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 5930-00-057-0398
NSN 5910-01-618-6407
NSN 6150-00-596-9882
NSN 6105-01-604-3435
NSN 5925-01-088-6863
NSN 5855-01-329-6087
NSN 5930-01-427-3676
NSN 6650-01-247-6623
NSN 6150-01-332-8129
NSN 5925-00-926-0863
NSN 5996-00-237-5146
NSN 5855-00-256-5562