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 6145-01-162-0088
NSN 6240-00-275-1950
NSN 5920-00-799-8851
NSN 5925-01-629-2802
NSN 6620-01-218-6147
NSN 5910-01-486-4916
NSN 4140-01-516-0129
NSN 6110-01-217-1007
NSN 6130-00-686-4906
NSN 6110-01-530-5427
NSN 6650-01-067-8946
NSN 5935-00-936-9019