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 6130-01-578-2370
NSN 5925-00-001-5977
NSN 5965-01-610-5410
NSN 5905-01-311-0574
NSN 6610-00-925-0935
NSN 5925-01-026-0891
NSN 6135-01-616-5983
NSN 5965-00-679-9501
NSN 4140-01-605-7280
NSN 5835-00-510-0890
NSN 6645-01-363-5944
NSN 6685-01-055-0919