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 6685-00-555-4198
NSN 5910-01-202-2689
NSN 6110-01-430-8890
NSN 5965-01-364-1232
NSN 7035-00-096-9986
NSN 6645-01-076-4655
NSN 7035-01-633-9537
NSN 5935-00-802-5608
NSN 6610-01-182-9828
NSN 6320-01-185-3857
NSN 5905-01-146-4352
NSN 5965-00-322-9933