Rotary seal Prädifa series C9 | Product Series

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Seal Material

Inside Diameter (mm)

Groove Width

Element Height (mm)

Outside Diameter (mm)

Minimum Working Temperature (C)

Maximum Working Temperature (C)

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Rotary seal Prädifa series C9 Rotary seal Prädifa series C9

Rotary seal Prädifa series C9

Where to Buy

Rotary seal for rotary distributors. Dynamic function on inner diameter. Single-acting. For high-pressure applications.

Technical Specifications

  • Media: Hydraulic
  • Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR)
  • Maximum Operating Pressure: 6 bar
  • Minimum Operating Temperature: -25 to -10 °C
  • Maximum Operating Temperature: 80 °C
  • Maximum Surface Speed: 0.2 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Thermal Application Type: Standard Moderate Temperature (-35 to 100°C)
  • Pressure Rating: Low Pressure (< 160 bar)

Full Product Description

The C9 rotor seal is a compact seal for use as an end seal for low-pressure channels in rotary transmissions. It consists of a wear-resistant basic rubber element and an anti-extrusion ring which increases stability and prevents extrusion into the gap which may be variable due to eccentricity and the rotary motion. The sealing element was designed specifically as an end seal and, due to the layout, is able to withstand higher pressure peaks.
For pressures below 10 bar, we recommend the C5 rotor seal.

• Insensitive to pressure peaks.
• Installation in closed and undercut housings.

Range of application:
Mainly for use as an end-seal in all rotary transmissions of construction machinery, mobile hydraulics and machine tool hydraulics, as well as for low pressure swivel joints.

Related Documents

Literature and Reference Materials
Installation Guidelines for Rotary Seals--PTD3350
Storage and Cleaning of Elastomer Seals--PTD3032
Product Demos & Tutorials
How to Properly Store and Clean Elastomer Seals
Mixing the right ingredients: Material Development at Parker-Prädifa
Parker Final Exam in Physics / Sealing Systems Put to the Test
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Products Seal Material Inside Diameter (mm) Groove Width Element Height (mm) Outside Diameter (mm) Minimum Working Temperature (C) Maximum Working Temperature (C)
C9014000656 N3764 140 11 10 160 -10 80
C9016000656 N3764 160 11 10 180 -10 80
C9017000656 N3764 170 11 10 190 -10 80
C9020000656 N3584 200 11 10 220 -25 80
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