ISO 6621-4:2015 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.
Status: PublishedPublication date: 2015-03
Edition: 3Number of pages: 28
Technical Committee: ISO/TC 22/SC 34 Propulsion, powertrain and powertrain fluids
- ICS :
- 43.060.10 Engine block and internal components
This standard contributes to the following Sustainable Development Goal:
Buy this standard
|std 1 145||PDF + ePub|
|std 2 145||Paper|
A standard is reviewed every 5 years
Stage: 90.92 (To be revised)
Will be replaced byUnder development
Got a question?
Check out our FAQs
+41 22 749 08 88
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.