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 6650-01-435-2994
NSN 5835-00-198-4936
NSN 6320-01-239-1240
NSN 5960-00-489-2805
NSN 6320-01-129-9656
NSN 5965-01-256-0059
NSN 4140-00-836-0680
NSN 5990-00-518-0684
NSN 7035-00-981-7216
NSN 5965-00-238-9870
NSN 6645-01-275-2683
NSN 6145-00-880-8720