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 5930-01-542-3846
NSN 5930-01-508-3537
NSN 5975-01-148-1967
NSN 5996-01-005-9968
NSN 5925-01-043-0608
NSN 5910-01-572-9036
NSN 5895-01-516-1973
NSN 5855-00-832-9341
NSN 5905-00-626-3506
NSN 6145-00-797-3454
NSN 6645-01-414-8806
NSN 6610-01-027-1641