BS ISO 6626-3:2019

This standard BS ISO 6626-3:2019 Internal combustion engines. Piston rings is classified in these ICS categories:

• 43.060.10 Engine block and internal components

This document specifies the essential dimensions of coil-spring-loaded oil control rings made of steel, of piston ring types SOR (with R-shaped groove) and SOV (with V-shaped groove).

This document applies to coil-spring-loaded oil control rings made of steel with a diameter from 60� mm up to and including 160� mm for reciprocating internal combustion engines. It can also be used for piston rings in compressors working under analogous conditions.