ensuring high tensile strength and superior corrosion resistance compared to thin-walled imports. Designed to meet SAE J513, ASA, and ASME standards, the N5-5 provides a robust metal-to-metal seal for 5/16" flare connections, common in specialized refrigeration circuits and high-pressure hydraulic lines. This HVAC flare cap is engineered to withstand pressures up to 5,000 PSI depending on the application and temperature variables ranging from -20°F to +220°F. Whether you are sealing off a manifold port or protecting tubing during installation, these JB Industries fittings offer the precision machining required to maintain vacuum integrity and prevent refrigerant loss in R410A systems and other industrial environments.

• Uncompromising Durability: Solid C360 brass construction prevents cracking and stripping under high torque during installation.
• Industry Compliance: Engineered to AHRI and SAE J513 specifications, ensuring universal compatibility with standard 5/16" flare porting.
• Versatile Application: Suitable for multi-material tubing including copper, aluminum, steel, and plastic (with proper flaring tools).
• Secure Sealing: Precision-tapered 45-degree flare seat provides a reliable mechanical seal in pneumatic and vacuum applications.
• Made in the USA: Produced with strict quality control to eliminate the porosity issues often found in low-grade cast fittings.

Is the JB N5-5 compatible with high-pressure refrigerants?
Yes, this 5/16" SAE Flare Cap is rated for use with modern refrigerants, including R410A, and is capable of handling the high discharge pressures typical of these systems.

Does this cap require a gasket or TEFLON tape?
No, SAE flare fittings rely on a precision-machined metal-to-metal contact between the flare and the seat. Using tape or sealant on the threads can interfere with the physical seal and is not recommended.

Can these be used in marine or hydraulic applications?
Absolutely. The high-grade brass fitting cap design is highly resistant to saltwater corrosion and is rated for hydraulic pressures up to 5,000 PSI, making it ideal for marine and industrial fluid power systems.

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.