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 6650-01-066-0420
NSN 6650-01-626-5370
NSN 5915-01-348-6612
NSN 5960-00-104-5955
NSN 5920-01-242-8064
NSN 5915-00-975-9917
NSN 5925-00-226-1155
NSN 6130-01-248-2818
NSN 6135-00-546-6273
NSN 5985-01-218-0589
NSN 6150-01-602-2834
NSN 5905-01-165-8605