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Curved Backup Ring - NBR

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574-368 | BU-90NBR-7.75x3/16-C/S(1) | CRC Distribution Inc.
574-368 | BU-90NBR-7.75x3/16-C/S(1) | CRC Distribution Inc.
574-368 | BU-90NBR-7.75x3/16-C/S(1) | CRC Distribution Inc.
574-368 | BU-90NBR-7.75x3/16-C/S(1) | CRC Distribution Inc.
SKU: 574-368

574-368 90A Buna-N Rubber Backup Ring | 7 3/4 in ID 3/16 in CS

30 EA IN STOCK*

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.

$6.77 / EA
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90A Durometer | Buna-N Rubber Material | 7 3/4 in Nominal Inner Diameter | 3/16 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

  • 3/16 Inch
  • 90A
  • Parker
  • NBR
  • Buna-N Rubber
  • 240 °F
  • -40 °F
  • 0.076 Inch
  • 7 3/4 Inch
  • 8 1/8 Inch
  • Varies According to Diametral Clearance
  • 15 Years
  • 574
  • -40° to +240°F
  • 0.06 Inch
  • ±0.004
  • inch
  • 0.02 lbs per EA