Back-up ring Prädifa series XC, Polon® | #XC03000010903YE


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XC03000010903YE

Back-up ring Prädifa series XC, Polon® | #XC03000010903YE

Spiral PTFE back-up ring to prevent extrusion.


Technical Specifications

  • Media: Hydraulic
  • Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®)
  • Maximum Operating Pressure: 200 bar, 400 bar
  • Minimum Operating Temperature: -190 °C
  • Maximum Operating Temperature: 230 °C
  • Maximum Surface Speed: 0 m/sec, 0.5 m/sec, 1.0 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Thermal Application Type: Extremely High Temperature (> 205°C)
  • Pressure Rating: Medium Pressure (< 250 bar)
Safety Warning

Item Information

The XC Polon® anti-extrusion ring (spiral cut version) is used in combination with O-rings, preferably in static applications, to prevent gap extrusion. XC anti-extrusion rings are suitable for moderate pressure loads. Due to the spiral shape, the rings are easy to install in closed grooves.

Polon® anti-extrusion rings are available in three versions:
XA: Single turn continuous
XB: Single turn scarf cut
XC: Spiral cut

• Insensitive to pressure peaks.
• High extrusion resistance.
• Excellent media resistance in case of suitable compound selection.
• Suitable compounds available for special requirements of the chemical process industry.
• Suitable compounds available for special requirements of the food processing industry.
• Any desired nominal diameter available due to use of machining technique.
• Installation in closed and undercut housings.

We recommend to specify back-up rings when at least one of the following working conditions is present in cases where the intention is to seal with O-Rings only:
• Pressure above 70 bar.
• Diametral clearance exceeding 0.25 mm at p > 10 bar.
• High stroke frequency.
• High temperatures.
• Contaminated medium.
• Strong pressure pulsing or pressure changes.

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Where to Buy

Local Contact

Parker Hannifin Manufacturing Germany GmbH & Co. KG

Packing Division Europe

Arnold-Jäger-Str. 1

74321 Bietigheim-Bissingen

Germany

Phone

+49 (0) 7142 351-0

Fax

+49 (0) 7142 351-293

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