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 5999-01-023-1633
NSN 6240-01-382-3756
NSN 5960-01-237-0662
NSN 4140-01-421-3187
NSN 4140-01-473-7863
NSN 6130-01-212-9912
NSN 5975-00-973-1324
NSN 6645-00-411-3733
NSN 5998-00-759-0911
NSN 6105-01-345-0524
NSN 5999-01-134-3699
NSN 6685-01-026-3066