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 5985-00-012-0286
NSN 5985-01-215-2210
NSN 7035-01-179-1739
NSN 5915-01-261-7839
NSN 5895-00-515-6368
NSN 4140-01-118-6848
NSN 6645-01-156-6741
NSN 5950-01-541-4659
NSN 6685-01-031-5255
NSN 5905-01-383-6811
NSN 7035-01-271-1643
NSN 2925-01-141-7563