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 5910-00-926-0005
NSN 6620-01-367-2597
NSN 6320-00-270-8222
NSN 6620-01-281-6386
NSN 5925-00-837-7944
NSN 5935-01-599-6623
NSN 5930-00-087-0851
NSN 5950-01-447-8136
NSN 7035-00-541-8516
NSN 5985-01-064-7201
NSN 5905-00-652-3380
NSN 5945-01-659-7937