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ISO/DIS 6621-1

Internal combustion engines — Piston rings — Part 1: Vocabulary ISO/DIS 6621-1

General information

40.60   Close of voting   Mar 26, 2026

ISO

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

International Standard

01.040.43   Road vehicle engineering (Vocabularies) | 43.060.10   Engine block and internal components

Scope

ISO 6621-1:2018 defines the most commonly used terms for piston rings. These terms designate either types of piston rings or certain characteristics and phenomena of piston rings.
The terms and definitions in this document apply to piston rings for reciprocating internal combustion engines. They may also be used for piston rings of compressors working under analogous conditions.
NOTE 1 Further terms and definitions covering measuring principles are given in ISO 6621-2:2003.
NOTE 2 This document gives the equivalent terms in the Chinese, English, French, German, Italian, Japanese, Portuguese, Russian and Spanish language.

Life cycle

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ISO 6621-1:2018

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ISO/DIS 6621-1
40.60 Close of voting
Mar 26, 2026




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