International Standard
ISO 6621-4:2024
Internal combustion engines — Piston rings — Part 4: General specifications
Reference number
ISO 6621-4:2024
Edition 4
2024-05
© ISO 2024
International Standard
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Published (Edition 4, 2024)

ISO 6621-4:2024

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CHF 151
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2024-05
    Stage
    : International Standard published [60.60]
  • Edition
     : 4
    Number of pages
     : 28
  • Technical Committee :
    ISO/TC 22/SC 34
    ICS :
    43.060.10 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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