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Curved Backup Ring - NBR

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574-161 | BU-90NBR-5.5x3/32-C/S(1) | CRC Distribution Inc.
574-161 | BU-90NBR-5.5x3/32-C/S(1) | CRC Distribution Inc.
574-161 | BU-90NBR-5.5x3/32-C/S(1) | CRC Distribution Inc.
574-161 | BU-90NBR-5.5x3/32-C/S(1) | CRC Distribution Inc.
SKU: 574-161

574-161 90A Buna-N Rubber Backup Ring | 5 1/2 in ID 3/32 in CS

Call for Availability*

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.

$4.33 / EA
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90A Durometer | Buna-N Rubber Material | 5 1/2 in Nominal Inner Diameter | 3/32 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

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Item Specifications

  • 3/32 Inch
  • 90A
  • Parker
  • NBR
  • Buna-N Rubber
  • 240 °F
  • -40 °F
  • 0.053 Inch
  • 5 1/2 Inch
  • 5 11/16 Inch
  • Varies According to Diametral Clearance
  • 15 Years
  • 574
  • -40° to +240°F
  • 0.045 Inch
  • ±0.003
  • inch
  • 0.00 lbs per EA