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 5835-01-085-5487
NSN 5975-01-158-7185
NSN 6145-01-180-1597
NSN 5945-01-535-6125
NSN 5920-00-892-2640
NSN 5920-01-431-5791
NSN 6610-01-005-5832
NSN 5930-01-499-8531
NSN 5965-01-237-3342
NSN 5910-01-039-3068
NSN 6620-00-770-9794
NSN 5920-00-575-8826