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 6240-00-633-1243
NSN 4140-00-445-3944
NSN 5910-00-400-4501
NSN 5965-00-734-5053
NSN 6610-01-567-7242
NSN 6240-01-529-6624
NSN 5965-01-618-6288
NSN 5990-00-518-3195
NSN 5910-00-160-6758
NSN 5985-01-460-1136
NSN 5950-00-256-7593
NSN 5950-01-274-4183