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 5945-00-068-2171
NSN 5915-01-137-8032
NSN 5930-01-655-8408
NSN 5996-01-320-7455
NSN 5950-01-406-6648
NSN 5925-01-410-8515
NSN 5910-01-280-6429
NSN 6610-01-543-3753
NSN 6685-00-183-7811
NSN 2925-00-480-9068
NSN 5950-01-433-1116
NSN 5996-01-459-3036