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 5935-01-168-8183
NSN 5965-01-176-3227
NSN 6685-01-552-7857
NSN 5930-01-043-7897
NSN 6105-01-277-5906
NSN 6130-01-300-0657
NSN 6610-00-263-3076
NSN 5996-01-430-2440
NSN 6150-00-763-7220
NSN 6320-01-227-2648
NSN 6320-01-441-2438
NSN 5975-01-619-0108