Eaton 2041-1-6-6S Steel Bulkhead Union 3/8 in Tube Od

Product Description

The EATON 2041-1-6-6S is a steel flared tube bulkhead union designed to pass a hydraulic or fluid line through a panel, bulkhead, or enclosure wall with a secure, leak-resistant connection. It accepts 3/8-inch tube OD on both ends using 37-degree flare fittings with 9/16-18 SAE threads, and it holds up to 4000 psi working pressure. The flare-by-flare end configuration allows the fitting to seat tightly against both sides of a bulkhead, keeping plumbing runs clean and eliminating loose line movement through structural panels. HVAC technicians, hydraulic system installers, and fluid power mechanics are the typical trades who work with this fitting type.

This bulkhead union suits residential and light commercial applications where a refrigerant, hydraulic, or fluid line must pass through a cabinet wall, mounting plate, or partition. The 37-degree flare angle conforms to SAE standard 070601, making it compatible with JIC-style and SAE 37-degree flare systems common in HVAC, refrigeration, hydraulic, and pneumatic equipment. Its rated temperature range of -40 degrees F to 250 degrees F covers most mechanical system operating conditions encountered in the field.

Key Features

• Bulkhead-mount design routes fluid lines cleanly through panels without separate clamps or adapters
• 4000 psi maximum working pressure rated for demanding hydraulic and fluid power applications
• 37-degree SAE flare seats per SAE 070601 for compatibility with standard JIC and SAE flare systems
• Steel construction provides durability in high-pressure and wide temperature-range environments
• Operating range of -40 degrees F to 250 degrees F suits most mechanical and HVAC service conditions
• Flare x Flare ends allow consistent, tool-tightened connections on both sides of the bulkhead

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic, refrigeration, and fluid power systems using 3/8-inch OD tubing with 37-degree SAE flare connections and 9/16-18 thread size.

Installation Notes

Installation should be performed by a licensed or qualified mechanic, HVAC technician, or fluid power specialist familiar with SAE flare fittings and applicable system pressure ratings. Depressurize and isolate the fluid or refrigerant circuit completely before removing any existing fittings or installing this union. Use appropriate flare nut wrenches to avoid distorting the flare seats; do not over-tighten, as flare connections rely on metal-to-metal seating and excess torque can damage the flare cone. Verify thread engagement and inspect the flare seats for scoring or burrs before applying system pressure.