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 6105-01-353-4981
NSN 6685-01-232-1134
NSN 2925-01-480-1208
NSN 5905-01-626-1488
NSN 6320-01-412-2973
NSN 6610-00-915-3215
NSN 4140-01-376-5877
NSN 6650-00-187-5388
NSN 5915-01-378-2621
NSN 5990-01-546-1649
NSN 5996-01-442-5218
NSN 6620-00-257-2783