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ISO 6626-3:2019

Internal combustion engines — Piston rings — Part 3: Coil-spring-loaded oil control rings made of steel

Publication date:   Sep 22, 2019

General information

90.92   Standard to be revised   Oct 27, 2025

ISO

ISO/TC 22/SC 34 Propulsion, powertrain and powertrain fluids

International Standard

43.060.10   Engine block and internal components

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 6626-3:2008

NOW

PUBLISHED
ISO 6626-3:2019
90.92 Standard to be revised
Oct 27, 2025

REVISED BY

IN_DEVELOPMENT
ISO/WD 6626-3