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 5990-00-965-9611
NSN 6685-01-012-1557
NSN 6105-01-481-3763
NSN 6610-01-440-4314
NSN 5930-00-577-8721
NSN 5998-00-152-9458
NSN 5975-01-499-9949
NSN 5925-00-848-9073
NSN 6220-00-835-9053
NSN 4140-01-270-6599
NSN 5960-01-564-5044
NSN 5960-00-519-6306