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 5835-01-171-5368
NSN 5996-01-064-6969
NSN 6105-01-234-6611
NSN 6645-01-012-7670
NSN 6110-00-482-3372
NSN 6135-01-604-8739
NSN 5835-01-432-1277
NSN 5990-01-449-7090
NSN 5950-01-485-6838
NSN 5960-01-172-9724
NSN 7035-00-349-8571
NSN 6650-01-041-3479