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 5950-00-350-1372
NSN 5925-01-298-8120
NSN 5905-00-797-3775
NSN 6240-01-467-8474
NSN 5905-01-343-5331
NSN 6145-01-153-7197
NSN 5930-01-093-2853
NSN 7035-01-169-6551
NSN 5996-00-074-4124
NSN 4140-01-250-1128
NSN 5990-00-269-2226
NSN 5998-01-215-1313