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 5910-01-101-1670
NSN 5998-00-452-9640
NSN 5975-01-448-2818
NSN 5905-01-580-2368
NSN 5975-01-142-2799
NSN 6610-00-753-2281
NSN 5915-01-347-6690
NSN 5950-01-148-2295
NSN 6240-01-094-2280
NSN 6240-01-426-5581
NSN 5930-00-026-1665
NSN 7035-00-507-5380