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 6645-01-312-3558
NSN 5950-01-364-1094
NSN 5920-00-522-6525
NSN 5920-00-060-3290
NSN 2925-01-346-9522
NSN 6135-01-575-8362
NSN 6110-00-127-9957
NSN 5835-00-707-6266
NSN 5935-01-580-6142
NSN 6685-00-149-1417
NSN 4140-00-269-5795
NSN 5835-01-442-6482