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Curved Backup Ring - NBR

SKU: 574-445

Curved Backup Ring - NBR

Parback® backup ring with a curved cross-section.

Parbaks are contoured on one face to minimize distortion of the o-ring when under pressure. Parbaks should be installed with the contoured face against the o-ring, but reversal does no harm.

$8.86 / EA
  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces

Item Specifications

  • Parker
  • NBR
  • 574
  • -40° to +240°F
  • inch
  • 0.03 lbs per EA