ISO 6626-3:2008 specifies the essential dimensions of coil-spring-loaded, nitrided oil control rings made of steel, of piston ring types SOR (with R-shaped groove) and SOV (with V-shaped groove).

ISO 6626-3:2008 applies to coil-spring-loaded, nitrided oil control rings made of steel with a diameter of between 60 mm and 200 mm inclusive for reciprocating internal combustion engines. It can also be used for piston rings of compressors working under analogous conditions.

General information

  • Status :  Withdrawn
    Publication date : 2008-06
  • Edition : 1
    Number of pages : 20
  • :
    ISO/TC 22/SC 34
    Propulsion, powertrain and powertrain fluids
  • 43.060.10
    Engine block and internal components

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