Parker FB6UC6-HBLK Union Tube Fitting 3/8 Inch Od

Product Description

The PARKER FB6UC6-HBLK is a push-to-connect union tube fitting designed for tube-to-tube connections in fluid and pneumatic systems. Constructed from Kynar (PVDF), this fitting handles up to 250 psi working pressure and is rated for a vacuum of 28 inches Hg, making it suitable for both pressure and light vacuum applications. The black FKM o-ring provides compatibility with a range of aggressive media. Installation requires no tools for tube insertion — the push-to-connect mechanism secures the tube end on contact. Licensed plumbers, HVAC technicians, and industrial pipe fitters commonly install this type of fitting in chemical handling, water treatment, and process piping systems.

This union fitting is sized for 3/8 inch OD tubing on both ends, providing an inline straight connection with equal-size tube ends. Its Kynar construction makes it well suited for corrosive fluid service, deionized water lines, and chemical transfer applications where metal fittings are not appropriate. The FKM o-ring sealing element extends compatibility to fuels, oils, and many aggressive solvents. This fitting is packaged and sold individually.

Key Features

• Push-to-connect design — no tools required for tube insertion
• Kynar (PVDF) body for excellent chemical and corrosion resistance
• FKM o-ring sealing element for compatibility with aggressive media
• 250 psi maximum working pressure
• 28 inches Hg vacuum rating for light vacuum service
• Black color for easy visual identification in mixed-material piping systems

Compatibility

Designed for use with 3/8 inch OD tubing in push-to-connect tube-to-tube union applications. Suitable for systems requiring Kynar fittings with FKM seals.

Installation Notes

Depressurize and drain the system fully before removing or installing any push-to-connect fitting. Ensure tube ends are cut square, deburred, and clean before insertion to achieve a proper seal. This fitting type is typically installed by licensed plumbers or qualified HVAC and process piping technicians in accordance with applicable local codes. Do not exceed the rated working pressure or vacuum rating of the fitting.