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 spark-ignition or compression-ignition internal combustion piston engines for use in aircraft except civil
NSN 5855-01-020-7982
NSN 5930-01-014-7143
NSN 5920-01-437-5196
NSN 5920-00-636-4713
NSN 6110-00-403-9530
NSN 5965-00-196-7320
NSN 6110-01-633-9660
NSN 6130-01-197-7397
NSN 4140-01-191-6457
NSN 5945-00-067-3770
NSN 6220-00-070-9986
NSN 5895-01-266-7071