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 5895-01-315-4082
NSN 6320-00-456-2092
NSN 5910-01-274-8958
NSN 6610-00-169-4195
NSN 6685-01-026-0111
NSN 6110-01-550-5858
NSN 6610-00-905-6780
NSN 6135-00-708-0892
NSN 6145-00-909-0614
NSN 5835-01-560-3486
NSN 2925-00-862-8550
NSN 4140-01-359-5302