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 6620-01-462-1625
NSN 5985-01-188-7794
NSN 5985-01-444-2713
NSN 6135-00-078-9931
NSN 6650-01-187-5937
NSN 5950-01-377-1422
NSN 5999-01-397-4757
NSN 5905-00-803-2302
NSN 6645-01-180-6219
NSN 6645-01-179-0243
NSN 5895-01-519-4012
NSN 7035-00-008-1809