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 5990-00-932-3070
NSN 5985-01-239-8935
NSN 5985-01-229-7327
NSN 2925-01-607-7754
NSN 5920-00-541-1119
NSN 6320-00-433-2773
NSN 5925-00-633-6236
NSN 6150-01-373-7354
NSN 6110-00-923-7265
NSN 6620-01-503-2667
NSN 5915-01-366-0031
NSN 5998-00-269-5095