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 5990-01-162-9220
NSN 5990-00-160-1176
NSN 5996-00-045-4058
NSN 5990-01-386-5561
NSN 6150-01-216-4151
NSN 5930-01-400-6126
NSN 5935-01-442-9074
NSN 6610-01-097-4498
NSN 5935-01-273-4125
NSN 6685-01-458-3106
NSN 6685-01-120-2072
NSN 6610-01-442-3509