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 5945-01-270-4063
NSN 4140-01-177-6238
NSN 6685-01-461-1617
NSN 6240-01-534-4007
NSN 5915-01-065-1127
NSN 6650-01-280-8456
NSN 6105-01-367-6005
NSN 5905-01-459-8025
NSN 2925-00-258-9786
NSN 6145-01-391-6199
NSN 5905-01-514-1507
NSN 5835-01-506-0746