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 6220-00-846-0140
NSN 6135-01-368-0960
NSN 5999-00-279-1580
NSN 5925-01-618-7153
NSN 6110-01-352-8631
NSN 5999-01-269-4646
NSN 5996-00-111-3379
NSN 6110-01-338-0599
NSN 6685-01-030-0557
NSN 5935-00-078-9992
NSN 6620-01-633-8443
NSN 6105-01-532-4441