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 5985-01-188-3875
NSN 6685-01-559-8861
NSN 5985-01-042-5729
NSN 7035-01-250-5744
NSN 5835-01-167-1824
NSN 5996-01-471-0761
NSN 5999-00-101-7672
NSN 2925-00-513-6644
NSN 5930-01-361-9027
NSN 6150-01-072-6694
NSN 5835-01-205-6614
NSN 5835-00-624-1548