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 5965-00-973-9974
NSN 2925-01-436-7325
NSN 6135-00-803-3012
NSN 5985-01-047-0893
NSN 6685-01-391-6790
NSN 6130-01-597-2169
NSN 6135-01-629-0198
NSN 5945-01-067-0799
NSN 5905-01-013-9558
NSN 6320-01-607-1491
NSN 6645-01-143-0137
NSN 5905-01-152-2580