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Overview - ISO 6621-5:2020 (Piston rings - Quality requirements) ISO 6621-5:2020 defines quality requirements for piston rings used in reciprocating internal combustion engines (road vehicles and oth…
What is ISO 6621 ‑ 5 about? ISO 6621 is a series of international standards on internal combustion engines of a road vehicle that specifies the quality requirements of piston rings . ISO 6621 ‑ 5 is…
1 Scope This part of ISO 6621 specifies those quality aspects that are capable of definition but not normally found on a drawing specification. It is applicable to the following: — single-piece pisto…