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ISO 6621-4:2024

Internal combustion engines — Piston rings — Part 4: General specifications ISO 6621-4:2024

Publication date:   May 1, 2024

General information

60.60 Standard published   May 1, 2024

ISO

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

International Standard

43.060.10   Engine block and internal components

Buying

Published

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Scope

This document specifies the general characteristics of piston rings for reciprocating internal combustion engines for road vehicles and other applications (the individual dimensional criteria for these rings are given in the relevant International Standards). It also provides a system for ring coding, designation, and marking. It is applicable to all such rings of a nominal diameter from 30 mm up to and including 200 mm.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 6621-4:2015

NOW

PUBLISHED
ISO 6621-4:2024
60.60 Standard published
May 1, 2024