Specifies the essential dimensional features of half keystone rings made of cast iron, types HK and HKB, having diameters of from 38 mm up to and including 160 mm, used in reciprocating internal combustion piston engines..
Specifies the principles to be used in the measuring for inspection purposes of piston rings for both reciprocating internal combustion engines and compressors working under analogous conditions..
Specifies the essential dimensional features of rectangular rings made of steel, types R, B, BA and M, having diameters of from 30 mm up to and including 160 mm, used in reciprocating internal combustion piston engines..
Specifies the essential dimensional features of keystone rings made of steel, types T, TB, TBA, TM, K, KB, KBA and KM, having diameters of from 70 mm up to and including 160 mm, used in reciprocating internal combustion piston engines..
Classifies materials intended for the manufacture of piston rings, based on their mechanical properties and the stresses the materials are capable of withstanding..
Specifies the essential dimensional features of half keystone rings made of steel, types HK and HKB, having diameters of from 38 mm up to and including 160 mm, used in reciprocating internal combustion piston engines..
Specifies the essential dimensional features of scraper rings made of cast iron, types N, NM, E and EM, having diameters of from 30 mm up to and including 200 mm, used in reciprocating internal combustion engines..