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 2925-00-441-8252
NSN 5920-01-172-2560
NSN 5935-01-590-5083
NSN 4140-01-249-7948
NSN 5965-00-486-7907
NSN 6145-01-103-0025
NSN 6110-01-115-9111
NSN 6645-00-900-5830
NSN 6105-01-227-5159
NSN 6650-01-607-5025
NSN 6620-01-035-7803
NSN 6135-01-079-7852