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 6650-01-630-2223
NSN 6150-00-241-2184
NSN 7035-01-183-7550
NSN 5910-01-627-4222
NSN 6685-00-997-5889
NSN 6645-01-312-8601
NSN 6150-01-218-6019
NSN 6645-01-315-9238
NSN 5935-01-579-1252
NSN 6105-00-353-8153
NSN 5985-01-109-0655
NSN 5990-01-316-9477