BS ISO 6621-3:2021

This standard BS ISO 6621-3:2021 Internal combustion engines. Piston rings is classified in these ICS categories:

• 43.060.10 Engine block and internal components

This document classifies materials intended for the manufacture of piston rings, based on their mechanical properties and the stresses the materials are capable of withstanding.

This document is applicable to piston rings for reciprocating internal combustion engines up to and including those of 200 mm in diameter. It is also applicable to piston rings of compressors working under similar conditions.