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 6610-01-400-3880
NSN 6220-01-285-2269
NSN 6220-01-584-5082
NSN 6145-00-648-2726
NSN 5960-01-026-3505
NSN 5920-01-107-4454
NSN 5960-01-260-7430
NSN 5950-01-034-9333
NSN 5985-00-506-6364
NSN 5910-01-592-2746
NSN 6240-00-984-3354
NSN 6650-01-265-2672