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 6105-01-190-5507
NSN 6645-01-415-6093
NSN 5950-01-575-2133
NSN 6130-00-246-6915
NSN 7035-00-392-5417
NSN 5945-00-185-4815
NSN 6645-01-500-0827
NSN 5905-01-087-4823
NSN 5996-00-264-0710
NSN 5990-01-100-7231
NSN 5915-01-391-4664
NSN 6150-01-411-6740