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 4140-01-216-3417
NSN 5998-01-083-7101
NSN 6645-01-180-6219
NSN 2925-00-231-8041
NSN 5910-00-294-0956
NSN 5990-00-936-3947
NSN 6130-00-387-2051
NSN 5960-00-195-4448
NSN 5965-01-335-6630
NSN 2925-01-111-2927
NSN 5920-00-853-4893
NSN 6150-00-489-9551