ISO-6622-1 Complete Document History
Internal combustion engines - Piston rings - Part 1: Rectangular rings made of cast iron

Complete Current Edition:
   3RD EDITION - Part 1: Rectangular rings made of cast iron - Aug. 1, 2021

Obsolete Revision Information:
   2ND EDITION - Part 1: Rectangular rings made of cast iron - Dec. 1, 2003
   1ST EDITION - Part 1: Rectangular rings - Aug. 15, 1986