Parker 6-6 Flo-s Compression Tube Connector Orfs X Nptf

Product Description

The PARKER 6-6 FLO-S is a compression tube connector designed to join 3/8-inch OD tubing to a 3/8-18 NPTF threaded port using an O-Ring Face Seal (ORFS) interface on one end. Constructed from zinc-plated steel, it delivers a rated maximum working pressure of 6000 psi, making it suitable for high-pressure hydraulic and fluid-power lines. The ORFS end provides a leak-free metal-to-metal face seal backed by an O-ring, which is the preferred connection style in demanding fluid-system applications. Licensed plumbers, hydraulic technicians, and fluid-power specialists install this fitting as part of tubing assemblies in industrial and mobile equipment systems.

This connector is used in hydraulic systems, fluid-power circuits, and high-pressure plumbing installations where a reliable transition from compression tube to NPTF threaded ports is required. It is appropriate for both stationary and mobile equipment applications. The NPTF end seals through thread interference, eliminating the need for additional thread sealant in many installations, while the ORFS end ensures a positive, bubble-tight seal at the tube connection.

Key Features

• Maximum working pressure rated at 6000 psi for demanding hydraulic and fluid-power service
• O-Ring Face Seal (ORFS) to NPTF end configuration supports leak-free connections
• Zinc-plated steel construction provides corrosion resistance in moderate-exposure environments
• 3/8-inch tube outside diameter compatibility with 3/8-18 NPTF thread
• Compact connector body suitable for tight routing in equipment plumbing layouts

Compatibility

Designed as an OEM-style fitting for hydraulic and fluid-power tube assemblies using 3/8-inch OD tubing terminated to 3/8-18 NPTF threaded ports with an ORFS face-seal interface.

Installation Notes

Installation should be performed by a qualified hydraulic technician or licensed plumber familiar with high-pressure fluid-system assembly. Depressurize and isolate the hydraulic circuit fully before disconnecting or installing any fittings. Inspect the O-ring seating face for nicks or contamination before assembly, as surface defects on ORFS connections are a leading cause of leaks. Follow the fitting manufacturer's assembly instructions and applicable industry standards for tube preparation and fitting engagement.