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 5985-01-414-1396
NSN 5835-01-576-9013
NSN 2925-01-265-2853
NSN 5965-01-204-8505
NSN 7035-01-026-0117
NSN 6645-00-256-4072
NSN 6135-01-400-2947
NSN 6240-01-575-4089
NSN 6130-01-431-5796
NSN 5915-00-935-4984
NSN 5960-01-570-8605
NSN 6320-01-271-0247