JB U2-10 5/8" SAE Flare to Flare Union

The JB Industries U2-10 is a heavy-duty 5/8" SAE flare union precision-machined in the USA from high-tensile C360 and C370 brass. This refrigeration flare fitting is engineered to meet SAE J513 standards, ensuring a reliable metal-to-metal seal in high-pressure HVACR environments. Designed for 5/8" OD tubing, this union is compatible with copper, brass, aluminum, and steel tubing, making it a versatile staple for HVAC installation and repair. Its forged brass body eliminates the risk of porosity and cracking, recurring issues often found in lower-quality imports. With a pressure rating of up to 5,000 psi depending on the tubing material and conditions, it is fully suitable for high-pressure refrigeration systems including R-410A. The 5/8 inch flare to flare connection provides clear wrenching surfaces and dryseal threads to minimize leakage under mechanical vibration. For veteran technicians, the U2-10 offers the reliability needed to maintain system integrity during critical service calls.

• High-Tensile Brass: Machined from premium C360 and C370 brass with 65% copper content for superior corrosion resistance and strength.
• Broad Compatibility: Securely joins 5/8" OD HVAC tubing across multiple materials, including flareable plastic and aluminum.
• Extreme Pressure Support: Engineered to handle vacuum and pressures up to 5,000 psi, comfortably exceeding standard refrigeration requirements.
• Industrial Standards Compliance: Conforms to SAE, ASA, and ARI specifications for refrigeration, hydraulic, and marine service.

• Can this be used with R-410A systems? Yes, the high-tensile brass construction is specifically designed to handle the increased operating pressures of modern refrigerants.
• Does this require thread sealant? While a flare fitting relies on a mechanical metal-to-metal seal, a small amount of compatible refrigerant oil on the flare face is recommended to ensure a proper seat.
• Is this union suitable for high-vibration applications? Yes, the forged design has excellent vibration resistance; however, using long flare nuts is recommended in high-vibration scenarios to prevent thinning of the flare.

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.