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 5905-01-108-5889
NSN 5996-00-605-3009
NSN 6645-01-445-5235
NSN 5835-01-474-1224
NSN 6620-01-600-7483
NSN 6610-00-397-7678
NSN 6145-00-184-1110
NSN 5920-01-270-7795
NSN 5855-00-411-7480
NSN 6620-00-613-3023
NSN 6130-01-373-1911
NSN 5915-00-960-4786