JB N5-10 5/8" SAE Fitting Cap

The JB N5-10 5/8" SAE Fitting Cap is a critical component for technicians requiring a reliable, permanent seal on refrigeration and hydraulic systems. Machined from high-tensile American Made Brass (C36000 and C37000 alloys), this heavy flare fitting cap is engineered to withstand pressures up to 5,000 psi and deep vacuum environments. The 5/8" SAE connection features 45-degree flare threads that comply with SAE J513 standards, ensuring a precise leak-proof interface with copper, brass, aluminum, and steel tubing. Designed for refrigeration access valve sealing, the N5-10 utilizes a heavy-duty forging process to eliminate internal cracks and material fatigue common in budget imports. For contractors managing HVAC/R field service, these caps provide the robust protection needed for high-pressure ACR systems and industrial fluid transfer lines.

Key Benefits

• Industrial Pressure Rating: Capable of handling vacuum and pressures up to 5,000 psi depending on system conditions.
• Premium Material Integrity: Manufactured from refrigeration grade brass with 65% copper content for superior corrosion resistance and tensile strength.
• Multi-Tube Compatibility: Provides a secure seal for flared copper, aluminum, and plastic tubing when used with a standard flare nut.
• ASTM & SAE Compliance: Machined to meet SAE, ASA, and ARI standards for hydraulic and refrigeration service.
• Leak Prevention: Precision-machined threads and heavy-wall construction minimize refrigerant loss and prevent moisture ingress.

Common Questions

What is the thread size for the N5-10 cap?
The JB N5-10 is designed for a 5/8" SAE flare connection. In the HVAC/R industry, this corresponds to the outer diameter (OD) of the tubing it is intended to cap.

Can I use this cap for vacuum pump applications?
Yes, this heavy flare cap is specifically engineered for high-vacuum service. For a permanent seal during evacuation or system isolation, the solid brass construction effectively prevents atmospheric leakage.

Do these caps require a gasket or thread sealant?
Standard SAE 45-degree flare fittings rely on a metal-to-metal seat. For HVAC flare fittings, JB Industries recommends tightening 2-1/2 turns past hand-tight; while not strictly required for flare seats, a compatible refrigeration oil can assist in achieving a perfect seal without over-torquing.

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.