ISO 6621-4:2015
Internal combustion engines - Piston rings - Part 4: General specifications
- Standard No.
- ISO 6621-4:2015
- Release Date
- 2015
- Published By
- International Organization for Standardization (ISO)
- Status
- Replace By
- ISO 6621-4:2024
- Latest
- ISO 6621-4:2024
- Scope
- This part of ISO 6621 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.
ISO 6621-4:2015 Referenced Document
- ISO 6507-3:2005 Metallic materials - Vickers hardness test - Part 3: Calibration of reference blocks
- ISO 6621-1:2007 Internal combustion engines - Piston rings - Part 1: Vocabulary
- ISO 6621-2:2003 Internal combustion engines - Piston rings - Part 2: Inspection measuring principles
- ISO 6622-1:2003 Internal combustion engines - Piston rings - Part 1: Rectangular rings made of cast iron
- ISO 6622-2:2013 Internal combustion engines.Piston rings.Part 2: Rectangular rings made of steel
- ISO 6623:2013 Internal combustion engines.Piston rings.Scraper rings made of cast iron
- ISO 6624-1:2001 Internal combustion engines - Piston rings - Part 1: Keystone rings made of cast iron
- ISO 6624-2:2003 Internal combustion engines - Piston rings - Part 2: Half keystone rings made of cast iron
- ISO 6624-3:2001 Internal combustion engines - Piston rings - Part 3: Keystone rings made of steel
- ISO 6624-4:2003 Internal combustion engines - Piston rings - Part 4: Half keystone rings made of steel
- ISO 6625:1986 Internal combustion engines; Piston rings; Oil control rings
- 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 6626-3:2008 Internal combustion engines - Piston rings - Part 3: Coil-spring-loaded oil control rings made of steel
- ISO 6627:2011 Internal combustion engines - Piston rings - Expander/segment oil-control rings
ISO 6621-4:2015 history
- 2024 ISO 6621-4:2024 Internal combustion engines — Piston rings — Part 4: General specifications
- 2015 ISO 6621-4:2015 Internal combustion engines - Piston rings - Part 4: General specifications
- 2003 ISO 6621-4:2003 Internal combustion engines - Piston rings - Part 4: General specifications
- 1988 ISO 6621-4:1988 Internal combustion engines; piston rings; part 4: general specifications
