JB U3-6C 3/8" SAE x 3/8" FPT Adapter

The JB Industries U3-6C is a precision-machined 3/8" SAE Male Flare x 3/8" FPT Adapter engineered for the rigorous demands of high-pressure HVACR systems. Built by veteran technicians in the USA, this component transitions seamlessly between flare connections and female pipe threads, ensuring a leak-proof seal in refrigeration service and hydraulic applications. Constructed from high-tensile strength brass (65% copper, 35% zinc), it offers superior corrosion resistance compared to lower-quality imports. With a 5,000 psi pressure rating, it is optimized for modern high-pressure refrigerants and vacuum procedures. The long dryseal pipe threads provide additional clearance for flare nuts, reducing the risk of mechanical failure under extreme vibration. This ACR tube fitting is compatible with copper, brass, aluminum, steel, and plastic tubing, provided an appropriate flare is generated, making it a staple for any service truck or mechanical install.

• Maximum Durability: Forged from premium brass for high-tensile strength and resistance to stress cracking.
• Precise Fit: Conforms to SAE J513 standards for guaranteed compatibility with industrial and automotive flare fittings.
• Versatile Application: Suitable for HVACR vacuum systems, oil lines, and pneumatic circuits involving various metal and plastic tubes.
• Leak Prevention: Features dryseal taper pipe threads to minimize the potential for common refrigerant leaks.

What is the maximum working pressure for the U3-6C?
While the fitting itself can handle up to 5,000 psi depending on conditions, the system's limit is often determined by the surrounding components. It is rated for extreme pressure in ACR refrigeration service.

Can I use this adapter with plastic tubing?
Yes, the JB U3-6C adapter is compatible with plastic tube as long as the tube material is properly flared and within the operational temperature and pressure limits of the application.

Should I use thread sealant on both ends?
Apply a compatible thread sealant (like Teflon tape or pipe dope) only to the 3/8" FPT (Female Pipe Thread) side. The 3/8" SAE Flare side relies on metal-to-metal contact for its seal and does not require sealant.

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.