ISO 6621-4:2003

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

95.99 Withdrawal of Standard 18 mar 2015

General information

Current stage: 95.99 Effective date: 18 mar 2015

Originator: ISO

Owner: ISO/TC 22

Type: International Standard

ICS: 43.060.10

Scope

ISO 6621-4:2003 specifies the general characteristics of piston rings for both reciprocating internal combustion engines and compressors (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 diameter greater than or equal to 200 mm.

Life cycle

PREVIOUSLY

Revises
ISO 6621-4:1988

NOW

WITHDRAWN
ISO 6621-4:2003
95.99 Withdrawal of Standard
18 mar 2015

REVISED BY

WITHDRAWN
ISO 6621-4:2015

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