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 5975-01-274-0322
NSN 5935-01-584-6950
NSN 6220-00-760-5780
NSN 5990-01-630-4308
NSN 7035-01-630-5271
NSN 5905-01-453-0375
NSN 5910-01-249-1301
NSN 5905-01-578-8150
NSN 6610-00-518-4919
NSN 5996-01-421-4761
NSN 6685-00-841-5158
NSN 5975-01-381-2763