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 7035-01-056-5350
NSN 5960-01-127-5425
NSN 5920-00-332-8384
NSN 5895-01-135-9853
NSN 6610-01-461-5393
NSN 5920-00-175-7987
NSN 6650-01-059-1008
NSN 5960-01-340-4487
NSN 6110-01-559-5445
NSN 5855-01-100-3272
NSN 5999-01-591-1275
NSN 5905-01-044-6469