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 5905-00-729-4188
NSN 5990-01-463-5400
NSN 5985-01-391-7458
NSN 5990-00-016-5648
NSN 6110-00-811-2882
NSN 5920-00-722-2015
NSN 2925-01-105-7850
NSN 5835-00-695-9543
NSN 5895-01-204-8213
NSN 2925-00-453-4100
NSN 5925-01-056-5127
NSN 5945-01-655-3797