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 5910-00-543-1958
NSN 5960-00-724-5787
NSN 5855-01-378-9048
NSN 5925-00-795-4958
NSN 6240-01-226-8866
NSN 5960-01-412-0619
NSN 6650-01-452-1167
NSN 6130-01-127-5234
NSN 5905-00-113-3613
NSN 5835-01-495-0595
NSN 6145-00-269-4271
NSN 6135-01-104-3790