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 6685-01-634-0611
NSN 5975-01-648-1098
NSN 5920-01-624-4317
NSN 5990-01-050-7535
NSN 6610-00-401-2601
NSN 5920-01-053-7566
NSN 5990-00-988-7902
NSN 5835-01-279-9508
NSN 5895-01-422-7049
NSN 5996-01-362-4234
NSN 6320-01-659-2819
NSN 5915-00-909-9522