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 6135-00-299-6918
NSN 6220-01-123-9290
NSN 5985-01-585-1312
NSN 5996-00-879-4654
NSN 5965-00-284-6718
NSN 5990-01-525-2250
NSN 6240-00-643-4532
NSN 6130-01-634-0603
NSN 5855-00-138-2386
NSN 6610-01-168-6943
NSN 5960-00-581-8342
NSN 5895-01-463-1521