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ISO 6621-4:2024

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

Internal combustion engines - Piston rings - Part 4: General specifications

PUBLISH DATE 2024
ISO 6621-4:2024

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.

SDO ISO: International Organization for Standardization
Document Number ISO 6621
Publication Date May 1, 2024
Language en - English
Page Count 36
Revision Level
Supercedes
Committee ISO/TC 22/SC 34
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