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 7035-01-595-5270
NSN 7035-01-398-9581
NSN 6685-00-725-7506
NSN 5935-01-179-4151
NSN 5855-01-247-0012
NSN 6150-00-347-9341
NSN 6320-00-450-7014
NSN 6650-01-144-8436
NSN 6650-01-367-4989
NSN 5905-01-464-9183
NSN 6645-01-335-9183
NSN 6150-01-502-7545