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 5965-01-388-0565
NSN 6150-01-100-3413
NSN 5985-01-025-9711
NSN 5835-00-215-3769
NSN 6650-01-157-1667
NSN 5975-01-473-7811
NSN 6320-00-098-2858
NSN 5990-01-374-1994
NSN 5925-00-834-0272
NSN 6320-01-054-3046
NSN 2925-00-877-4307
NSN 6620-01-007-8368