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 2925-00-446-6453
NSN 6135-00-835-7211
NSN 6110-01-232-1129
NSN 5855-01-119-9575
NSN 6105-01-197-8685
NSN 5925-00-194-9146
NSN 6645-00-004-8628
NSN 6685-01-094-5644
NSN 5999-00-059-7573
NSN 5910-01-485-9537
NSN 4140-00-998-2911
NSN 5965-01-318-8138