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 6135-01-088-4301
NSN 5985-01-557-5371
NSN 6620-01-329-0845
NSN 5999-01-316-5930
NSN 5895-00-131-0203
NSN 5855-01-400-1590
NSN 5925-01-227-6859
NSN 6145-01-450-0508
NSN 5965-01-327-9234
NSN 5965-00-194-9428
NSN 4140-01-009-5859
NSN 5915-00-645-3453