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 6135-00-377-9165
NSN 5998-00-225-2335
NSN 5950-01-449-1358
NSN 6650-01-476-3329
NSN 5835-01-112-9008
NSN 5920-01-632-1403
NSN 6150-01-247-6293
NSN 6240-01-441-3606
NSN 5905-01-556-9578
NSN 6620-01-566-3456
NSN 5835-01-261-2978
NSN 5965-00-852-6258