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 5935-01-491-5742
NSN 5910-00-952-2996
NSN 6130-01-209-9067
NSN 6220-01-120-2325
NSN 5975-01-367-7057
NSN 6240-01-537-2246
NSN 6145-01-352-4471
NSN 4140-00-152-1258
NSN 6610-01-573-5949
NSN 7035-01-340-3272
NSN 6685-01-330-7330
NSN 6105-00-191-5055