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 5930-01-434-8769
NSN 5996-01-421-4417
NSN 6610-00-012-8072
NSN 6320-00-242-3300
NSN 5965-01-184-2477
NSN 6150-01-487-4117
NSN 5925-00-797-0860
NSN 6220-01-258-1283
NSN 6105-01-548-4972
NSN 5930-00-400-6214
NSN 7035-01-290-1447
NSN 5925-00-500-9664