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 5990-01-388-0252
NSN 5950-01-377-1422
NSN 6620-00-410-0331
NSN 5920-01-088-7958
NSN 5935-01-048-1188
NSN 6685-01-388-2574
NSN 5950-00-587-0610
NSN 5999-01-194-9899
NSN 5930-01-445-7379
NSN 6620-01-535-6925
NSN 7035-01-126-3239
NSN 5930-01-107-6915