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Backup Rings

Backup Rings

Back-up rings or Anti Extrusion Rings do not have a sealing function. They are designed to prevent elastic sealing elements of gap extrusion.
Applications

  • Dynamic and static applications in reciprocating pistons and rods in hydraulic cylinders, plungers, etc.
  • Unfavorable tolerances and wide gap dimensions.
  • Intensely pulsating pressures and pressure change.

ST-08

ST-09

ST-11

ST-12