ISO 6624-3:2017

INTERNATIONAL ISO
STANDARD 6624-3
Second edition
2017-04
Internal combustion engines —
Piston rings —
Part 3:
Keystone rings made of steel
Moteurs à combustion interne — Segments de piston —
Partie 3: Segments trapézoïdaux en acier
Reference number
ISO 6624-3:2017(E)
©
ISO 2017

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ISO 6624-3:2017(E)

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ii © ISO 2017 – All rights reserved

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ISO 6624-3:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative reference . 1
3 Terms and definitions . 1
4 Overview . 1
5 Ring types and designation examples . 1
5.1 Type T — Straight faced keystone ring 6° . 1
5.1.1 General features. 1
5.1.2 Designation . 2
5.2 Type TB — Symmetrical barrel faced keystone ring 6° . 2
5.2.1 General features. 2
5.2.2 Designation . 4
5.3 Type TBA — Asymmetrical barrel faced keystone ring 6° . 4
5.3.1 General features. 4
5.3.2 Designation . 5
5.4 Type TM — Taper faced keystone ring 6° . 5
5.4.1 General features. 5
5.4.2 Designation . 7
5.5 Type K — Straight faced keystone ring 15° . 7
5.5.1 General features.
...