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ISO 6621-4:2015

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

Mar 18, 2015
95.99 Withdrawal of Standard   May 1, 2024

General information

95.99     May 1, 2024

ISO

ISO/TC 22/SC 34

International Standard

43.060.10  

English  

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Scope

ISO 6621-4:2015 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WITHDRAWN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 6621-4:2003

NOW

WITHDRAWN
ISO 6621-4:2015
95.99 Withdrawal of Standard
May 1, 2024

REVISED BY

PUBLISHED
ISO 6621-4:2024

National adoptions

SSH ISO 6621-4:2015  
DPS

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

60.60 Standard published

DPS/KT 320 more