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The PARKER PT-00623 is a flareless bite-type tube male connector designed for hydraulic and fluid power tubing assemblies. This fitting uses a ferrule-biting mechanism to grip and seal on the outside diameter of the tube without requiring a flared end, simplifying field assembly and reducing prep time. It accepts 18 mm tube OD and threads into a 3/4-16 UNF port. Flareless bite-type fittings are standard in industrial hydraulic systems, mobile equipment, and fluid transfer lines where reliable leak-free connections are required. This connector is installed by plumbers, pipefitters, and hydraulic technicians working on medium- to high-pressure fluid systems.
This fitting is suited for applications involving 18 mm OD tubing connecting to 3/4-16 UNF threaded ports. Typical install scenarios include hydraulic power units, machine tool circuits, mobile hydraulic systems, and industrial fluid distribution lines where flareless connections are specified. The bite-type design eliminates the need for a flaring tool, making it practical for both shop fabrication and field repair work.
Designed as an OEM-style replacement or new-installation fitting for hydraulic and fluid power systems using 18 mm OD flareless tubing with 3/4-16 UNF ported components.
Installation is performed by qualified hydraulic technicians or pipefitters. Depressurize and isolate the hydraulic circuit completely before removing or installing any fittings. Follow the fitting manufacturer assembly procedure for bite-type fittings, which typically requires a presetting step to seat the ferrule before final installation. Verify thread type and tube OD match before assembly to prevent cross-threading or inadequate bite engagement.
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