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ISO 6626-3:2019
M00004052
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ISO 6626-3:2019 Internal combustion engines - Piston rings - Part 3: Coil-spring-loaded oil control rings made of steel
standard by International Organization for Standardization, 10/01/2019
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ISO 6626-3:2019 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.