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Backups

Back-ups

Back-up rings are installed together with o-rings or other accompanying seals to prevent gap extrusion in sealing applications. They are available in a spiral, split, or solid design.

Seals/Backup Rings 
Viewing Page 1 of 272 (3,255 results)
574-224
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.

  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces
$0.84
/EA
574-228
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.

  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces
$1.13
/EA
574-230
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.

  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces
$1.23
/EA
575-232
IN STOCK

Solid Urethane backup ring with a flat cross-section.

$1.47
/EA
574-334
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.

  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces
$1.61
/EA
574-218
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.

  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces
$0.60
/EA
573-346
IN STOCK

Hytrel backup ring with a flat cross-section.

Excellent extrusion resistance and tolerance to fluids such as phosphate esters, hydraulic oil, and water.

  • Improved extrusion resistance compared to standard FKM or NBR backups
  • Can be stretched over larger diameters and will return quickly to their original size
$2.79
/EA
574-231
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.

  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces
$1.31
/EA
574-330
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.

  • Excellent extrusion resistance
  • Easily stretched for installation
  • Lubrication is enhanced by rubber which absorbs system
    fluid and does not plate out on rubbing surfaces
$1.44
/EA
573-218
IN STOCK

Hytrel backup ring with a flat cross-section.

Excellent extrusion resistance and tolerance to fluids such as phosphate esters, hydraulic oil, and water.

  • Improved extrusion resistance compared to standard FKM or NBR backups
  • Can be stretched over larger diameters and will return quickly to their original size
$1.11
/EA
Teflon Backup Ring | CRC Distribution Inc.
IN STOCK

BU-TFE-80×1.9×5-C/S

$8.88
/EA
575-218T
IN STOCK

Solid Teflon backup ring with a flat cross-section.

PTFE can withstand high temperatures and is compatible with nearly all fluids.

  • High temperature range
  • Deals very well with surface wear
$2.86
/EA
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