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 5996-01-106-2763
NSN 6110-00-144-6763
NSN 6220-01-381-1793
NSN 5915-00-156-6892
NSN 5950-00-539-9877
NSN 5915-01-323-1481
NSN 6150-00-467-2541
NSN 2925-00-494-5537
NSN 5996-01-088-6685
NSN 5996-01-034-2270
NSN 7035-01-337-8128
NSN 7035-01-611-2610