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 5985-01-211-1591
NSN 2925-01-554-5246
NSN 6685-00-866-7182
NSN 6650-00-443-1000
NSN 6220-00-707-5044
NSN 5945-00-975-9828
NSN 6135-01-478-9316
NSN 5835-01-168-5167
NSN 6220-00-349-6064
NSN 6645-01-038-6978
NSN 5855-00-962-5792
NSN 7035-01-283-2536