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 6135-01-633-8502
NSN 5935-00-452-0616
NSN 6110-01-411-6608
NSN 5999-01-180-9754
NSN 5998-00-754-8666
NSN 5930-01-551-1123
NSN 5895-01-420-2585
NSN 6620-01-265-2887
NSN 6220-01-439-6283
NSN 5925-01-494-9067
NSN 5975-01-258-9289
NSN 6685-01-166-6593