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 6135-01-652-9622
NSN 6610-01-230-9971
NSN 6645-01-291-6732
NSN 5965-00-499-8229
NSN 5895-00-952-7024
NSN 5855-01-286-9928
NSN 5960-01-381-2478
NSN 5930-00-101-2779
NSN 5985-00-529-0093
NSN 5925-00-878-4077
NSN 4140-01-206-2397
NSN 5930-00-518-1642