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 5855-01-154-3871
NSN 5990-01-411-5930
NSN 6135-01-461-6521
NSN 5975-01-029-1871
NSN 5990-01-492-4837
NSN 6610-01-140-1023
NSN 5985-01-027-0777
NSN 6645-01-547-3224
NSN 5950-01-454-7677
NSN 5990-00-202-5127
NSN 5985-01-159-2159
NSN 5945-00-221-6529