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 5950-01-480-2151
NSN 5990-00-412-4411
NSN 5920-01-528-4835
NSN 2925-00-284-1534
NSN 5935-01-134-4115
NSN 6620-01-504-5756
NSN 5910-00-778-8424
NSN 6130-00-402-0559
NSN 5975-01-429-8609
NSN 5996-01-157-7728
NSN 6685-00-554-3825
NSN 5965-01-493-5534