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 271 (3,251 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
$0.64
/EA
Add to Cart
573-342
Call for Availability

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
$1.43
/EA
Add to Cart
574-239
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
$1.43
/EA
Add to Cart
574-141
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
$0.82
/EA
Add to Cart
574-214
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
$0.42
/EA
Add to Cart
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
$0.87
/EA
Add to Cart
574-232
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
$1.14
/EA
Add to Cart
575-224
IN STOCK

Solid Urethane backup ring with a flat cross-section.

$0.93
/EA
Add to Cart
575-228
IN STOCK

Solid Urethane backup ring with a flat cross-section.

$1.00
/EA
Add to Cart
574-240
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
$1.59
/EA
Add to Cart
574-236
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
$1.38
/EA
Add to Cart
574-342
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
$1.73
/EA
Add to Cart
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