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 6110-00-141-1966
NSN 2925-01-633-4048
NSN 6650-01-281-4651
NSN 6135-01-599-4006
NSN 5925-00-883-0094
NSN 6220-00-220-5343
NSN 6220-01-359-4857
NSN 5985-01-418-6352
NSN 6685-01-096-2555
NSN 6645-00-041-4074
NSN 6135-01-651-3210
NSN 5895-01-509-8417