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 6130-01-324-7004
NSN 2925-01-482-8036
NSN 5965-01-469-2504
NSN 5855-01-552-4759
NSN 5975-01-459-9483
NSN 6610-00-226-4710
NSN 6110-01-194-8318
NSN 5975-00-189-0093
NSN 4140-01-378-4046
NSN 6110-00-596-9124
NSN 5930-00-275-2136
NSN 7035-01-374-0005