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ISO 6622-1:2021

Internal combustion engines — Piston rings — Part 1: Rectangular rings made of cast iron

Publication date:   Aug 10, 2021

General information

90.20   Standard under periodical review   Jul 15, 2026

ISO

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

International Standard

27.020   Internal combustion engines

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Scope

This document specifies the essential dimensional features of rectangular rings made of cast iron, Types R, B, BA and M, having diameters up to and including 200 mm, used in reciprocating internal combustion piston engines. It is also applicable to piston rings of compressors working under similar conditions.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 6622-1:2003

NOW

PUBLISHED
ISO 6622-1:2021
90.20 Standard under periodical review
Jul 15, 2026