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 6620-01-577-6285
NSN 5915-00-636-9785
NSN 5910-01-105-8495
NSN 5925-01-140-9018
NSN 6135-01-400-2947
NSN 6110-01-167-8906
NSN 5905-00-740-2393
NSN 4140-01-556-7940
NSN 4140-00-269-5795
NSN 6620-01-354-8472
NSN 6645-01-252-8870
NSN 5950-00-556-9141