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 6685-00-641-0189
NSN 5996-01-442-0832
NSN 6645-01-346-4505
NSN 5915-01-142-2018
NSN 5925-01-587-9356
NSN 5975-00-280-3357
NSN 6135-00-812-9039
NSN 5990-01-655-1437
NSN 5935-01-429-8569
NSN 5905-00-339-2015
NSN 5895-01-417-4600
NSN 6135-01-543-1263