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Curved Backup Ring - NBR

SKU: 574-432

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.

$5.42 / EA

90A Durometer | Buna-N Rubber Material | 5 3/8 in Nominal Inner Diameter | 1/4 in Cross Section | Backup Ring

Features

  • 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

  • 1/4 Inch
  • 90A
  • Parker
  • NBR
  • Buna-N Rubber
  • 240 °F
  • -40 °F
  • 0.117 Inch
  • 5 3/8 Inch
  • 5 7/8 Inch
  • Varies According to Diametral Clearance
  • 574
  • 15 Years
  • 574
  • -40° to +240°F
  • 0.096 Inch
  • ±0.005
  • inch
  • 0.02 lbs per EA