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 5965-01-388-1379
NSN 6620-00-248-9513
NSN 5925-01-555-7565
NSN 5855-00-997-6225
NSN 5895-01-160-8101
NSN 6130-00-297-5793
NSN 5930-00-338-9417
NSN 6320-00-857-4073
NSN 6150-01-461-3217
NSN 5930-00-277-4704
NSN 5945-01-343-3761
NSN 5990-01-247-7411