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 6130-01-270-9756
NSN 5999-01-471-7265
NSN 5965-01-012-1065
NSN 6650-00-056-1581
NSN 5985-01-502-0051
NSN 6240-01-098-4294
NSN 5950-00-278-1201
NSN 5930-01-656-3367
NSN 6220-00-973-9416
NSN 5996-01-481-9626
NSN 6650-01-184-9238
NSN 5905-00-521-4757