RX1-666-4

Eaton Aeroquip 666-4 is a medium-pressure PTFE hose for aerospace fluid-conveyance applications. It has a smooth, seamless extruded PTFE inner tube with a single Type 300-series stainless-steel wire braid reinforcement, providing flexibility for installations subject to movement and vibration.

The 666 hose series is documented for fuel, hydraulic, coolant and other aircraft-fluid service at nominal pressures below 103 bar. Eaton identifies the PTFE construction as resistant to fuels, lubricating oils, coolants and solvents commonly used in aircraft service.

• Manufacturer: Eaton Aeroquip
• Manufacturer part number: 666-4
• Roctexo part number: RX1-666-4
• Hose type: medium-pressure PTFE hose with stainless-steel braid
• Temperature range: -54 °C to +233 °C
• Hose size: -4
• Nominal internal diameter: approximately 4.8 mm
• Nominal outside diameter: approximately 7.9 mm
• Unit of measure: foot
• Hose series documentation identifies conformity to MIL-DTL-27267; verify installation and assembly requirements for the intended application.

For technical reference, consult the Eaton 666/667 series hose product page and the Eaton hose identification, selection and assembly guide.