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  • BS ISO 6621-4:2015

    Current The latest, up-to-date edition.

    Internal combustion engines. Piston rings General specifications

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-03-2015

    Publisher:  British Standards Institution

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    This part of ISO6621 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 30mm up to and including 200mm.

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    Committee MCE/22
    Development Note Supersedes BS 5341-6.4(1992) and 98/713927 DC. (12/2003) Supersedes 12/30242220 DC. (04/2015)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 6622-2:2013 Internal combustion engines — Piston rings — Part 2: Rectangular rings made of steel
    ISO 6621-2:2003 Internal combustion engines Piston rings Part 2: Inspection measuring principles
    ISO 6624-2:2016 Internal combustion engines — Piston rings — Part 2: Half keystone rings made of cast iron
    ISO 6624-3:2017 Internal combustion engines — Piston rings — Part 3: Keystone rings made of steel
    ISO 6626-2:2013 Internal combustion engines Piston rings Part 2: Coil-spring-loaded oil control rings of narrow width made of cast iron
    ISO 6624-1:2017 Internal combustion engines — Piston rings — Part 1: Keystone rings made of cast iron
    ISO 6624-4:2016 Internal combustion engines — Piston rings — Part 4: Half keystone rings made of steel
    ISO 6507-3:2005 Metallic materials Vickers hardness test Part 3: Calibration of reference blocks
    ISO 6625:1986 Internal combustion engines Piston rings Oil control rings
    ISO 6622-1:2003 Internal combustion engines Piston rings Part 1: Rectangular rings made of cast iron
    ISO 6623:2013 Internal combustion engines Piston rings Scraper rings made of cast iron
    ISO 6627:2011 Internal combustion engines Piston rings Expander/segment oil-control rings
    ISO 6621-1:2007 Internal combustion engines Piston rings Part 1: Vocabulary
    ISO 6626-3:2008 Internal combustion engines Piston rings Part 3: Coil-spring-loaded oil control rings made of steel
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