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 6135-01-260-7180
NSN 6240-01-655-0926
NSN 6645-00-847-3727
NSN 6220-01-213-1558
NSN 5965-01-281-3895
NSN 5835-00-503-2608
NSN 7035-01-028-4966
NSN 5990-00-351-5479
NSN 5960-01-439-9517
NSN 4140-00-078-9357
NSN 5965-00-408-5501
NSN 5999-00-898-4590