ISO 6621-4:1988
Internal combustion engines; piston rings; part 4: general specifications

Standard No.

ISO 6621-4:1988

Release Date

1988

Published By

International Organization for Standardization (ISO)

Status

Withdraw

Replace By

ISO 6621-4:2003

Latest

ISO 6621-4:2015

ISO 6621-4:1988 history

• 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