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 5945-01-176-7108
NSN 6145-01-442-6965
NSN 6145-00-773-2026
NSN 6620-01-236-0138
NSN 6105-01-470-4090
NSN 6650-00-518-5194
NSN 6130-01-127-5738
NSN 2925-01-055-9705
NSN 5985-01-332-9732
NSN 6130-01-521-4461
NSN 6130-01-508-3924
NSN 6150-00-580-0511