Knowledge Gateway
Unlock your learning potential with industry insights and standards that matter. Share your email to begin.
Unlock your learning potential with industry insights and standards that matter. Share your email to begin.
Status : Withdrawn
Standard Type : Main
Document No :
Document Year : 2015
Pages : 28
Edition : 3
Section Volume : Propulsion, powertrain and powertrain fluids (ISO/TC 22/SC 34.)
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 StandardDetails). 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.