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 6610-00-641-3015
NSN 5925-00-508-3644
NSN 6150-00-763-5067
NSN 6145-01-473-3892
NSN 5925-01-401-5314
NSN 6650-00-104-5368
NSN 6650-01-063-0035
NSN 6650-01-461-0976
NSN 2925-00-660-8131
NSN 5905-00-284-6411
NSN 4140-00-960-8222
NSN 6645-00-237-8414