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 6320-01-113-7647
NSN 5855-01-027-1571
NSN 6130-01-188-7411
NSN 5965-01-342-2865
NSN 5910-01-216-0882
NSN 5960-01-439-9517
NSN 5996-00-450-3136
NSN 5965-00-173-4440
NSN 5965-01-624-2157
NSN 5965-01-170-9891
NSN 5985-01-092-5936
NSN 6150-01-357-4290