Eaton 2021-6-6S Steel Flared Tube Connector 3/8 in

Product Description

The EATON 2021-6-6S is a steel flared tube connector designed for high-pressure hydraulic and fluid system applications. It features a 37-degree flare seat with Flare x Male NPT (MNPT) end connections, providing a reliable metal-to-metal seal between flared tubing and NPT-threaded ports. With a maximum working pressure of 8000 psi and a temperature range of -40 degrees F to 250 degrees F, this connector handles demanding service conditions. Licensed plumbers, hydraulic system technicians, and fluid power specialists install this type of fitting in both industrial and mobile equipment applications.

The 2021-6-6S is suited for hydraulic lines, fuel systems, and fluid transfer installations where a 3/8 inch OD tube must connect to a 3/8 NPT male port. The 37-degree flare angle conforms to SAE J514 (SAE 070102) standards, making it appropriate for OEM and field-service installations in industrial machinery, mobile equipment, and commercial fluid systems requiring high-pressure integrity.

Key Features

• 37-degree flare seat provides a metal-to-metal seal rated to 8000 psi
• Flare x MNPT end connections for direct tube-to-NPT port attachment
• Steel construction for durability in high-pressure service
• Operating temperature range of -40 degrees F to 250 degrees F
• Conforms to SAE 070102 standard
• Compact overall length of 1.43 inches for tight installation envelopes

Compatibility

Designed as an OEM-style replacement or new-installation connector for hydraulic and fluid systems using 3/8 inch OD flared tubing with 3/8 NPT threaded ports, per SAE 070102 specifications.

Installation Notes

Installation should be performed by a qualified hydraulic or plumbing technician familiar with SAE flare fittings and NPT thread standards. De-pressurize and bleed the system completely before removing or installing any fittings. Inspect the tube flare for cracks or deformation before assembly, as a compromised flare face will prevent proper sealing. Follow applicable industry standards and equipment manufacturer guidelines for thread engagement and system pressure testing after installation.