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 5950-01-616-1925
NSN 6645-00-586-7198
NSN 5950-01-471-5228
NSN 5985-01-545-3638
NSN 6645-01-417-1913
NSN 5985-01-542-9490
NSN 6130-01-561-8969
NSN 6620-01-571-7727
NSN 6685-01-111-3120
NSN 6135-00-488-4478
NSN 6320-01-495-6893
NSN 6130-01-431-8349