The Government of Canada’s terminology and linguistic data bank.

BACKUP RING [1 record]

Record 1 2007-12-13


Subject field(s)
  • Joining Elements (Mechanical Components)
  • Aeronautical Engineering and Maintenance

Backup rings are used in conjunction with seals subjected to high pressure. They prevent high pressures from pinching the seal between moving parts and the stationary parts, such as a piston and cylinder wall. They give additional strength to the seal.


back-up ring: term officially approved by the Aeronautical Terminology Standardization Committee (ATSC) - Helicopters.


  • Éléments d'assemblage (Composants mécaniques)
  • Aérotechnique et maintenance

bague d'appui : terme uniformisé par les Comités d'uniformisation de la terminologie aéronautique (CUTA) - Hélicoptères et Maintenance.


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