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 5985-01-174-5256
NSN 6645-00-467-6094
NSN 5985-01-274-9549
NSN 5990-00-145-1187
NSN 6645-01-556-5263
NSN 5915-01-265-3960
NSN 5915-00-965-0535
NSN 6685-00-042-5073
NSN 5990-00-470-2535
NSN 2925-01-599-1901
NSN 4140-01-020-4224
NSN 6620-01-030-6495