R09 DualFlex External

Overview

The R09 Duraflex is a cutting-edge, double-acting rotary seal designed for sealing shafts, axles, cylinder bores, rotary manifolds, and swivels with rotary, helical, or oscillating movement. This innovative sealing solution features a high-grade PTFE material ring, activated by an elastomeric O-Ring, or custom dome shaped rubber energizer providing exceptional sealing performance across a wide range of applications and industries.

Design and Functionality

The R09 Duraflex seal’s contact surface profile is meticulously engineered for optimal performance in high-pressure environments and at low sliding speeds. Its symmetrical cross-section allows it to effectively respond to pressure from both directions, ensuring double-acting performance. Initial contact pressure is provided through the radial compression of the energizer. As system pressure increases, the energizer enhances the contact pressure, ensuring reliable sealing under all conditions. The seal ring may feature one or two continuous machined grooves, which enhance sealing efficiency by increasing specific surface load pressure, forming a lubricant reservoir, and reducing friction.

Features and Benefits

  • Suitable for shaft and bore sealing applications
  • Double-acting seal
  • Low friction
  • Integrated lubricant reservoir
  • Stick-slip free operation
  • No vulcanization to mating surfaces
  • Simple groove design with small dimensions
  • Effective at high pressure and low sliding speeds
  • Available in all sizes up to 106.3 inches diameter (2,700 mm) (102.4 inches for shaft seals (2,600 mm))

Typical Applications

The R09 is ideal for use in hydraulic and pneumatic equipment across various industries, including:

  • Rotary distributors and unions
  • High-pressure valve stems
  • Manipulators
  • Pivoting motors in mobile hydraulics and machine tools
  • Hydraulic motors
  • Blow molding machines
  • Top drives
  • Rotary tables
  • FPSO swivel units
  • Core cutting equipment

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