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 5999-00-626-9947
NSN 5985-00-082-1317
NSN 5975-01-568-2158
NSN 5835-00-217-2147
NSN 6610-00-495-4918
NSN 5910-01-415-1599
NSN 6685-01-346-4752
NSN 6220-01-429-8534
NSN 5925-00-283-8139
NSN 6650-01-453-2382
NSN 5965-01-625-2426
NSN 5895-01-486-0162