prBAS ISO 6621-4:2027
Internal combustion engines — Piston rings — Part 4: General specifications
General information
Status:Project
Number of pages:28
Adoption method:Korice
Language:engleski
Edition:3.
Realization date:05.10.2026
Forseen date for next stage code:29.10.2026
Technical committee:BAS/TC 35, Road vehicles
ICS:
43.060.10, Engine block and internal components
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.
Lifecycle
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Original document and degree of correspondence
ISO 6621-4:2024, identical
Relation to BAS standards
Work material
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