A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5915-01-285-7457
NSN 5985-01-386-4419
NSN 5915-01-489-0372
NSN 2925-01-415-0264
NSN 5945-00-648-6237
NSN 5998-01-279-9323
NSN 5905-01-495-0554
NSN 6150-00-106-6841
NSN 5910-01-177-4476
NSN 5999-00-163-6978
NSN 5996-01-113-7960
NSN 5945-01-612-7110