ISO/FDIS 6624-1

Internal combustion engines — Piston rings — Part 1: Keystone rings made of cast iron

General information

Current stage: 50.00 Final text received or FDIS registered for formal approval Aug 31, 2026

Originator: ISO

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

Type: International Standard

ICS: 43.060.10 Engine block and internal components

Scope

ISO 6624-1:2017 specifies the essential dimensional features of keystone rings made of cast iron, types T, TB, TBA, TM, K, KB, KBA and KM, having diameters from 70 mm up to and including 200 mm, used in reciprocating internal combustion piston engines.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 6624-1:2017

NOW

IN_DEVELOPMENT
ISO/FDIS 6624-1
50.00 Final text received or FDIS registered for formal approval
Aug 31, 2026