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 5965-01-128-4381
NSN 5960-01-386-9611
NSN 5985-01-614-7070
NSN 6130-00-223-2099
NSN 5985-00-225-5744
NSN 6645-00-470-5310
NSN 5930-01-351-3684
NSN 5960-01-038-8487
NSN 6150-01-449-1339
NSN 6685-01-398-9807
NSN 5998-01-346-7803
NSN 5910-00-265-5797